IQ plus® 355 - Cisco-Eagle, Inc.

IQ plus® 

355 

Digital Weight Indicator 

Version 1.1 

Installation Manual 

66503

Technical training seminars are available through Rice Lake Weighing Systems. 

Course descriptions and dates can be viewed at www.rlws.com or obtained by 

calling 715-234-9171 and asking for the training department. 

Copyright © 2002 Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America. 

Specifications subject to change without notice. 

Version 1.1, October 2002 

Contents 

About This Manual ................................................................................................................................... 1 

1.0 Introduction.................................................................................................................................. 1 

1.1 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 

1.2 Front Panel Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 

1.3 LED Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 

1.4 Indicator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.1 Toggle Gross/Net Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.2 Toggle Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.3 Zero Scale . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.4 Acquire Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.5 Remove Stored Tare Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

1.4.6 Print Ticket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 

2.0 Installation ................................................................................................................................... 4 

2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 

2.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 

2.3 Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 

2.3.1 Cable Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 

2.3.2 Load Cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 

2.3.3 Serial Communications and Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 

2.3.4 Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 

2.4 Analog Output Module Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 

2.5 Enclosure Reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 

2.6 Board Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 

2.7 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 

3.0 Configuration.............................................................................................................................. 12 

3.1 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 

3.1.1 Revolution Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 

3.1.2 EDP Command Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 

3.1.3 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 

3.2 Menu Structures and Parameter Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 

3.2.1 Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 

3.2.2 Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 

3.2.3 Calibration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 

3.2.4 Serial Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 

3.2.5 Program Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 

3.2.6 Print Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 

3.2.7 Digital Input Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 

3.2.8 Analog Output Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 

3.2.9 Version Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 

4.0 Calibration.................................................................................................................................. 24 

4.1 Front Panel Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 

4.2 EDP Command Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 

4.3 Revolution 

Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 

4.4 More About Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

ii 

4.4.1 Adjusting Final Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 

4.4.2 Zero Deadload A/D Counts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 

4.4.3 Calculating the Span Coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 

5.0 EDP Commands.......................................................................................................................... 27 

5.1 The EDP Command Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 

5.1.1 Key Press Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 

5.1.2 Reporting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 

5.1.3 The RESETCONFIGURATION Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 

5.1.4 Parameter Setting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 

5.1.5 Normal Mode Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 

5.2 Saving and Transferring Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 

5.2.1 Saving Indicator Data to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 

5.2.2 Downloading Configuration Data from PC to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 

6.0 Print Formatting ......................................................................................................................... 32 

6.1 Print Formatting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 

6.2 Customizing Print Formats. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 

6.2.1 Using the EDP Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 

6.2.2 Using the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 

6.2.3 Using Revolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 

7.0 Appendix .................................................................................................................................... 34 

7.1 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 

7.1.1 Displayed Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 

7.1.2 Using the XE EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 

7.2 Status Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 

7.2.1 Using the P EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 

7.2.2 Using the ZZ EDP Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 

7.3 Continuous Output (Stream) Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 

7.4 ASCII Character Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 

7.5 Front Panel Display Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 

7.6 Conversion Factors for Secondary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 

7.7 Digital Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 

7.7.1 DIGFLx 

Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 

7.7.2 DFSENS and DFTHRH Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41 

7.7.3 Setting the Digital Filter Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 

7.8 Analog Output Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 

7.9 Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 

7.10 Software Revision History. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 

7.11 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 

IQ plus 355 Limited Warranty ................................................................................................................ 46 

IQ plus 355 Installation Manual

About This Manual 

This manual is intended for use by service technicians 

responsible for installing and servicing IQ plus® 

355 

digital weight indicators. This manual applies to 

indicators using Version 1.1 of the IQ plus 355 

software. See Section 7.10 on page 44 for a summary 

of software changes included in this release. 

Configuration and calibration of the indicator can be 

accomplished using the indicator front panel keys, the 

EDP command set, or Version 2.5 or later of the 

Revolution 

configuration utility. See Section 3.1 on 

page 12 for information about configuration methods. 

1.0 Introduction 

The IQ plus 355 is a single-channel digital weight 

indicator housed in a NEMA 4X/IP66-rated stainless 

steel enclosure. The indicator front panel consists of a 

large (.8 in, 20 mm), six-digit, seven-segment LED 

display and five-button keypad. Features include: 

• Drives up to eight 350Ω 

or sixteen 700Ω 

load 

cells 

• Supports 4- and 6-wire load cell connections 

• Two configurable digital inputs 

• Electronic data processing (EDP) port for full 

duplex, RS-232 communications at up to 

9600 bps 

• Printer port for output-only RS-232 and 20 

mA current loop communications at up to 

9600 bps 

• Optional analog output module provides 0–10 

VDC or 4–20 mA tracking of gross or net 

weight values 

• Available in 115 VAC and 230 VAC versions 

The IQ plus 355 is NTEP-certified and Measurement 

Canada approved for Classes III, III HD, and III L at 

10,000 divisions. See Section 7.11 on page 45 for 

detailed specifications. 

Some procedures described in this 

Warning 

manual require work inside the 

indicator enclosure. These procedures 

are to be performed by qualified 

service personnel only. 

Authorized distributors and their employees 

can view or download this manual from the 

Rice Lake Weighing Systems distributor 

site at www.rlws.com. 

The Operator Card included with this manual 

provides basic operating instructions for users of the 

IQ plus 355. Please leave the Operator Card with the 

indicator when installation and configuration are 

complete. 

1.1 Operating Modes 

The IQ plus 355 has three modes of operation: 

Normal (weighing) mode 

Normal mode is the “production” mode of the 

indicator. The indicator displays gross or net 

weights as required, using the LED annunciators 

described in Section 1.3 on page 2 to indicate 

scale status and the type of weight value 

displayed. Once configuration is complete and a 

legal seal is affixed to the back of the indicator, 

this is the only mode in which the IQ plus 355 can 

operate. 

Setup mode 

Most of the procedures described in this manual 

require the indicator to be in setup mode, 

including configuration and calibration. 

To enter setup mode, remove the large fillister 

head screw from the enclosure backplate. Insert a 

screwdriver or a similar tool into the access hole 

and press the setup switch once. The indicator 

display changes to show the word CONFIG. 

Test mode 

Test mode provides a number of diagnostic 

functions for the IQ plus 355 indicator. Like setup 

mode, test mode is entered using the setup switch. 

See Section 7.9 on page 43 for more information 

about entering and using test mode. 

Introduction 

1

1.2 Front Panel Keypad 

Figure 1-1 on page 2 shows the IQ plus 355 LED annunciators, keypad, and normal mode key functions. 

The symbols shown under the keys (representing up, down, enter, left, right) describe the key functions assigned 

in setup mode. In setup mode, the keys are used to navigate through menus, select digits within numeric values, 

and increment/decrement values. See Section 3.1.3 on page 13 for information about using the front panel keys 

in setup mode. 

2 

Gross 

Net 

Set gross weight 

to zero 

Figure 1-1. IQ plus 355 Front Panel, Showing LED Annunciators and Normal Mode Key Functions 

1.3 LED Annunciators 

The IQ plus 355 display uses a set of eight LED annunciators to provide additional information about the value 

being displayed: 

• Gross and Net annunciators are lit to show whether the displayed weight is a gross or net weight. 

• Center of zero ( 

scale is zeroed. 

): Gross weight is within 0.25 graduations of zero. This annunciator lights when the 

• Standstill ( ): Scale is at standstill or within the specified motion band. Some operations, including 

• 

tare functions and printing, can only be done when the standstill symbol is shown. 

lb, kg, oz, and g annunciators indicate the units associated with the displayed value: lb=pounds, 

kg=kilograms, oz=ounces, g=grams. 

The displayed units can also be set to short tons (tn), metric tons (t), or NONE (no units information 

displayed). The lb and kg LEDs function as primary and secondary units annunciators for some 

combinations of primary and secondary units. If neither primary nor secondary units are lb, kg, oz, or g, the 

lb annunciator is lit for primary units, kg for secondary units. 

IQ plus 355 Installation Manual 

D I G I T A L W E I G H T I N D I C A T O R 

ZERO GROSS TARE UNITS PRINT 

NET 

B/N T 

Units 

Switch between 

gross and net 

weight display 

Acquire tare 

Switch between 

primary and 

secondary units 

NORMAL MODE KEY FUNCTIONS 

Send data to 

serial port 

lb 

kg 

oz 

g

Table 1-1 shows which annunciators are used for all combinations of configured primary and secondary units. 

For example: 

• If the primary unit is pounds (lb) and the secondary unit is kilograms (kg), the lb LED is lit for primary 

units, kg for secondary units. 

• If the primary unit is pounds (lb) and the secondary unit is short tons (tn), the lb LED is lit for primary 

units, kg for secondary units. There is no LED for short tons, so the kg LED is used as the secondary 

units annunciator. 

• If the primary unit is short tons (tn) and the secondary unit is pounds (lb), the lb LED is lit for primary 

units (tn), and kg is lit for secondary units (lb). Because there is no LED for short tons, the lb and kg 

LEDs are used as primary and secondary units annunciators. 

See Section 3.2.2 for more information about configuring primary and secondary display units. 

Primary Unit 

1.4 Indicator Operations 

Basic IQ plus 355 operations are summarized below. 

1.4.1 Toggle Gross/Net Mode 

Press the GROSS/NET key to switch the display mode 

from gross to net, or from net to gross. If a tare value 

has been entered or acquired, the net value is the gross 

weight minus the tare. 

Gross mode is shown by the Gross annunciator; net 

mode is shown by the Net annunciator. 

1.4.2 Toggle Units 

Press the UNITS key to switch between primary and 

secondary units. The units LED to the right of the 

display is lit. 

1.4.3 Zero Scale 

1. In gross mode, remove all weight from the 

scale and wait for the standstill annunciator 

( ). 

2. Press the ZERO key. The center of zero 

( ) annunciator lights to indicate the 

scale is zeroed. 

Secondary Unit 

lb kg oz g tn t none 

lb lb / lb lb / kg lb / oz lb / g lb / kg 

kg kg / lb kg / kg kg / oz kg / g lb / kg 

oz oz / lb oz / kg oz / oz oz / g oz / kg 

g g / lb g / kg g / oz g / g g / kg 

tn lb / kg lb / kg lb / oz lb / g lb / lb lb / kg lb / kg 

t lb / kg lb / lb lb / kg 

none lb / kg lb / kg lb / lb 

Table 1-1. Units Annunciators, Showing Primary / Secondary LEDs Used for All Configurations 

1.4.4 Acquire Tare 

1. Place container on scale and wait for the 

standstill annunciator ( ). 

2. Press the TARE key to acquire the tare weight 

of the container. The indicator switches to net 

mode. 

1.4.5 Remove Stored Tare Value 

1. Remove all weight from the scale and wait for 

the standstill annunciator ( ). 

2. Press the TARE key. The indicator switches to 

gross mode, indicating the tare value has been 

removed. 

1.4.6 Print Ticket 

1. Wait for the standstill annunciator ( ). 

2. Press the PRINT key to send data to the serial 

port. 

Introduction 

3

2.0 Installation 

This section describes procedures for connecting load 

cells, digital inputs, and serial communications cables 

to the IQ plus 355 indicator. Instructions for field 

installation of the analog output option and 

replacement of the CPU board are included, along 

with assembly drawings and parts lists for the service 

technician. 

4 

Caution 

• Use a wrist strap to ground yourself and protect 

components from electrostatic discharge (ESD) 

when working inside the indicator enclosure. 

• This unit uses double pole/neutral fusing which 

could create an electric shock hazard. Procedures 

requiring work inside the indicator must be 

performed by qualified service personnel only. 

• The supply cord serves as the power disconnect for 

the IQ plus 355. The power outlet supplying the 

indicator must be installed near the unit and be 

easily accessible 

2.1 Unpacking and Assembly 

Immediately after unpacking, visually inspect the IQ 

plus 355 to ensure all components are included and 

undamaged. The shipping carton should contain the 

indicator with attached tilt stand, this manual, and a 

parts kit. If any parts were damaged in shipment, 

notify Rice Lake Weighing Systems and the shipper 

immediately. 

The parts kit contains the items listed below: 

• Capacity, identification, and annunciator 

labels. Annunciator labels (PN 53374) 

provide replacement overlay decals for 

labeling primary and secondary units LEDs. 

• 6-position screw terminal (PN 70599) for 

connector J1 and a 7-position screw terminal 

(PN 70600) for connector J4 (see Figure 2-3 

on page 5). 

• Two 8-32NC x 7/16 fillister head screws (PN 

30623). These screws occupy the holes below 

and on either side of the setup screw on the 

indicator backplate (see Figure 2-4 on page 

7). 

• Four 8-32NC x 3/8 machine screws (PN 

14862) for the indicator backplate (see #24 in 

Figure 2-5 on page 9). 

• Six neoprene washers (PN 45042) for 

backplate screws included in the parts kit. 

• Four rubber bumpers (“feet”) for the tilt stand, 

PN 42149. 

• Five cable ties, PN 15631. 

• Two ferrites (PN 66730), used to reduce 

susceptibility to radiate electromagnet 

IQ plus 355 Installation Manual 

interference and EMI installation instructions 

(PN 67970). 

• Three each of grounding clamps (PN 67550), 

external tooth lock washers (PN 15133), and 

kep nuts (PN 14676) for cable shield 

grounding against the backplate. 

2.2 Enclosure Disassembly 

The indicator enclosure must be opened to connect 

cables for load cells, communications, digital inputs, 

and analog output. 

Warning 

The IQ plus 355 has no on/off switch. 

Before opening the unit, ensure the 

power cord is disconnected from the 

power outlet. 

Ensure power to the indicator is disconnected, then 

place the indicator face-down on an antistatic work 

mat. Remove the screws that hold the backplate to the 

enclosure body, then lift the backplate away from the 

enclosure and set it aside. 

2.3 Cable Connections 

The IQ plus 355 provides four cord grips for cabling 

into the indicator: one for the power cord, three to 

accommodate load cell, communications, digital 

inputs, and analog output cables. Two of the three free 

cord grips come with a plug installed to prevent 

moisture from entering the enclosure. Depending on 

your application, remove the plug from any cord grip 

that will be used and install cables as required. 

NOTE: Because the IQ plus 355 has no on/off switch, 

the power cord serves as the power disconnect. The 

power outlet must be located close enough to the 

indicator to allow the operator to easily disconnect 

power to the unit. 

Figure 2-1 shows the recommended assignments for 

the IQ plus 355 cord grips. 

Load Cell Cable 

Serial Communications 

Analog Output, Digital Input 

AC Power Cord 

Figure 2-1. Recommended Cord Grip Assignments

2.3.1 Cable Grounding 

Except for the power cord, all cables routed through 

the cord grips should be grounded against the 

indicator backplate. Do the following to ground 

shielded cables: 

• Use the lockwashers, clamps, and kep nuts 

provided in the parts kit to install grounding 

clamps on the backplate studs adjacent to cord 

grips. Install grounding clamps only for cord 

grips that will be used; do not tighten nuts. 

• Route cables through cord grips and grounding 

clamps to determine cable lengths required to 

reach cable connectors. Mark cables to remove 

insulation and shield as described below: 

• For cables with foil shielding, strip insulation 

and foil from the cable half an inch (15 mm) 

past the grounding clamp (see Figure 2-2). 

Fold the foil shield back on the cable where 

the cable passes through the clamp. Ensure 

silver (conductive) side of foil is turned 

outward for contact with the grounding 

clamp. 

• For cables with braided shielding, strip cable 

insulation and braided shield from a point just 

past the grounding clamp. Strip another half 

inch (15 mm) of insulation only to expose the 

braid where the cable passes through the 

clamp (see Figure 2-2). 

To setup switch 

JP4 

–EXC 

+EXC 

–SENSE 

+SENSE 

–SIG 

+SIG 

6 

5 

4 

3 

EEPROM 

LOAD CELL CONNECTOR 

2 

1 J1 

JP2 

JP1 

Microprocessor 

X2 

U4 

LED DRIVER 

ON OFF 

SET/ISP 

A/D Converter 

Load cell 

compensation jumper 

Figure 2-3. IQ plus 355 CPU and Power Supply Board 

 

• For load cell cables, cut the shield wire just past 

the grounding clamp. Shield wire function is 

provided by contact between the cable shield 

and the grounding clamp. 

• Route stripped cables through cord grips and 

clamps. Ensure shields contact grounding 

clamps as shown in Figure 2-2. Tighten 

grounding clamp nuts. 

• Finish installation using cable mounts and ties to 

secure cables inside of indicator enclosure. 

NOTE: Install lockwashers 

first, against backplate, 

Cord grip 

under grounding clamp 

Cut insulation here 

for braided cables 

Insulated cable Braid 

Foil (silver side out) 

Grounding clamp 

Length 

Shield wire (cut)Cut 

insulation here 

for foil-shielded cables 

of foil before folding 

back on cable insulation 

Figure 2-2. Grounding Clamp Attachment for Foil-Shielded 

and Braided Cabling 

+ 

J7 

GND 

EDPT 

Keypad Connector 

GND 

EDPR 

PRMA 

PRT 

IN2 

IN1 

1 2 3 4 5 6 7 

J4 SERIAL COMM & DIGITAL IN 

U5 

LED DRIVER 

Transformer 

F2 F1 

JP7 

Blue wire 

Brown wire 

GND 

C23 

– + 

BR1 

+ 

DIGITAL 

+5V 

TEST 

ANALOG 

GND 

ANALOG 

+5V 

TEST 

C67 

MECCA1 

Installation 

C66 

+ 

JMP4 

VR1 

C24 

VR2 

+ 

C25 + 

VR3 

ANALOG 

–5V 

TEST 

5

2.3.2 Load Cells 

To attach cable from a load cell or junction box, 

remove connector J1 from the board. The connector 

plugs into a header on the board as shown in 

Figure 2-6 on page 10. 

NOTE: Early versions of the IQ plus 355 CPU board used 

a 7-pin load cell connector. The 7-pin connector is not 

compatible with the current 6-pin header. 

Wire the load cell cable from the load cell or junction 

box to connector J1 as shown in Table 2-1. If using 

6-wire load cell cable (with sense wires), remove 

jumpers JP1 and JP2 before reinstalling connector J1 

(see Figure 2-3). For 4-wire installation, leave 

jumpers JP1 and JP2 on. 

When connections are complete, reinstall connector 

J1 onto the header so that it snaps securely into place. 

Use two cable ties to secure the load cell cable to the 

inside of the enclosure. 

J1 Pin Function 

1 +SIG 

2 –SIG 

3 +SENSE 

4 –SENSE 

5 +EXC 

6 –EXC 

NOTES: 

• Use grounding procedure described in Section 2.3.1 

on page 5. 

• For 6-wire connections, remove jumpers JP1 and JP2. 

Table 2-1. J1 Pin Assignments 

Setting the Load Cell Compensation Jumper 

The load cell compensation jumper (above the A/D 

converter location on the CPU board; see Figure 2-3 

on page 5) must be set ON for load cells with 

unbalanced bridges. The compensation jumper has the 

effect of lowering the positive excitation voltage. 

Uncompensated unbalanced load cells can cause 

instability or calibration errors. 

For RL1040 and RL1042 load cells, set the 

compensation jumper as follows: 

• RL1040 load cells: jumper OFF 

• RL1042 load cells: jumper ON 

For other load cell types, use the following procedure 

to determine the correct jumper position; 

1. Disconnect load cell from indicator and use 

an ohmmeter to measure the following: 

• +EXC to +SIG, +EXC to –SIG 

• –EXC to +SIG, –EXC to –SIG 

Measured values between the excitation line 

and each of the signal lines should be within 

2–3Ω. 

6 IQ plus 355 Installation Manual 

2. If the +EXC measurements are ≥ 5% larger 

than the –EXC measurements, set the 

compensation jumper in the ON position. If 

the +EXC measurements are < 5% greater (or 

are less) than the –EXC measurements, set the 

jumper in the OFF position. 

2.3.3 Serial Communications and Digital Inputs 

To attach serial communications and digital input 

cables, remove connector J4 from the board. 

Connector J4 provides connections for the EDP 

(Electronic Data Processing) port, printer port, and 

two digital inputs. Connect communications and 

digital input cables to connector J4 as shown in 

Table 2-2. 

Once cables are attached, reconnect J4 to the header 

on the board (see Figure 2-6 on page 10). Use cable 

ties to secure serial and digital input cables to the 

inside of the enclosure. 

The EDP port supports RS-232 communications only; 

the printer port provides either active 20 mA output or 

RS-232 transmission. Both ports are configured using 

the SERIAL menu. See Section 3.0 on page 12 for 

configuration information. 

Digital inputs can be set to provide several indicator 

functions, including all keypad functions. The inputs 

are active (on) with low voltage (0 VDC) and can be 

driven by TTL or 5V logic without additional 

hardware. Use the DIG IN menu to configure the 

digital inputs. 

Port J4 Pin Label Function 

EDP Port 1 EDPT RS-232 TxD 

2 GND RS-232 Ground / 

–20 mA OUT 

3 EDPR RS-232 RxD 

Printer Port 4 PRMA +20 mA OUT 

5 PRT RS-232 TxD 

Digital Inputs 6 IN2 Digital Input 2 

7 IN1 Digital Input 1 

Table 2-2. J4 Pin Assignments

2.3.4 Analog Output 

If the optional analog output module is installed, 

attach the output cable to connector J1 on the analog 

output board. Table 2-3 lists the analog output pin 

assignments. 

Use the ALGOUT menu to configure and calibrate the 

analog output module when cabling is complete. See 

Section 2.4 for information about installing the analog 

output module. 

Pin Signal 

1 + Current Out 

2 – Current Out 

3 + Voltage Out 

4 – Voltage Out 

Table 2-3. Analog Output Module Pin Assignments 

2.4 Analog Output Module Installation 

To install or replace the analog output module, follow 

the steps listed in Section 2.2 on page 4 for opening 

the IQ plus 355 enclosure. 

Mount the analog output module on its standoffs in 

the location shown in Figure 2-3 on page 5 and plug 

the module input into connector J5 on the IQ plus 355 

board. Connect output cable to the analog output 

module as shown in Table 2-3, then reassemble the 

enclosure (Section 2.5). 

See Section 7.8 on page 42 for analog output 

calibration procedures. 

2.5 Enclosure Reassembly 

Once cabling is complete, position the backplate over 

the enclosure and reinstall the backplate screws. Use 

the torque pattern shown in Figure 2-4 to prevent 

distorting the backplate gasket. Torque screws to 15 

in-lb (1.7 N-m). 

1 

3 

Torque pattern 

Fillister head screws 

10 

Torque backplate screws to 15 in-lb (1.7 N-m) 

5 6 

Setup switch access screw 

7 

Figure 2-4. IQ plus 355 Enclosure Backplate 

8 

9 

4 

2 

2.6 Board Removal 

If you must remove the IQ plus 355 CPU board, use 

the following procedure: 

1. Disconnect power to the indicator. Loosen 

cord grips and remove backplate as described 

in Section 2.2 on page 4. 

2. Unplug connectors J1 (load cell cable), J4 

(serial communications and digital inputs), J7 

(keypad ribbon cable), and JP4 (setup switch). 

Remove blue and brown power input wires at 

JP7. If an analog output board is installed, 

disconnect the analog output cable. See 

Figure 2-3 on page 5 for connector locations. 

3. Remove the four nuts from the corners of the 

CPU board, then lift the board out of the 

enclosure. 

To replace the CPU board, reverse the above 

procedure. Be sure to reinstall cable ties to secure all 

cables inside the indicator enclosure. 

Installation 7

2.7 Replacement Parts 

Table 2-4 lists replacement parts for the IQ plus 355, including all parts referenced in Figures 2-5 through 2-9. 

Ref 

Number PN Description (Quantity) Figure 

1 14626 Kep nuts, 8-32NC hex (3) Figure 2-5 on page 9, Figure 2-8 on page 11 

2 52211 Display and CPU board assembly, 115 VAC (1) Figure 2-6 on page 10 

52210 Display and CPU board assembly, 230 VAC (1) 

3 15365 Board mounting spacers (4) 

4 39017 Enclosure backplate (1) Figure 2-5 on page 9 

5 15626 Cable grips, PG9 (3) 

6 30375 Nylon seal rings for cable grips (3) 

7 15627 Locknuts, PCN9 (3) 

8 19538 Cable grip plugs (2) 

9 45042* Sealing washers (4) 

10 44676 Sealing washer for setup switch access screw (1) 

11 42640 Setup switch access screw, 1/4 x 28NF x 1/4 (1) 

12 41965 Power cord assembly, 115VAC (1) Figure 2-5 on page 9, Figure 2-7 on page 11 

45254 Power cord assembly, 230VAC (1) 

13 41964 Line filter assembly (1) Figure 2-7 on page 11 

14 14621 Kep nuts, 6-32NC hex (4) Figure 2-6 on page 10 

16 68403 Four-cornered wing knobs for tilt stand (2) Figure 2-5 on page 9 

30342 Two-cornered wing knobs for tilt stand (2) 

17 29635 Tilt stand (1) 

18 15144 Nylon washers for tilt stand, 1/4x1x1/16 (2) 

20 15134 Lock washers, internal tooth, No. 8 , Type A (4) 

22 50556 Overlay membrane panel (1) Figure 2-9 on page 11 

23 50555 Enclosure (1) 

24 14862* Screws, 8-32NC x 3/8 (4) Figure 2-5 on page 9 

26 45043 Ground wire, 4-in., No. 8 (1) 

27 39037 Backplate gasket (1) Figure 2-5 on page 9 

28 51974 Setup switch assembly (1) Figure 2-7 on page 11 

29 16892 Ground/Earth Label (1) 

30 15650* Cable tie mounts (8) Figure 2-6 on page 10 

31 45302 Line filter standoffs (2) Figure 2-7 on page 11 

33 15131 Lock washers, external tooth, No. 6, Type A (8) Figure 2-6 on page 10 

— 70600 7-position connectors for J4, and J12 (2) Figure 2-3 on page 5 

— 70599 6-position connectors for J1 (1) 

— 53848 200 mA TR5 subminiature fuses (2), 115 VAC F1 and F2 in Figure 2-3 on page 5 

53881 100 mA TR5 subminiature fuses (2), 230 VAC 

(See Caution below) 

* Additional parts included in parts kit. 

Caution 

For protection against risk of fire, replace fuses only with same type and rating fuse. 

See Section 7.11 on page 45 for complete fuse specifications. 


Table 2-4. Replacement Parts

9/4X 

27 

10 

11 

12 

20/4X 

1/3X 

26 

24/4X 

ZERO 

GROSS 

NET 

TARE 

UNITS 

PRINT 

To Line Filter 

See Line Filter 

and 

Ground Post 

Assembly 

4 

Figure 2-5. IQ plus 355 Backplate and Tilt Stand Assemblies 

8 

7 

6 

5 

18 

17 

16 

Installation 9


JP4 

J1 

Cable tie mounts 

for setup switch wires 

To setup switch 

J4 

J7 

Blue wire 

14/4X 

30/8X 

3/4X 

Figure 2-6. IQ plus 355 Enclosure and CPU Board 

2 

See JP7 detail below 

Cable tie 

33/8X 

Cable tie mounts 

for line filter 

Brown wire 

Line Filter Connection to JP7 

AC power in from line filter

Ground Post 

Assembly 

29 

13 

26 

AC input to CPU board JP7 

Figure 2-7. Line Filter Assembly 

23 

12 

22 

31 

28 

Setup switch connection 

to JP4 on CPU board 

ZERO 

GROSS 

NET 

To backplate 

ground post 

Figure 2-9. IQ plus 355 Enclosure and Overlay 

TARE 

UNITS 

1/3X 

To line filter 

To power cord 

Figure 2-8. Ground Post Assembly 

PRINT 

To CPU board J7 

Installation 11

3.0 Configuration 

To configure the IQ plus 355 indicator, the indicator 

must be placed in setup mode. The setup switch is 

accessed by removing the large fillister head screw on 

the enclosure backplate. Switch position is changed 

by inserting a screwdriver into the access hole and 

pressing the switch. 

When the indicator is placed in setup mode, the word 

CONFIG is shown on the display. The CONFIG menu 

is the first of nine main menus used to configure the 

indicator. Detailed descriptions of these menus are 

given in Section 3.2. When configuration is complete, 

return to the CONFIG menu and press the (ZERO) 

key to exit setup mode, then replace the setup switch 

access screw. 

3.1 Configuration Methods 

The IQ plus 355 indicator can be configured by using 

the front panel keys to navigate through a series of 

configuration menus or by sending commands or 

configuration data to the EDP port. Configuration 

using the menus is described in Section 3.1.3. 

Configuration using the EDP port can be 

accomplished using either the EDP command set 

described in Section 5.0 or Version 2.5 or later of the 

Revolution configuration utility. 

3.1.1 Revolution Configuration 

The Revolution configuration utility provides the 

preferred method for configuring the IQ plus 355 

indicator. Revolution runs on a personal computer to 

set configuration parameters for the indicator. When 

Revolution configuration is complete, configuration 

data is downloaded to the indicator. 

Figure 3-1. Sample Revolution Configuration Display 


Revolution supports both uploading and downloading 

of indicator configuration data. This capability allows 

configuration data to be retrieved from one indicator, 

edited, then downloaded to another. 

To use Revolution, do the following: 

1. Install Revolution on an IBM-compatible 

personal computer running Windows ® 3.11 or 

Windows 95. Minimum system requirements 

are 4MB of extended memory and at least 

5MB of available hard disk space. 

2. With both indicator and PC powered off, 

connect the PC serial port to the RS-232 pins 

on the indicator EDP port. 

3. Power up the PC and the indicator. Use the 

setup switch to place the indicator in setup 

mode. 

4. Start the Revolution program. 

Figure 3-1 shows an example of one of the Revolution 

configuration displays. 

Revolution provides online help for each of its 

configuration displays. Parameter descriptions 

provided in this manual for front panel configuration 

can also be used when configuring the indicator using 

Revolution: the interface is different, but the 

parameters set are the same. 

3.1.2 EDP Command Configuration 

The EDP command set can be used to configure the 

IQ plus 355 indicator using a personal computer, 

terminal, or remote keyboard. Like Revolution, EDP 

command configuration sends commands to the 

indicator EDP port; unlike Revolution, EDP 

commands can be sent using any external device 

capable of sending ASCII characters over a serial 

connection. 

EDP commands duplicate the functions available 

using the indicator front panel and provide some 

functions not otherwise available. EDP commands can 

be used to simulate pressing front panel keys, to 

configure the indicator, or to dump lists of parameter 

settings. See Section 5.0 on page 27 for more 

information about using the EDP command set.

3.1.3 Front Panel Configuration 

The IQ plus 355 indicator can be configured using a series of menus accessed through the indicator front panel 

when the indicator is in setup mode. Table 3-1 summarizes the functions of each of the main menus. 

Menu Menu Function 

CONFIG Configuration Configure grads, zero tracking, zero range, motion band, overload, tare function, sample rate, 

and digital filtering parameters. 

FORMAT Format Set format of primary and secondary units, display rate. 

CALIBR Calibration Calibrate indicator. See Section 4.0 on page 24 for calibration procedures. 

SERIAL Serial Configure EDP and printer serial ports. 

PROGRM Program Set power-up mode, regulatory mode, and consecutive number values. 

P FORMT Print Format Set print format used for gross and net tickets. See Section 5.0 for more information. 

DIG IN Digital Input Assign digital input functions. 

ALGOUT Analog Output Configure analog output module. Used only if analog output option is installed. 

VERSION Version Display installed software version number. 

Table 3-1. IQ plus 355 Menu Summary 


NET 

B/N Units 

Move UP / 

Increment Value 

Figure 3-2. Front Panel Key Functions in Setup Mode 

Four front panel keys are used as directional keys to navigate through the menus in setup mode (see Figure 3-2). 

The UNITS ( ) and PRINT ( ) keys scroll left and right (horizontally) on the same menu level; ZERO ( ) and 

GROSS/NET ( ) move up and down (vertically) to different menu levels. The TARE key ( ) serves as an Enter 

key for selecting parameter values within the menus. A label under each of these keys identifies the direction 

provided by the key when navigating through the setup menus. 

1 st Level 

Parameter 

2 nd Level 

Parameter 

Default value 

Move DOWN / 

Decrement Value 

ENTER Value 

Move LEFT / 

Previous 

SETUP MODE KEY FUNCTIONS 

Value Value Value 

When moving through values below the first menu level, press to return to the level 

above. Press or to move to the next parameter on the level above. 

Figure 3-3. Setup Mode Menu Navigation 

Move RIGHT / 

Next 

1 st Level 

Parameter 

2 nd Level 

Parameter 

Configuration 13

To select a parameter, press or to scroll left or 

right until the desired menu group appears on the 

display, then press to move down to the submenu or 

parameter you want. When moving through the menu 

parameters, the default or previously selected value 

appears first on the display. 

To change a parameter value, scroll left or right to 

view the values for that parameter. When the desired 

value appears on the display, press to select the 

value and move back up one level. To edit numerical 

values, use the navigation keys to select the digit and 

to increment or decrement the value (see Figure 3-4). 


0 0 0 0 0 0 

When editing numeric values, press or to change the 

digit selected. Press or to increment or decrement the 

value of the selected digit. 

Press to save the value entered and return to the level above. 

Figure 3-4. Editing Procedure for Numeric Values 

3.2 Menu Structures and Parameter Descriptions 

The following sections provide graphic representations of the IQ plus 355 menu structures. In the actual menu 

structure, the settings you choose under each parameter are arranged horizontally. To save page space, menu 

choices are shown in vertical columns. The factory default setting appears at the top of each column. 

Most menu diagrams are accompanied by a table that describes all parameters and parameter values associated 

with that menu. Default parameter values are shown in bold type.

3.2.1 Configuration Menu 

CONFIG XXXXXXX FORMAT 

GRADS 

10000 

number 

DIGFL1 

2 

4 

8 

16 

32 

64 

1 

CONFIG Menu 

OFF 

0.5D 

1D 

3D 

Figure 3-5. Configuration Menu 

Parameter 

Level 2 submenus 

Choices Description 

GRADS 10000 Graduations. Specifies the number of full scale graduations. The value entered must be in 

number the range 1–100 000 and should be consistent with legal requirements and environmental 

limits on system resolution. 

ZTRKBN OFF 

0.5D 

1D 

3D 

CALIBR 

ZTRKBN ZRANGE 

DIGFL2 

2 

4 

8 

16 

32 

64 

1 

SERIAL 

1.9% 

100% 

PROGRM XXXXXXX PFORMT 

DIGFL3 

2 

4 

8 

16 

32 

64 

1 

MOTBAN 

1D 

2D 

3D 

5D 

10D 

20D 

OFF 

DIG IN 

To calculate GRADS, use the formula, GRADS = Capacity / Display Divisions. 

Display divisions for primary and secondary units are specified on the FORMAT menu. 

Zero track band. Automatically zeroes the scale when within the range specified, as long 

as the input is within the configured zero range (ZRANGE parameter). Selections are ± 

display divisions. Maximum legal value varies depending on local regulations. 

Table 3-2. Configuration Menu Parameters 

XXXXXXX ALGOUT XXXXXXX VERS 

OVRLOA 

FS+2% 

FS+1D 

FS+9D 

FS 

DFSENS DFTHRH 

8OUT 

16OUT 

32OUT 

64OUT 

128OUT 

2OUT 

4OUT 

NONE 

2DD 

5DD 

10DD 

20DD 

50DD 

100DD 

200DD 

250DD 

SMPRAT 

15HZ 

30HZ 

3.75HZ 

7.5HZ 

TAREFN 

BOTH 

NOTARE 

PBTARE 

KEYED 

Configuration 15

CONFIG Menu 

ZRANGE 1.9% 

100% 

MOTBAN 1D 

2D 

3D 

5D 

10D 

20D 

OFF 

OVRLOA FS+2% 

FS+1D 

FS+9D 

FS 

SMPRAT 15HZ 

30HZ 

3.75HZ 

7.5HZ 

DIGFL1 

DIGFL2 

DIGFL3 

Parameter Choices Description 

2 

4 

8 

16 

32 

64 

1 

DFSENS 8OUT 

16OUT 

32OUT 

64OUT 

128OUT 

2OUT 

4OUT 

DFTHRH NONE 

2DD 

5DD 

10DD 

20DD 

50DD 

100DD 

200DD 

250DD 

TAREFN BOTH 

NOTARE 

PBTARE 

KEYED 


Zero range. Selects the range within which the scale can be zeroed. The 1.9% selection is 

± 1.9% around the calibrated zero point, for a total range of 3.8%. Indicator must be at 

standstill to zero the scale. Use 1.9% for legal-for-trade applications. 

Motion band. Sets the level, in display divisions, at which scale motion is detected. If 

motion is not detected for 1 second or more, the standstill symbol lights. Some 

operations, including print, tare, and zero, require the scale to be at standstill. Maximum 

legal value varies depending on local regulations. 

If OFF is selected, ZTRKBN should also be set to OFF. 

Overload. Determines the point at which the display blanks and an out-of-range error 

message is displayed. Maximum legal value varies depending on local regulations. 

Sample rate. Selects measurement rate, in samples per second, of the analog-to-digital 

converter. Lower sample rate values provide greater signal noise immunity. 

Digital filtering. Selects the digital filtering rate used to reduce the effects of mechanical 

vibration from the immediate area of the scale. 

Choices indicate the number of A/D conversions that are averaged to obtain the 

displayed reading. A higher number gives a more accurate display by minimizing the 

effect of a few noisy readings, but slows down the settling rate of the indicator. See 

Section 7.7 on page 41 for more information on digital filtering. 

Digital filter cutout sensitivity. Specifies the number of consecutive readings that must fall 

outside the filter threshold (DFTHRH parameter) before digital filtering is suspended. If 

NONE is selected, the filter is always enabled. 

Digital filter cutout threshold. Specifies the filter threshold, in display divisions. When a 

specified number of consecutive scale readings (DFSENS parameter) fall outside of this 

threshold, digital filtering is suspended. If NONE is selected, the filter is always enabled. 

Tare function. Enables or disables push-button and keyed tares. Possible values are: 

BOTH: Both push-button and keyed tares are enabled 

NOTARE: No tare allowed (gross mode only) 

PBTARE: Push-button tares enabled 

KEYED: Keyed tare enabled 

Table 3-2. Configuration Menu Parameters (Continued)

3.2.2 Format Menu 


PRIMAR SECNDR 

DECPNT 

888888 

888880 

8.88888 

88.8888 

888.888 

8888.88 

88888.8 

DSPDIV UNITS 

1D 

2D 

5D 

CALIBR 

Figure 3-6. Format Menu 

FORMAT Menu 

Parameter 



PRIMAR DECPNT Specifies the decimal position, display divisions, and units used for the primary units. See 

DSPDIV 

UNITS 

Level 3 submenu parameter descriptions. 

SECNDR DECPNT Specifies the decimal position, display divisions, units, and conversion multiplier used for 

DSPDIV 

UNITS 

MULT 

MULEXP 

the secondary units. See Level 3 submenu parameter descriptions. 

DSPRAT 250MS 

500MS 

750MS 

1SEC 

1500MS 

2SEC 

2500MS 

3SEC 

4SEC 

6SEC 

8SEC 

LB 

KG 

OZ 

TN 

T 

G 

NONE 

SERIAL 


DECPNT 

88888.8 

888888 

888880 

8.88888 

88.8888 

888.888 

8888.88 

Display rate. Sets the update rate for displayed values. Values are in milliseconds (MS) or 

seconds (SEC). 

Table 3-3. Format Menu Parameters 


DSPDIV UNITS MULT 

5D 

2D 

DIG IN 

KG 

0.453592 

1D OZ number 

TN 

T 

G 

NONE 

LB 

MULEXP 

decimal 

position 

DSPRAT 

250MS 

500MS 

750MS 

1SEC 

1500MS 

2SEC 

2500MS 

3SEC 

4SEC 

6SEC 

8SEC 

Configuration 17

FORMAT Menu 

Parameter 



Primary Units (PRIMAR Parameter) 

DECPNT 888888 Decimal point location. Specifies the location of the decimal point or dummy zeroes in the 

888880 

8.88888 

88.8888 

888.888 

8888.88 

88888.8 

primary unit display. Value should be consistent with local legal requirements. 

DSPDIV 1D 

2D 

5D 

UNITS LB 

KG 

OZ 

TN 

T 

G 

NONE 

Secondary Units (SECNDR Parameter) 

DECPNT 88888.8 

888888 

888880 

8.88888 

88.8888 

888.888 

8888.88 

DSPDIV 5D 

1D 

2D 

UNITS KG 

OZ 

TN 

T 

G 

LB 

NONE 

MULT 0.453592 

Enter other 

choices via 

keyboard 

MULEXP decimal 

position 


Display divisions. Selects the minimum division size for the primary units displayed weight. 

Specifies primary units for displayed and printed weight. Values are: LB=pound; 

KG=kilogram; OZ=ounce; TN=short ton; T=metric ton; G=gram. 

NOTE: Indicators sold outside North America are configured with KG for both primary and 

secondary units. 

Decimal point location. Determines the location of the decimal point or dummy zeros in 

the secondary unit display. 

Display divisions. Selects the value of minimum division size of the displayed weight. 

Specifies secondary units for displayed and printed weight. Values are: KG=kilogram; 

OZ=ounce; TN=short ton; T=metric ton; G=gram; LB=pound. 

Multiplier. Specifies the conversion factor by which the primary units are multiplied to 

obtain the secondary units. The default is 0.453592, which is the conversion factor for 

changing pounds to kilograms. NOTE: This parameter does not display the decimal point 

location for some values less than 1; use the MULEXP parameter to shift the decimal 

position of the multiplier. See Section 7.6 on page 40 for a list of multipliers. 

To toggle between primary and secondary units, press the UNITS key. 

Multiplier exponent. Sets the decimal position for multiplier values. 

Table 3-3. Format Menu Parameters (Continued)

3.2.3 Calibration Menu 

See Section 4.0 on page 24 for calibration procedures. 


WZERO 

*CAL* 

Display and edit 

zero calibration 

A/D count value 

CALIBR Menu 

CALIBR 

WVAL 


test weight value 

SERIAL 

WSPAN 

*CAL* 


span calibration 



REZERO 

*CAL* 

Press Enter to 

remove offset from 

zero and span 

calibrations 

Figure 3-7. Calibration Menu 

Parameter 



WZERO — Display and edit the zero calibration A/D count value. 

WVAL — 

DO NOT adjust this value after WSPAN has been set! 

Display and edit the test weight value. 

WSPAN — Display and edit the span calibration A/D count value. 

REZERO — Press Enter to remove an offset value from the zero and span calibrations. 

Use this parameter only after WZERO and WSPAN have been set. See Section 4.1 on 

page 24 for more information about using this parameter. 

Table 3-4. Calibration Menu Parameters 

3.2.4 Serial Menu 

See Section 7.3 on page 36 for information about the IQ plus 355 serial data format. 

CONFIG FORMAT XXXXXXX 

PROGRM PFORMT XXXXXXX 

EDP PRINT 

BAUD 

9600 

300 

600 

1200 

2400 

4800 

BITS TERMIN 

7EVEN 

7ODD 

CALIBR 

8NONE CR/LF 

CR 

SERIAL 

EOLDLY 

000000 

number 

ECHO 

ON 

OFF 

Same as EDP 

Figure 3-8. Serial Menu 

DIG IN 

DIG IN 


ALGOUT XXXXXXX XXXXXXX VERS 

STREAM 

OFF 

EDP 

PRN 

PRNDES 

EDP 

PRN 

Configuration 19

SERIAL Menu 

Parameter Choices Description 


EDP BAUD Specifies settings for baud rate, data bits, termination characters, and end-of-line delay used by 

BITS 

TERMIN 

EOLDLY 

the EDP port. 

PRINT BAUD 

BITS 

TERMIN 

EOLDLY 

STREAM OFF 

EDP 

PRN 

PRNDES EDP 

PRN 

3.2.5 Program Menu 


Specifies settings for baud rate, data bits, termination characters, and end-of-line delay used by 

the printer port. 

Selects the serial port used for continuous transmission. See Section 7.3 on page 36 for 

information about the IQ plus 355 continuous data format. 

Print destination. Selects the port for data transmission when the PRINT key is pressed or the 

KPRINT EDP command is sent. 

Level 3 Submenus EDP Port and Printer Port 

BAUD 9600 

300 

600 

1200 

2400 

4800 

Baud rate. Selects the transmission speed for the EDP or printer port. 

BITS 8NONE 

7EVEN 

7ODD 

TERMIN CR/LF 

CR 

EOLDLY 0 

number 

ECHO OFF 

ON 


PWRUPM 

GO NTEP 

DELAY 

OIML 

CANADA 

NONE 

Selects number of data bits and parity of data transmitted from the EDP or printer port. 

Termination character. Selects termination character for data sent from the EDP or printer port. 

End-of-line delay. Sets the delay period, in 0.1-second intervals, from when a formatted line is 

terminated to the beginning of the next formatted serial output. Value specified must be in the 

range 0-255, in tenths of a second (10 = 1 second). 

This command enables or disables echoing of the serial commands sent to the indicator. 

REGULA 

CALIBR 

Table 3-5. Serial Menu Parameters 

SERIAL 

CONSNU 

000000 

number 


CONSTU 

000000 

number 

Figure 3-9. ProgramMenu 

DIG IN 

XXXXXXX ALGOUT XXXXXXX VERS

PROGRM Menu 

Parameter 



PWRUPM GO 

Power up mode. In GO mode, the indicator goes into operation immediately after a brief power 

DELAY up display test. 

REGULA NTEP 

OIML 

CANADA 

NONE 

CONSNU 000000 

number 

CONSTU 000000 

number 

In DELAY mode, the indicator performs a power up display test, then enters a 30-second 

warm up period. If no motion is detected during the warm up period, the indicator becomes 

operational when the warm up period ends; if motion is detected, the delay timer is reset and 

the warm up period repeated. 

Regulatory mode. Specifies the regulatory agency having jurisdiction over the scale site. 

• OIML, NTEP, and CANADA modes allow a tare to be acquired at any weight greater than 

zero. NONE allows tares to be acquired at any weight value. 

• OIML, NTEP, and CANADA modes allow a tare to be cleared only if the gross weight is at 

no load. NONE allows tares to be cleared at any weight value. 

• NTEP and OIML modes allow a new tare to be acquired even if a tare is already present. 

In CANADA mode, the previous tare must be cleared before a new tare can be acquired. 

• NONE, NTEP and CANADA modes allow the scale to be zeroed in either gross or net 

mode as long as the current weight is within the specified ZRANGE. In OIML mode, the 

scale must be in gross mode before it can be zeroed; pressing the ZERO key in net mode 

clears the tare. 

Consecutive numbering. Allows sequential numbering for print operations. The consecutive 

number value is incremented following each print operation. 

The initial value of this parameter is set to the start up value specified on the CONSTU 

parameter. Changing either CONSTU or CONSNU immediately resets the consecutive number 

used for printing. 

Consecutive number start up value. Specifies the initial consecutive number (CONSNU) value 

used when the indicator is powered on. 

Table 3-6. Program Menu Parameters 

3.2.6 Print Format Menu 

See Section 6.0 on page 32 for information about custom print formatting. 


CALIBR 

SERIAL 

Press to insert a space 

before the active character 

Scroll left in format string 

Decrement ASCII value of active character 


GFMT 

Display first 6 

characters of format 


active character and 

ASCII value 

Delete active 

character 

Figure 3-10. Print Format Menu 

DIG IN 


NFMT 

Same as GFMT 

Scroll right in format string 

Increment ASCII value of active character 

Configuration 21

3.2.7 Digital Input Menu 


DIG IN Menu 

CALIBR 


SERIAL 


Figure 3-11. Digital Input Menu 

DIGIN1 

Parameter 



DIGIN1 OFF 

Specifies the function activated by digital inputs 1 and 2. 

DIGIN2 ZERO 

TARE 

NT/GRS 

UNITS 

DSPTAR 

PRINT 

CLRCN 

KBDLOC 

HOLD 

• ZERO, NT/GRS (net/gross mode toggle), TARE, UNITS, and PRINT provide the same 

functions as the front panel keys. 

• DSPTAR displays the current tare value. 

• CLRCN resets the consecutive number to the value specified on the CONSTU parameter 

(PROGRM menu). 

• KBDLOC disables the keypad while the digital input is held low. 

• HOLD holds the current display. Releasing this input clears the running average filter. 

DIG IN 

OFF 

ZERO 

TARE 

NT/GRS 

UNITS 

DSPTAR 

PRINT 

CLRCN 

Table 3-7. Digital Input Menu Parameters 


DIGIN2 

OFF 

ZERO 

TARE 

NT/GRS 

UNITS 

DSPTAR 

PRINT 

CLRCN 

KBDLOC KBDLOC 

HOLD HOLD

3.2.8 Analog Output Menu 

The ALGOUT menu is used only if the analog output option is installed. If the analog output option is installed, 

configure all other indicator functions and calibrate the indicator (see Section 4.0 on page 24) before configuring 

the analog output. See Section 7.8 on page 42 for analog output calibration procedures. 


SOURCE 

GROSS 

NET 

CALIBR 

SERIAL 

OFFSET ERRACT 

0% 

20% 

FULLSC 

HOLD 


MIN 

000000 

number 

Figure 3-12. Analog Output Menu 

ALG OUT Menu 

Parameter 



SOURCE GROSS 

NET 

Specifies the source tracked by the analog output. 

OFFSET 0% 

Zero offset. Selects whether the analog output supplies voltage (0–10 V) or current (4–20 mA) 

20% output. Select 0% for 0–10 V output; select 20% for 4–20 mA output. 

ERRACT FULLSC Error action. Specifies how the analog output responds to system error conditions. 

HOLD Possible values are: 

ZEROSC 

FULLSC Set to full value (10 V or 20 mA) 

HOLD: Hold current value 

MIN 000000 

ZEROSC: Set to zero value (0 V or 4 mA) 

Specifies the minimum weight value tracked by the analog output. Specify a weight value (in 

number primary units) in the range 0–999 990. 

MAX 010000 Specifies the maximum weight value tracked by the analog output. Specify a weight value (in 

number primary units) in the range 0–999 990. 

TWZERO — Tweak zero. Adjust the analog output zero calibration. Use a multimeter to monitor the analog 

output value. Press and hold or to adjust the output. Press to save the new value. 

TWSPAN — Tweak span. Adjust the analog output span calibration. Use a multimeter to monitor the analog 

output value. Press and hold or to adjust the output. Press to save the new value. 

Table 3-8. Analog Output Menu Parameters 

3.2.9 Version Menu 

The VERS menu is used to check the software version installed in the indicator. There are no parameters 

associated with the Version menu: when selected, the indicator displays the installed software version number. 

CONFIG FORMAT 

XXXXXXX 

CALIBR 

ZEROSC 

SERIAL 

PROGRM PFORMT XXXXXXX 

DIG IN 

Figure 3-13. Version Menu 


MAX TWZERO 

10000 

number 

DIG IN 

ALGOUT XXXXXXX XXXXXXX VERS 

Software 

version 

TWSPAN 

Configuration 23

4.0 Calibration 

The IQ plus 355 can be calibrated using the front panel, EDP commands, or the Revolution configuration 

utility. Each method consists of the following steps: 

• Zero calibration 

• Entering the test weight value 

• Span calibration 

• Optional rezero calibration for test weights using hooks or chains. 

The following sections describe the calibration procedure for each of the calibration methods. 


WZERO 

*CAL* 


zero calibration 


CALIBR 

WVAL 


test weight value 

4.1 Front Panel Calibration 

To calibrate the indicator using the front panel, do the 

following: 

1. Place the indicator in setup mode (display reads 

CONFIG) and remove all weight from the scale 

platform. If your test weights require hooks or 

chains, place the hooks or chains on the scale for 

zero calibration. 

2. Press until the display reads CALIBR (see 

Figure 4-1). Press to go to zero calibration 

(WZERO). 

3. With WZERO displayed, press to calibrate 

zero. The indicator displays *CAL* while 

calibration is in progress. When complete, the 

A/D count for the zero calibration is displayed. 

DO NOT adjust this value after WSPAN has 

been set! Press again to save the zero 

calibration value and go to the next prompt 

(WVAL). 

4. With WVAL displayed, place test weights on the 

scale and press to show the test weight value. 

Use the procedure shown in Figure 4-2 to enter 

the actual test weight, then press to save the 

value and go to span calibration (WSPAN). 

5. With WSPAN displayed, press to calibrate 

span. The indicator displays *CAL* while 

calibration is in progress. When complete, the 

A/D count for the span calibration is displayed. 

Press again to save the span calibration value 

and go to the next prompt (REZERO). 


SERIAL 

WSPAN 

*CAL* 


span calibration 



REZERO 

*CAL* 

Press Enter to 

remove offset from 

zero and span 

calibrations 

Figure 4-1. Calibration (CALIBR) Menu 

DIG IN 


6. The rezero function is used to remove a 

calibration offset when hooks or chains are used 

to hang the test weights. 

• If no other apparatus was used to hang the test 

weights during calibration, remove the test 

weights and press to return to the CALIBR 

menu. 

• If hooks or chains were used during 

calibration, remove these and the test weights 

from the scale. With all weight removed, 

press to rezero the scale. This function 

adjusts the zero and span calibration values. 

The indicator displays *CAL* while the zero 

and span calibrations are adjusted. When 

complete, the adjusted A/D count for the zero 

calibration is displayed. Press to save the 

value, then press to return to the CALIBR 

menu. 

7. Press until the display reads CONFIG, then 

press to exit setup mode. 

0 0 0 0 0 0 

When editing numeric values, press or to change the 

digit selected. Press or to increment or decrement the 

value of the selected digit. 

Press to save the value entered and return to the level above. 

Figure 4-2. Editing Procedure for Numeric Values

4.2 EDP Command Calibration 

To calibrate the indicator using EDP commands, the 

indicator EDP port must be connected to a terminal or 

personal computer. See Section 2.3.3 on page 6 for 

EDP port pin assignments; see Section 5.0 on page 27 

for more information about using EDP commands. 

Once the indicator is connected to the sending device, 

do the following: 

1. Place the indicator in setup mode (display reads 

CONFIG) and remove all weight from the scale 

platform. If your test weights require hooks or 

chains, place the hooks or chains on the scale for 

zero calibration. 

2. Send the WZERO EDP command to calibrate 

zero. The indicator displays *CAL* while 

calibration is in progress. 

4.3 Revolution Calibration 

To calibrate the indicator using Revolution, the 

indicator EDP port must be connected to a PC running 

the Revolution configuration utility. 

Use the following procedure to calibrate the indicator: 

1. Select Calibrate Indicator from the Revolution 

main menu. 

2. On the Indicator Calibration display, select the 

indicator model (IQ+355) and communications 

port then click OK. 

3. Revolution uploads calibration data from the 

indicator then presents the information in a 

display like that shown in Figure 4-3. 

Figure 4-3. Revolution Calibration Display 

3. Place test weights on the scale and use the 

WVAL command to enter the test weight value 

in the following format: 

WVAL=nnnnnn 

4. Send the WSPAN EDP command to calibrate 

span. The indicator displays *CAL* while 

calibration is in progress. 

5. To remove an offset value, clear all weight from 

the scale, including hooks or chains used to hang 

test weights, then send the REZERO EDP 

command. The indicator displays *CAL* while 

the zero and span calibrations are adjusted. 

6. Send the KUPARROW EDP command to exit 

setup mode. 

4. Enter the Value of Test Weight to be used for span 

calibration then click OK. 

5. The Zero Calibration dialog box prompts you to 

remove all weight from the scale. Clear the scale 

and click OK to begin zero calibration. NOTE: If 

your test weights require hooks or chains, place 

the hooks or chains on the scale for zero 

calibration. 

6. When zero calibration is complete, the Span 

Calibration dialog box prompts you to place test 

weights on the scale for span calibration. Place 

tests weights on the scale then click OK. 

7. When calibration is complete, the New Settings 

fields of the Indicator Calibration display are 

filled in. Click Exit to save the new values and 

return to the Revolution main menu; to restore 

the previous calibration values, click Restore 

Settings. 

Calibration 25

4.4 More About Calibration 

The following topics provide additional information 

about compensating for environmental factors 

(Section 4.4.1) and diagnostic information for 

determining expected zero and span coefficients. 

4.4.1 Adjusting Final Calibration 

Calibration may be affected by environmental factors 

including wind, vibration, and angular loading. For 

example, if the scale is calibrated with 1000 lb, a 

strain test may determine that at 2000 lb the 

calibration is 3 lb high. In this case, final calibration 

can be adjusted by tweaking WVAL to 998.5 lb. This 

adjustment provides a linear correction of 1.5 lb per 

1000 lb. 

To adjust the final calibration, return to the WVAL 

prompt and press to show the test weight value. 

Press or to adjust calibration up or down. Press 

to save the value, then press to return to the 

CALIBR menu. 

4.4.2 Zero Deadload A/D Counts 

Table 4-1 lists the ideal A/D counts that result from 

input signals of 0–45 mV with zero deadload. Actual 

values will typically be higher than the values shown 

in Table 4-1 but the ideal values can be used when 

calibrating the indicator with no attached scale. 

Input Signal (mV) Raw A/D Count 

0 105 000 

1 126 000 

2 147 000 

3 168 000 

4 189 000 

5 210 000 

6 231 000 

7 252 000 

8 273 000 

9 294 000 

10 315 000 

15 420 000 

20 525 000 

30 735 000 

45 1 050 000 

Table 4-1. Ideal A/D Raw Counts 


4.4.3 Calculating the Span Coefficient 

The span coefficient value displayed by the WSPAN 

parameter can be calculated using the following 

formula: 

(21000 * mV_signal_input) + zero_coefficient 

where mV_signal_input is the change in the signal 

input when the test weight is applied and the 

zero_coefficient is the WZERO value. Actual values 

typically vary from the calculated value.

5.0 EDP Commands 

The IQ plus 355 indicator can be controlled by a 

personal computer or remote keyboard connected to 

the indicator EDP port. Control is provided by a set of 

EDP commands that can simulate front panel key 

press functions, display and change setup parameters, 

and perform reporting functions. The EDP port 

provides the capability to print configuration data or to 

save that data to an attached personal computer. This 

section describes the EDP command set and 

procedures for saving and transferring data using the 

EDP port. 

5.1 The EDP Command Set 

The EDP command set can be divided into five 

groups: key press commands, reporting commands, 

the RESETCONFIGURATION special function 

command, parameter setting commands, and transmit 

weight data commands. 

When the indicator processes an EDP command, it 

responds with the message OK. The OK response 

verifies that the command was received and has been 

executed. If the command is unrecognized or cannot 

be executed, the indicator responds with ??. 

The following sections list the commands and 

command syntax used for each of these groups. 

5.1.1 Key Press Commands 

Key press EDP commands (see Table 5-1) simulate 

pressing the keys on the front panel of the indicator. 

Most commands can be used in both setup and 

weighing mode. Several of the commands serve as 

“pseudo” keys, providing functions that are not 

represented by a key on the front panel. 

For example, to enter a 15-pound tare weight using 

EDP commands: 

1. Type K1 and press ENTER (or RETURN). 

2. Type K5 and press ENTER. 

3. Type KTARE and press ENTER. The display 

shifts to net mode when the tare is entered. 

Command Function 

KZERO In weighing mode, press the ZERO key 

KGROSSNET In weighing mode, press the 

GROSS/NET key 

KGROSS Go to gross mode (pseudo key) 

KNET Go to net mode (pseudo key) 

KTARE Press the TARE key 

KUNITS In weighing mode, press the UNITS key 

KPRIM Go to primary units (pseudo key) 

KSEC Go to secondary units (pseudo key) 

KNEWID Enter new ID (pseudo key) 

KPRINT In weighing mode, press the PRINT key 

KLEFTARROW In setup mode, move left in the menu 

KRIGHTARROW In setup mode, move right in the menu 

KUPARROW In setup mode, move up in the menu 

KDOWNARROW In setup mode, move down in the menu 

K0 Press number 0 (zero) 

K1 Press number 1 









KDOT Press the decimal point (.) 

KENTER Press the ENTER key 

Table 5-1. EDP Key Press Commands 

EDP Commands 27

5.1.2 Reporting Commands 

Reporting commands (see Table 5-2) send specific 

information to the EDP port. These commands can be 

used in both setup mode and normal mode. 

Command Function 

DUMPALL List all parameter values 

VERSION Write IQ plus 355 software version 

P Write current displayed weight with units 

identifier. See Section 7.2 on page 35 for 

more information. 

ZZ Write current weight and annunciator 

status. See Section 7.2 on page 35 for 

more information. 

S Write one frame of stream format 

Table 5-2. EDP Reporting Commands 

5.1.3 The RESETCONFIGURATION Command 

The RESETCONFIGURATION command can be 

used to restore all configuration parameters to their 

default values. Before issuing this command, the 

indicator must be placed in test mode (press and hold 

setup switch for approximately three seconds to show 

TEST menu). 

This command is equivalent to using the DEFLT 

function on the TEST menu. See Section 7.9 on 

page 43 for more information about test mode and 

using the TEST menu. NOTE: All load cell calibration 

settings are lost when the RESETCONFIGURATION 

command is run. 


5.1.4 Parameter Setting Commands 

Parameter setting commands allow you to display or 

change the current value for a particular configuration 

parameter (Tables 5-3 through 5-10). 

Current configuration parameter settings can be 

displayed in either setup mode or normal mode using 

the following syntax: 

command 

Most parameter values can be changed in setup mode 

only. Use the following command syntax when 

changing parameter values: 

command=value 

where value is a number or a parameter value. Use no 

spaces before or after the equal (=) sign. If you type an 

incorrect command or value, the display reads ??. 

Changes to the parameters are saved as they are 

entered but typically do not take effect until you exit 

setup mode. 

For example, to set the motion band parameter to 5, 

type the following: 

MOTBAND=5D 

Command Description Values 

GRADS Graduations 1–100 000 

ZTRKBND Zero track band OFF, 0.5D, 1D, 3D 

ZRANGE Zero range 1.9%, 100% 

MOTBAND Motion band 1D, 2D, 3D, 5D, 10D, 20D, OFF 

OVRLOAD Overload FS+2%, FS+1D, FS+9D, FS 

SMPRAT Sample rate 15HZ, 30HZ, 7.5HZ, 3.75HZ 

DIGFLTR1 

DIGFLTR2 

DIGFLTR3 

Digital filtering 1, 2, 4, 8, 16, 32, 64 

DFSENS Digital filter cutout sensitivity 2OUT, 4OUT, 8OUT, 16OUT, 32OUT, 64OUT, 128OUT 

DFTHRH Digital filter cutout threshold NONE, 2DD, 5DD, 10DD, 20DD, 50DD, 100DD, 200DD, 250DD 

TAREFN Tare function BOTH, NOTARE, PBTARE, KEYED 

Table 5-3. CONFIG EDP Commands


PRI.DECPNT Primary units decimal position 8.88888, 88.8888, 888.888, 8888.88, 88888.8, 888888, 888880 

PRI.DSPDIV Primary units display divisions 1D, 2D, 5D 

PRI.UNITS Primary units LB, KG, OZ, TN, T, G, NONE 

SEC.DECPNT Secondary units decimal position 8.88888, 88.8888, 888.888, 8888.88, 88888.8, 888888, 888880 

SEC.DSPDIV Secondary units display divisions 1D, 2D, 5D 

SEC.UNITS Secondary units LB, KG, OZ, TN, T, G, NONE 

SEC.MULT Secondary units multiplier 0.00000–9999.99 

DSPRATE Display rate 250MS, 500MS, 750MS, 1SEC, 1500MS, 2SEC, 2500MS, 3SEC, 

4SEC, 6SEC, 8SEC 

Table 5-4. FORMAT EDP Commands 


WZERO Zero calibration — 

WVAL Test weight value test_weight_value 

WSPAN Span calibration — 

REZERO Rezero — 

LC.CD Set deadload coefficient value 

LC.CW Set span coefficient value 

Table 5-5. CALIBR EDP Commands 


EDP.BAUD EDP port baud rate 300, 600, 1200, 2400, 4800, 9600 

EDP.BITS EDP port data bits/parity 8NONE, 7EVEN, 7ODD 

EDP.TERMIN EDP port termination character CR/LF, CR 

EDP.EOLDLY EDP port end-of-line delay 0–255 (0.1-second intervals) 

PRN.BAUD Printer port baud rate 300, 600, 1200, 2400, 4800, 9600 

PRN.BITS Printer port data bits/parity 8NONE, 7EVEN, 7ODD 

PRN.TERMIN Printer port termination character CR/LF, CR 

PRN.EOLDLY Printer port end-of-line delay 0–255 (0.1-second intervals) 

STREAM Streaming port OFF, EDP, PRN 

PRNDEST Print destination EDP, PRN 

Table 5-6. SERIAL EDP Commands 


PWRUPMD Power up mode GO, DELAY 

REGULAT Regulatory compliance NTEP, OIML, CANADA, NONE 

CONSNUM Consecutive number 0–999 999 

CONSTUP Consecutive number start-up value 0–999 999 

Table 5-7. PROGRM EDP Commands 

EDP Commands 29


GFMT Gross demand print format string See Section 6.0 on page 32 for detailed information 

NFMT Net demand print format string 

DIGIN1 

DIGIN2 

5.1.5 Normal Mode Commands 

The serial transmit weight data commands (see Table 5-11) transmit data to the EDP port on demand. The SX 

and EX commands are valid only in normal operating mode; all other commands are valid in either setup or 

normal mode. 


Table 5-8. PFORMT EDP Commands 


Digital input function OFF, ZERO, TARE, NT/GRS, UNITS, DSPTAR, PRINT, CLRCN, 

KBDLOC, HOLD 

Table 5-9. DIG IN EDP Commands 


SOURCE1 Analog output source GROSS, NET 

OFFSET Zero offset 0%, 20% 

ERRACT Error action FULLSC, HOLD, ZEROSC 

MIN Minimum value tracked 0–999 990 

MAX Maximum value tracked 0–999 990 

ZERO1 Zero calibration 0–16 383 

SPAN1 Span calibration 0–16 383 

Table 5-10. ALGOUT EDP Commands 

Command Description Response Format 

SX Start EDP streaming OK or ?? 

EX Stop EDP streaming OK or ?? 

KNEWID Set or query product ID number nnnnnnn 

RS Reset system — 

XG Transmit gross weight in displayed units nnnnnn UU 

XN Transmit net weight in displayed units 

where nnnnnn is the weight value, UU is the units. 

XT Transmit tare weight in displayed units 

XG2 Transmit gross weight in non-displayed units 

XN2 Transmit net weight in non-displayed units 

XT2 Transmit tare weight in non-displayed units 

XE Query system error conditions nnnnn nnnnn 

See Section 7.1.2 on page 35 for detailed information about 

the XE command response format. 

Table 5-11. Normal Mode EDP Commands

5.2 Saving and Transferring Data 

Connecting a personal computer to the IQ plus 355 

EDP port allows you to save indicator configuration 

data to the PC or to download configuration data from 

the PC to an indicator. The following sections describe 

the procedures for these save and transfer operations. 

5.2.1 Saving Indicator Data to a Personal Computer 

Configuration data can be saved to a personal 

computer connected to the EDP port. The PC must be 

running a communications program such as 

PROCOMMPLUS ® . See Section 2.3.3 on page 6 for 

information about serial communications wiring and 

EDP port pin assignments. 

When configuring the indicator, ensure that the values 

set for the BAUD and BITS parameters on the 

SERIAL menu match the baud rate, bits, and parity 

settings configured for the serial port on the PC. Set 

the PRNDES parameter to EDP. 

To save all configuration data, place the indicator in 

setup mode and send the DUMPALL EDP command 

to the indicator. The IQ plus 355 responds by sending 

all configuration parameters to the PC as 

ASCII-formatted text. 

5.2.2 Downloading Configuration Data from PC to 

Indicator 

Configuration data saved on a PC or floppy disk can 

be downloaded from the PC to an indicator. This 

procedure is useful when a number of indicators with 

similar configurations are set up or when an indicator 

is replaced. 

To download configuration data, connect the PC to the 

EDP port as described in Section 5.2.1. Place the 

indicator in setup mode and use the PC 

communications software to send the saved 

configuration data to the indicator. When transfer is 

complete, calibrate the indicator as described in 

Section 4.0 on page 24. 

NOTES: 

• Calibration settings are included in the 

configuration data downloaded to the 

indicator. If the receiving indicator is a direct 

replacement for another IQ plus 355 and the 

attached scale is not changed, recalibration is 

not required. 

• When downloading configurations that 

include changed serial communications 

settings, edit the data file to place the serial 

communications changes at the end of the file. 

Communication between the PC and indicator 

will be lost once the indicator receives 

settings for baud rate (BAUD parameter) or 

data bits and parity (BITS parameter) that do 

not match those configured for the PC. 

EDP Commands 31

6.0 Print Formatting 

The IQ plus 355 provides two print formats, GFMT 

and NFMT, that determine the format of the printed 

output when the PRINT key is pressed or when a 

KPRINT EDP command is received. If a tare has been 

entered or acquired, NFMT is used; otherwise, GFMT 

is used. 

Each print format can be customized to include up to 

300 characters of information, such as company name 

and address, on printed tickets. You can use the 

indicator front panel (PFORMT menu), EDP 

commands, or the Revolution configuration utility to 

customize the print formats. 

6.1 Print Formatting Commands 

Table 6-1 lists commands you can use to format the 

gross and net print formats. Commands included in 

the format strings must be enclosed between < and > 

delimiters. Any characters outside of the delimiters 

are printed as text on the ticket. Text characters can 

include any ASCII character that can be printed by the 

output device. 

Command Description 

Gross weight in displayed units 

Gross weight in non-displayed units 

Net weight in displayed units 

Net weight in non-displayed units 

Tare weight in displayed units 

Tare weight in non-displayed units 

ID number 

Consecutive number 

New line (nn = number of termination ( 

or ) characters)* 

Space (nn = number of spaces)* 

Toggle weight data format (formatted/ 

unformatted)** 

Gross, net, and tare weights are 9 digits in length, including 

sign (10 digits with decimal point), followed by a space and 

a two-digit units identifier. Total field length with units 

identifier is 12 (or 13) characters. 

ID and consecutive number (CN) fields are 1–6 characters in 

length, as required. 

* If nn is not specified, 1 is assumed. Value must be in the 

range 1–99. 

** After receiving an SU command, the indicator sends 

unformatted data until the next SU command is received. 

Unformatted data omits decimal points, leading and trailing 

characters. 

Table 6-1. Print Format Commands 


The default GFMT and NFMT print formats use only 

the new line () command and the commands for 

gross, net, and tare weights in displayed units (, 

, and ). 

The default IQ plus 355 print formats are shown in 

Table 6-2: 

Format Default Format String Sample Output 

GFMT GROSS 2046.81 LB GROSS 

NFMT GROSS 

TARE 

NET 

4053.1 LB GROSS 

15.6 LB TARE 

4037.5 LB NET 

NOTE: In OIML and CANADA modes, the letters PT (preset 

tare) are automatically inserted after the printed tare weight. 

Table 6-2. GFMT and NFMT Formats 

NOTES: 

• The , , and commands listed 

in Table 6-1 print the gross, net, and tare 

weights in non-displayed units—that is, in the 

units not currently displayed on the indicator. 

• ID numbers included in the print format string 

( command) must be set using the 

KNEWID EDP command. 

• The 300-character limit of each print format 

string includes the output field length of the 

print formatting commands, not the command 

length. For example, if the indicator is 

configured to show a decimal point, the 

command generates an output field of 13 

characters: the 10-character weight value 

(including decimal point), one space, and a 

two-digit units identifier. 

6.2 Customizing Print Formats 

The following sections describe procedures for 

customizing the GFMT and NFMT formats using the 

EDP port, the front panel (PFORMT menu), and the 

Revolution configuration utility. 

6.2.1 Using the EDP Port 

With a personal computer, terminal, or remote 

keyboard attached to the IQ plus 355 EDP port, you 

can use the EDP command set to customize the print 

format strings. 

To view the current setting of a format string, type the 

name of the string (GFMT or NFMT) and press 

ENTER. For example, to check the current 

configuration of the GFMT format, type GFMT and 

press ENTER. The indicator responds by sending the 

current configuration for the gross format: 

GFMT= GROSS

To change the format, use the GFMT or NFMT EDP 

command followed by an equals sign (=) and the 

modified print format string. For example, to add the 

name and address of a company to the gross format, 

you could send the following EDP command: 

GFMT=FINE TRANSFER CO32400 WEST 

HIGHWAY ROADSMALLTOWN 

GROSS 

A ticket printed using this format might look like the 

following: 

FINE TRANSFER CO 

32400 WEST HIGHWAY ROAD 

SMALLTOWN 

1345 LB GROSS 


CALIBR 

SERIAL 

Press to insert a space 

before the active character 

Scroll left in format string 

Decrement ASCII value of active character 

6.2.2 Using the Front Panel 

If you have no access to equipment for 

communication through the EDP port or are working 

at a site where such equipment cannot be used, you 

can use the PFORMT menu (see Figure 6-1) to 

customize the print formats. 

Using the PFORMT menu, you can edit the print 

format strings by changing the decimal values of the 

ASCII characters in the format string. 

NOTE: Lower-case letters and some special characters 

cannot be displayed on the IQ plus 355 front panel 

(see the ASCII character chart on page 37) and are 

shown as blanks. The IQ plus 355 can send or receive 

any ASCII character; the character printed depends on 

the particular ASCII character set implemented for the 

receiving device. 

Figure 6-1. PFORMT Menu, Showing Alphanumeric Character Entry Procedure 

6.2.3 Using Revolution 

The Revolution configuration utility provides a print 

formatting grid with a tool bar. The grid allows you to 

construct the print format without the formatting 

commands ( and ) required by the front 

panel or EDP command methods. Using Revolution, 

you can type text directly into the grid, then select 

weight value fields from the tool bar and place them 

where you want them to appear on the printed ticket. 

Figure 6-2 shows an example of the Revolution print 

formatting grid. 


GFMT 

Display first 6 

characters of format 


active character and 

ASCII value 

Delete active 

character 

DIG IN 


NFMT 

Same as GFMT 

Scroll right in format string 

Increment ASCII value of active character 

Figure 6-2. Revolution Print Format Grid 

Print Formatting 33

7.0 Appendix 

7.1 Error Messages 

The IQ plus 355 indicator provides a number of error messages. When an error occurs, the message is shown on 

the indicator LED display. Error conditions can also be checked remotely by using the XE EDP command as 

described in Section 7.1.2. 

7.1.1 Displayed Error Messages 

The IQ plus 355 provides a number of front panel error messages to assist in problem diagnosis. Table 7-1 lists 

these messages and their meanings. 

Error Message Description Solution 

E A/D A/D physical error Call Rice Lake Weighing Systems (RLWS) Service. 

EEEROM EEPROM physical error 

EVIREE Virgin EEPROM Use TEST menu to perform DEFLT (restore defaults) procedure, then 

EPCKSM Parameter checksum error 

recalibrate load cells. 

EACKSM A/D calibration checksum error A/D converter requires recalibration. Call RLWS Service. 

EFCKSM Printer format checksum error Call RLWS Service. 

ELCKSM Load cell calibration checksum error Recalibrate load cells. 

EIDATA Internal RAM checksum error Call RLWS Service. 

E REF A/D reference error A/D converter requires recalibration. Call RLWS Service. 

Error Internal program error Check configuration. Run XE command (see Section 7.1.2 on 

page 35) to determine error type. 

Call RLWS Service if unable to clear error by cycling power or if error 

recurs. 

OVERFL Overflow error Weight value too large to be displayed. 

------ Gross > overload limit Gross value exceeds overload limit. Check configuration or signal 

input level. Overload can be caused by input signal > 45mV or 

common mode voltage > 950 mV. 

______ A/D underrange A/D reading < –4 mV. Check scale for binding or damage. 


Table 7-1. IQ plus 355 Error Messages

7.1.2 Using the XE EDP Command 

The XE EDP command can be used to remotely query 

the IQ plus 355 for the error conditions shown on the 

front panel. The XE command returns two 5-digit 

numbers in the format: 

xxxxx yyyyy 

where xxxxx contains a decimal representation of any 

existing error conditions as described in Table 7-2. 

If more than one error condition exists, the number 

returned is the sum of the values representing the error 

conditions. For example, if the XE command returns 

the number 1040, this value represents the sum of an 

A/D reference error (1024) and an A/D calibration 

checksum error (16). 

The second number returned (yyyyy) uses the same bit 

assignments as shown in Table 7-2 to indicate whether 

the test for the error condition was run. For example, 

the value yyyyy = 50815 represents the decimal 

equivalent of the binary value 1100 0110 0111 1111. 

Using the bit assignments in Table 7-2, this value 

indicates all tests were run. 

7.2 Status Messages 

Two EDP commands, P and ZZ, can be used to 

provide status about the indicator. These commands 

are described in the following sections. 

7.2.1 Using the P EDP Command 

The P EDP command returns the current displayed 

weight value to the EDP port, along with the units 

identifier. If the indicator is in an underrange or 

overload condition, the weight value is replaced with 

&&&&&& (overload) or :::::: (underrange). 

7.2.2 Using the ZZ EDP Command 

The ZZ EDP command can be used to remotely query 

which annunciators are currently displayed on the 

indicator front panel. The ZZ command returns the 

currently displayed weight and a decimal number 

representing the LED annunciators currently lit. The 

format of the returned data is: 

wwwwww uu zzz 

where wwwwww uu is the current displayed weight and 

units, zzz is the annunciator status value (see 

Table 7-3). If more than one annunciator is lit, the 

second number returned is the sum of the values 

representing the active annunciators. 

Error 

Code Description Binary Value 

0 No error 0000 0000 0000 0000 

1 EEPROM physical error 0000 0000 0000 0001 

2 Virgin EEPROM 0000 0000 0000 0010 

4 Parameter checksum error 0000 0000 0000 0100 

8 Load cell calibration 

checksum error 

0000 0000 0000 1000 

16 A/D calibration checksum 

error 

0000 0000 0001 0000 

32 Print format checksum error 0000 0000 0010 0000 

64 Internal RAM checksum error 0000 0000 0100 0000 

128 not assigned 0000 0000 1000 0000 

256 not assigned 0000 0001 0000 0000 

512 A/D physical error 0000 0010 0000 0000 

1024 A/D reference error 0000 0100 0000 0000 

2048 Non-maskable interrupt 

(NMI) error 

0000 1000 0000 0000 

4096 Stack overflow error 0001 0000 0000 0000 

8192 Zero division error 0010 0000 0000 0000 

16384 A/D underrange 0100 0000 0000 0000 

32768 Gross > overload limit 1000 0000 0000 0000 

Table 7-2. Error Codes Returned on XE Command 

For example, if the annunciator status value returned 

on the ZZ command is 145, the gross, standstill, and 

lb annunciators are lit: 145 represents the sum of the 

values for the standstill annunciator (128), gross mode 

annunciator (16), and the lb/primary units annunciator 

(1). 

Decimal 

Value Annunciator 

1 lb/primary units 

2 kg/secondary units 

4 oz 

8 g 

16 Gross 

32 Net 

64 Center of zero 

128 Standstill 

Table 7-3. Status Codes Returned on the ZZ Command 

Appendix 35

7.3 Continuous Output (Stream) Format 

Figure 7-1 shows the continuous output format sent to the IQ plus 355 EDP or printer port when the STREAM 

parameter (SERIAL menu) is set to either EDP or PRN. 

 

ASCII 02 

(decimal) 

Polarity: 

= Positive 

= Negative 

= Overload 

= Underrange 

Weight data: 7 digits, right-justified, with 

decimal point, leading zero suppression. 

Overload = ^^^^^^^ 

Underrange = ] ] ] ] ] ] ] 

Display overflow = OVERFL 


L = pounds 

K = kilogram 

T = ton 

G = grams 

O = ounces 

= none 

G = Gross 

N = Net 

Figure 7-1. Continuous Output Data Format 

 

or 

ASCII 13, 10 

(decimal) 

Status: 

= valid 

I = Invalid 

M = In motion 

O = Over/under range

7.4 ASCII Character Chart 

Use the decimal values for ASCII characters listed in 

Tables 7-4 and 7-5 when specifying print format 

strings on the IQ plus 355 PFORMT menu. The actual 

character printed depends on the character mapping 

used by the output device. 

The IQ plus 355 can send or receive any ASCII 

character value (decimal 0–255), but the indicator 

display is limited to numbers, upper-case, unaccented 

letters, and a few special characters. See Section 7.5 

on page 39 for information about the IQ plus 355 LED 

display. 

Control ASCII Dec Hex ASCII Dec Hex ASCII Dec Hex ASCII Dec Hex 

Ctrl-@ NUL 00 00 space 32 20 @ 64 40 ` 96 60 

Ctrl-A SOH 01 01 ! 33 21 A 65 41 a 97 61 

Ctrl-B STX 02 02 “ 34 22 B 66 42 b 98 62 

Ctrl-C ETX 03 03 # 35 23 C 67 43 c 99 63 

Ctrl-D EOT 04 04 $ 36 24 D 68 44 d 100 64 

Ctrl-E ENQ 05 05 % 37 25 E 69 45 e 101 65 

Ctrl-F ACK 06 06 & 38 26 F 70 46 f 102 66 

Ctrl-G BEL 07 07 ’ 39 27 G 71 47 g 103 67 

Ctrl-H BS 08 08 ( 40 28 H 72 48 h 104 68 

Ctrl-I HT 09 09 ) 41 29 I 73 49 i 105 69 

Ctrl-J LF 10 0A * 42 2A J 74 4A j 106 6A 

Ctrl-K VT 11 0B + 43 2B K 75 4B k 107 6B 

Ctrl-L FF 12 0C , 44 2C L 76 4C l 108 6C 

Ctrl-M CR 13 0D - 45 2D M 77 4D m 109 6D 

Ctrl-N SO 14 0E . 46 2E N 78 4E n 110 6E 

Ctrl-O SI 15 0F / 47 2F O 79 4F o 111 6F 

Ctrl-P DLE 16 10 0 48 30 P 80 50 p 112 70 

Ctrl-Q DC1 17 11 1 49 31 Q 81 51 q 113 71 

Ctrl-R DC2 18 12 2 50 32 R 82 52 r 114 72 

Ctrl-S DC3 19 13 3 51 33 S 83 53 s 115 73 

Ctrl-T DC4 20 14 4 52 34 T 84 54 t 116 74 

Ctrl-U NAK 21 15 5 53 35 U 85 55 u 117 75 

Ctrl-V SYN 22 16 6 54 36 V 86 56 v 118 76 

Ctrl-W ETB 23 17 7 55 37 W 87 57 w 119 77 

Ctrl-X CAN 24 18 8 56 38 X 88 58 x 120 78 

Ctrl-Y EM 25 19 9 57 39 Y 89 59 y 121 79 

Ctrl-Z SUB 26 1A : 58 3A Z 90 5A z 122 7A 

Ctrl-[ ESC 27 1B ; 59 3B [ 91 5B { 123 7B 

Ctrl-\ FS 28 1C < 60 3C \ 92 5C | 124 7C 

Ctrl-] GS 29 1D = 61 3D ] 93 5D } 125 7D 

Ctrl-^ RS 30 1E > 62 3E ^ 94 5E ~ 126 7E 

Ctrl-_ US 31 1F ? 63 3F _ 95 5F DEL 127 7F 

Table 7-4. ASCII Character Chart (Part 1) 

Appendix 37

ASCII Dec Hex ASCII Dec Hex ASCII Dec Hex ASCII Dec Hex 

Ç 128 80 á 160 A0 192 C0 α 224 E0 

ü 129 81 í 161 A1 193 C1 β 225 E1 

é 130 82 ó 162 A2 194 C2 Γ 226 E2 

â 131 83 ú 163 A3 195 C3 π 227 E3 

ä 132 84 ñ 164 A4 196 C4 Σ 228 E4 

à 133 85 Ñ 165 A5 197 C5 σ 229 E5 

å 134 86 ª 166 A6 198 C6 µ 230 E6 

ç 135 87 º 167 A7 199 C7 τ 231 E7 

ê 136 88 ¿ 168 A8 200 C8 Φ 232 E8 

ë 137 89 169 A9 201 C9 Θ 233 E9 

è 138 8A ¬ 170 AA 202 CA Ω 234 EA 

ï 139 8B 1/2 171 AB 203 CB δ 235 EB 

î 140 8C 1/4 172 AC 204 CC ∞ 236 EC 

ì 141 8D ¡ 173 AD 205 CD φ 237 ED 

Ä 142 8E « 174 AE 206 CE ∈ 238 EE 

Å 143 8F » 175 AF 207 CF ∩ 239 EF 

É 144 90 176 B0 208 D0 ≡ 240 F0 

æ 145 91 177 B1 209 D1 ± 241 F1 

Æ 146 92 178 B2 210 D2 ≥ 242 F2 

ô 147 93 179 B3 211 D3 ≤ 243 F3 

ö 148 94 180 B4 212 D4 ⌠ 244 F4 

ò 149 95 181 B5 213 D5 ⌡ 245 F5 

û 150 96 182 B6 214 D6 ÷ 246 F6 

ù 151 97 183 B7 215 D7 ≈ 247 F7 

ÿ 152 98 184 B8 216 D8 ° 248 F8 

Ö 153 99 185 B9 217 D9 • 249 F9 

Ü 154 9A 186 BA 218 DA 250 FA 

¢ 155 9B 187 BB 219 DB 251 FB 

£ 156 9C 188 BC 220 DC 252 FC 

¥ 157 9D 189 BD 221 DD 2 253 FD 

Pts 158 9E 190 BE 222 DE 254 FE 

ƒ 159 9F 191 BF 223 DF 255 FF 


Table 7-5. ASCII Character Chart (Part 2)

7.5 Front Panel Display Characters 

Figure 7-2 shows the 7-segment LED character set used to display alphanumeric characters on the IQ plus 355 

front panel. 

% 

& 

’ 

( 

) 

* 

+ 

, 

- 

. . 

/ 

0 

1 

2 

3 

4 

5 

6 

7 

8 

9 

: 

; 

< 

= 

> 

? 

@ 

A 

B 

C 

D 

Figure 7-2. IQ plus 355 Display Characters 

E 

F 

G 

H 

I 

J 

K 

L 

M 

N 

O 

P 

Q 

R 

S 

T 

U 

V 

W 

X 

Y 

Z 

[ 

\ 

Appendix 39

7.6 Conversion Factors for Secondary 

Units 

The IQ plus 355 has the capability to mathematically 

convert a weight into many different types of units and 

instantly display those results with a press of the 

UNITS key. 

Secondary units can be specified on the FORMAT 

menu using the SECNDR parameter, or by using EDP 

commands. 

• To configure secondary units using the front 

panel menus, use the Table 7-6 to find the 

conversion multiplier for the MULT 

parameter. For example, if the primary unit is 

pounds and the secondary unit is short tons, 

set the MULT parameter to 0.000500. 

You must use the MULEXP parameter to set 

the decimal point position. For example, if the 

primary unit is ounces and the secondary unit 

is grams, the conversion factor shown in 

Table 7-6 is 28.3495. To enter this value using 

the menus, first enter 283495 for the MULT 

parameter, then use the MULEXP parameter 

to adjust the decimal point to 28.3495. 

• To configure secondary units using EDP 

commands, use the Table 7-6 to find the 

conversion multiplier for the SEC.MULT 

command. For example, if the primary unit is 

pounds and the secondary unit is short tons, 

send the EDP command SEC.MULT= 

0.0005 to set the multiplier for the 

secondary units. 

• Long tons and grains units listed in Table 7-6 

cannot be directly specified as primary or 

secondary units on the IQ plus 355 indicator. 

For these or other unlisted units of weight, 

specify NONE on the UNITS parameter. 

NOTE: Ensure that the secondary decimal point 

position is set appropriately for the scale capacity in 

the secondary units. If the converted value requires 

more digits than are available, the indicator will 

display an overflow message (OVERFL). 

For example, if the primary units are short tons, 

secondary units are pounds, and the secondary 

decimal point is set to 8888.88, the indicator will 

overflow if 5 tons or more are applied to the scale. 

With 5 tons applied, and a conversion factor of 2000, 

the secondary units display needs five digits to the left 

of the decimal point to display the 10000 lb secondary 

units value. 


Primary Unit x Multiplier Secondary Unit 

grains 0.064799 grams 

0.002286 ounces 

0.000143 pounds 

0.000065 kilograms 

ounces 437.500 grains 

28.3495 grams 

0.06250 pounds 


pounds 7000.00 grains 

453.592 grams 

16.0000 ounces 


0.000500 short tons 

0.000446 long tons 

0.000453 metric tons 

short tons 2000.00 pounds 




grams 15.4324 grains 

0.035274 ounces 

0.002205 pounds 


kilograms 15432.4 grains 

35.2740 ounces 

1000.00 grams 

2.20462 pounds 




metric tons 2204.62 pounds 




long tons 2240.00 pounds 




Table 7-6. Conversion Factors

7.7 Digital Filtering 

The IQ plus 355 uses averaged digital filtering to reduce the effect of vibration on weight readings. Adjustable 

threshold and sensitivity functions allow quick settling by suspending filter averaging, allowing the weight 

reading to jump to the new value. Figure 7-3 shows the digital filter parameters on the CONFIG menu. 

DIGFL1 

2 

4 

8 

16 

32 

64 

1 

DIGFL2 

Figure 7-3. Digital Filtering Parameters on the Configuration (CONFIG) Menu 

7.7.1 DIGFLx Parameters 

The first three digital filtering parameters, DIGFL1, 

DIGFL2, and DIGFL3, are configurable filter stages 

that control the effect of a single A/D reading on the 

displayed weight. The value assigned to each 

parameter sets the number of readings received from 

the preceding filter stage before averaging (see 

Figure 7-4). 

The overall filtering effect can be expressed by adding 

the values assigned to the three filter stages: 

DIGFL1 + DIGFL2 + DIGFL3 

For example, if the filters are configured as 

DIGFL1=4, DIGFL2=8, DIGFL3=8, the overall 

filtering effect is 20 (4 + 8 + 8). With this 

configuration, each A/D reading has a 1-in-20 effect 

on the displayed weight value. Setting the filters to 1 

effectively disables digital filtering. 

2 

4 

8 

16 

32 

64 

1 

DIGFL3 

2 

4 

8 

16 

32 

64 

1 

DFSENS DFTHRH 

8OUT 

16OUT 

32OUT 

64OUT 

128OUT 

2OUT 

4OUT 

DIGFL1=n1 DIGFL2=n2 DIGFL3=n3 

n1 

A/D Readings 

1st Stage 

Filter Average 

n2 

1st Stage 

Filter Averages 

2nd Stage 


n3 

2nd Stage 

Filter Averages 

3rd Stage 


Figure 7-4. Flow Diagram for IQ plus 355 Digital Filters 

NONE 

2DD 

5DD 

10DD 

20DD 

50DD 

100DD 

200DD 

250DD 

Displayed 

Value 

7.7.2 DFSENS and DFTHRH Parameters 

The three digital filters can be used by themselves to 

eliminate vibration effects, but heavy filtering also 

increases settling time. The DFSENS (digital filter 

sensitivity) and DFTHRH (digital filter threshold) 

parameters can be used to temporarily override filter 

averaging and improve settling time: 

• DFSENS specifies the number of consecutive 

scale readings that must fall outside the filter 

threshold (DFTHRH) before digital filtering 

is suspended. 

• DFTHRH sets a threshold value, in display 

divisions. When a specified number of 

consecutive scale readings (DFSENS) fall 

outside of this threshold, digital filtering is 

suspended. Set DFTHRH to NONE to turn off 

the filter override. 

Appendix 41

7.7.3 Setting the Digital Filter Parameters 

Fine-tuning the digital filter parameters greatly 

improves indicator performance in heavy-vibration 

environments. Use the following procedure to 

determine vibration effects on the scale and optimize 

the digital filtering configuration. 

1. In setup mode, set all three digital filters 

(DIGFL1, DIGFL2, DIGFL3) to 1. Set 

DFTHRH to NONE. Return indicator to 

normal mode. 

2. Remove all weight from the scale, then watch 

the indicator display to determine the 

magnitude of vibration effects on the scale. 

Record the weight below which all but a few 

readings fall. This value is used to calculate 

the DFTHRH parameter value in Step 4. 

For example, if a heavy-capacity scale 

produces vibration-related readings of up to 

50 lb, with occasional spikes to 75 lb, record 

50 lb as the threshold weight value. 

3. Place the indicator in setup mode and set the 

digital filters (DIGFLx) to eliminate the 

7.8 Analog Output Calibration 

The following calibration procedure requires a 

multimeter to measure voltage or current output from 

the analog output module. If the option is not already 

installed, see Section 2.4 on page 7. 


SOURCE 

GROSS 

NET 

CALIBR 

1. Enter setup mode and go to the ALGOUT 

menu (see Figure 7-5). 

• Set OFFSET to 0% for 0–10 V output, 

20% for 4–20 mA output 

• Set MIN to lowest weight value to be 

tracked by the analog output 

• Set MAX to highest weight value to be 

tracked by the analog output 

2. Connect multimeter to analog output: 

• For voltage output, connect voltmeter 

leads to pins 3 and 4 

• For current output, connect ammeter 

leads to pins 1 and 2 


SERIAL 

OFFSET ERRACT 

0% 

20% 

FULLSC 

HOLD 

ZEROSC 


MIN 

000000 

number 

Figure 7-5. Analog Output Menu 

vibration effects on the scale. (Leave 

DFTHRH set to NONE.) Reconfigure as 

necessary to find the lowest effective values 

for the DIGFLx parameters. 

4. With optimum values assigned to the DIGFLx 

parameters, calculate the DFTHRH parameter 

value by converting the weight value recorded 

in Step 2 to display divisions: 

threshold_weight_value / DSPDIV 

In the example in Step 2, with a threshold 

weight value of 50 lb and a display division 

value of 5lb: 50 / 5lb = 10DD. DFTHRH 

should be set to 10DD for this example. 

5. Finally, set the DFSENS parameter high 

enough to ignore transient peaks. Longer 

transients (typically caused by lower vibration 

frequencies) will cause more consecutive 

out-of-band readings, so DFSENS should be 

set higher to counter low frequency transients. 

Reconfigure as necessary to find the lowest 

effective value for the DFSENS parameter. 

NOTE: The analog output must be calibrated after the 

indicator itself has been configured (Section 3.0) and 

calibrated (Section 4.0). 

DIG IN 


MAX TWZERO 

10000 

number 

TWSPAN 

3. Adjust zero calibration: Scroll to the 

TWZERO parameter. Check voltage or 

current reading on multimeter. Press and hold 

or to adjust the zero value up or down. 

4. Adjust span calibration: Scroll to the 

TWSPAN parameter. Check voltage or 

current reading on multimeter. Press and hold 

or to adjust the span value up or down. 

5. Final zero calibration: Return to the 

TWZERO parameter and verify that the zero 

calibration has not drifted. Press and hold 

or to re-adjust the zero value as required. 

6. Return to normal mode. Analog output 

function can be verified using test weights.

7.9 Test Mode 

In addition to normal and setup modes, test mode 

provides a number of diagnostic functions for the IQ 

plus 355, including: 

• Display raw A/D count 

• Display digital input states 

• Reset configuration parameters to default 

values 

• Transmit test character (“U”) from serial port 

• Display characters received by serial port 

• Set analog output state to zero or full scale 

Figure 7-6. Test Menu 

Figure 7-7. Front Panel Key Functions in Test Mode 

To enter test mode, press and hold the setup switch 

until the front panel display shows the word TEST. 

After about three seconds, the test mode display 

automatically shifts to the first test menu function, 

A/DTST. 

Figure 7-6 shows the Test Menu structure; Figure 7-7 

shows the front panel key functions in test mode. Note 

that, because the Test Menu functions are all on a 

single menu level, the GROSS/NET ( ) key has no 

function. Press the ZERO ( ) key to exit test mode. 

Table 7-7 on page 44 summarizes the test menu 

functions. 

TEST A/DTST 

D/I 1 D/I 2 AOUT=0 AOUTFS 

DEFLT XMT U ECHO R 


NET 

B/N Units 

EXIT 

Not used 

ENTER 

Move LEFT 

TEST MODE KEY FUNCTIONS 

Move RIGHT 

Appendix 43

TEST Menu 

Function Description 

A/DTST Display A/D test 

Press and hold Enter key to display raw count from A/D converter. 

D/I 1 Display digital input 1 

Press and hold Enter key to show status of DIGIN1 (DI1=HI or DI1=LO). 

D/I 2 Display digital input 2 

Press and hold Enter key to show status of DIGIN2 (DI2=HI or DI2=LO). 

AOUT=0 Set analog output to zero 

Press and hold Enter key to set analog output to its zero value. 

AOUTFS Set analog output to full scale 

Press and hold Enter key to set analog output to its full scale value. 

DEFLT Default parameters 

Press setup switch and Enter key at the same time to reset configuration and calibration parameters to factory 

default values. Load cells must be recalibrated before using the indicator (see Section 4.0 on page 24). 

XMT U Transmit “U” 

Press and hold Enter key to send ASCII “U” characters (decimal 85) from the serial port. 

ECHO R Echo received characters 

Press and hold Enter key to view characters received at serial port. 

NOTE: IQ plus 355 display shows lower-case characters as blanks. 

7.10 Software Revision History 

For a complete description of recent software revisions, visit our web site at www.rlws.com. 

The following list summarizes principal revision software changes: 

Version 1.10 

• Entering setup mode now clears any tare value in the system. 

• The configured end-of-line delay (EOLDLY) now functions in both demand and continuous mode. 

• A/D gain (ADGAIN) and A/D offset (ADOFFS) functions removed from TEST menu. 

Version 1.12 

• New SMPRAT parameter on the CONFIG menu provides selectable A/D conversion rate ranging from 

3.75–30 Hz. 

• Default value for REGULAT parameter (on PROGRM menu) changed to NTEP. 

Version 1.15 

• This parameter added in SERIAL menu under EDP port (EDP.ECHO=On/Off) to enable or disable 

echoing of serial commands sent to indicator. 

Version 1.16 

• This version corrects an issue introduced in Version 1.15 where the primary unit with a fixed zero was 

divided by 10 when displaying secondary units. 


Table 7-7. Test Menu Functions

7.11 Specifications 

Power 

Line Voltages 115 or 230 VAC 

Frequency 50 or 60 Hz 

Power Consumption 70 mA @ 115 VAC (8W) 

35 mA @ 230 VAC (8W) 

Fusing 

115 VAC 2 x 200 mA TR5 subminiature fuses 

Wickmann Time-Lag 19374 Series 

UL Listed, CSA Certified 

230 VAC 2 x 100 mA TR5 subminiature fuses 

Wickmann Time-Lag 19372 Series 

UL Recognized, VDE Approved 

Analog Specifications 

Full Scale Input Signal Up to 45 mV 

Excitation Voltage 10 ± 0.5 VDC, 

8 x 350Ω or 16 x 700Ω load cells 

Sense Amplifier Differential amplifier with 

4- and 6-wire sensing 

Analog Signal 

Input Range 0.6 mV/V – 4.5 mV/V 

Analog Signal 

Sensitivity 0.3 µV/graduation minimum, 

1.5 µV/grad recommended 

Input Impedance 200 MΩ, typical 

Noise (ref to input) 0.3 µV p-p with digital filters at 4-4-4 

Internal Resolution 308 000 counts 

Display Resolution 100 000 dd 

Measurement Rate Up to 30 measurements/sec 

Input Sensitivity 150 nV per internal count 

System Linearity Within 0.01% of full scale 

Zero Stability 150 nV/°C, maximum 

Span Stability 3.5 ppm/°C, maximum 

Calibration Method Software, constants stored in 

EEPROM 

Common Mode 

Voltage –0.15 to +0.95 V, referred to earth 

Common Mode 

Rejection 130 dB minimum @ 50 or 60 Hz 

Normal Mode 

Rejection 90 dB minimum @ 50 or 60 Hz 

Input Overload ± 12 V continuous, static discharge 

protected 

RFI Protection Signal, excitation, and sense lines 

protected by capacitor bypass 

Analog Output Optional: fully isolated, voltage or current 

output,14-bit resolution. 

Voltage output: 0 –10 VDC 

Load resistance:1KΩ minimum 

Current output: 4–20 mA 

External loop resistance: 500Ω maximum 

Digital Specifications 

Microcomputer Phillips 80C51XA-G49 main processor @ 

9.8304 MHz 

Digital Inputs 2 inputs, TTL or switch closure, 

active-low 

Digital Filters 3 filters, software selectable 

Serial Communications 

EDP Port Full duplex RS-232 

Printer Port Output-only RS-232 or active 20 mA 

current loop 

Both Ports 9600, 4800, 2400, 1200, 600, 300 bps; 

7 or 8 data bits; even, odd, or no parity 

Operator Interface 

Display 6-digit LED display. 7-segment, 0.8 in 

(20 mm) digits 

LED annunciators Gross, net, center of zero, standstill, 

lb/primary units, kg/secondary units, 

oz, g 

Keyboard 5-key flat membrane panel 

Environmental 

Operating Temperature–10 to +40°C (legal); 

–10 to +50°C (industrial) 

Storage Temperature –25 to +70°C 

Humidity 0–95% relative humidity 

Altitude 2000 m (6500 ft) maximum 

Enclosure 

Enclosure Dimensions 9.5 in x 6 in x 2.75 in 

24 cm x 15 cm x 7 cm 

Weight 2.8 Kg (6.1 lb) 

Rating/Material UL Type 4X 

Certifications and Approvals 

• NATIONAL CONFERENCE • 

O N W E I G H T S 

A N D M E A S U R E S 

NTEP 

CoC Number 97-130A1 

Accuracy Class III/III L 

n max : 10 000 

Measurement Canada 

Approval AM-5213 

Accuracy Class III/III HD 

n max : 10 000 

OIML 

R76-2 Test Certificate TC6008 

Accuracy Class III n max : 3 000 

Appendix 45

IQ plus 355 Limited Warranty 

Rice Lake Weighing Systems (RLWS) warrants that all RLWS equipment and systems properly installed by a 

Distributor or Original Equipment Manufacturer (OEM) will operate per written specifications as confirmed by 

the Distributor/OEM and accepted by RLWS. All systems and components are warranted against defects in 

materials and workmanship for two years. 

RLWS warrants that the equipment sold hereunder will conform to the current written specifications authorized 

by RLWS. RLWS warrants the equipment against faulty workmanship and defective materials. If any equipment 

fails to conform to these warranties, RLWS will, at its option, repair or replace such goods returned within the 

warranty period subject to the following conditions: 

• Upon discovery by Buyer of such nonconformity, RLWS will be given prompt written notice with a 

detailed explanation of the alleged deficiencies. 

• Individual electronic components returned to RLWS for warranty purposes must be packaged to 

prevent electrostatic discharge (ESD) damage in shipment. Packaging requirements are listed in a 

publication, Protecting Your Components From Static Damage in Shipment, available from RLWS 

Equipment Return Department. 

• Examination of such equipment by RLWS confirms that the nonconformity actually exists, and was 

not caused by accident, misuse, neglect, alteration, improper installation, improper repair or 

improper testing; RLWS shall be the sole judge of all alleged non-conformities. 

• Such equipment has not been modified, altered, or changed by any person other than RLWS or its 

duly authorized repair agents. 

• RLWS will have a reasonable time to repair or replace the defective equipment. Buyer is responsible 

for shipping charges both ways. 

• In no event will RLWS be responsible for travel time or on-location repairs, including assembly or 

disassembly of equipment, nor will RLWS be liable for the cost of any repairs made by others. 

THESE WARRANTIES EXCLUDE ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WITHOUT 

LIMITATION WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. NEITHER 

RLWS NOR DISTRIBUTOR WILL, IN ANY EVENT, BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. 

RLWS AND BUYER AGREE THAT RLWS’S SOLE AND EXCLUSIVE LIABILITY HEREUNDER IS LIMITED TO 

REPAIR OR REPLACEMENT OF SUCH GOODS. IN ACCEPTING THIS WARRANTY, THE BUYER WAIVES ANY AND 

ALL OTHER CLAIMS TO WARRANTY. 

SHOULD THE SELLER BE OTHER THAN RLWS, THE BUYER AGREES TO LOOK ONLY TO THE SELLER FOR 

WARRANTY CLAIMS. 

NO TERMS, CONDITIONS, UNDERSTANDING, OR AGREEMENTS PURPORTING TO MODIFY THE TERMS OF THIS 

WARRANTY SHALL HAVE ANY LEGAL EFFECT UNLESS MADE IN WRITING AND SIGNED BY A CORPORATE 

OFFICER OF RLWS AND THE BUYER. 

© 2002 Rice Lake Weighing Systems, Inc. Rice Lake, WI USA. All Rights Reserved. 

RICE LAKE WEIGHING SYSTEMS • 230 WEST COLEMAN STREET • RICE LAKE, WISCONSIN 54868 • USA 

46 IQ plus 355 Installation Manual

IQ plus® 355 - Cisco-Eagle, Inc.

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