Rice Lake 120 User manual

120
Extended Digital Weight Indicator
Version 2.0
Technical Manual
PN 76699 Rev CDecember 1, 2023

© Rice Lake Weighing Systems. All rights reserved.
Rice Lake Weighing Systems® is a registered trademark of
Rice Lake Weighing Systems.
All other brand or product names within this publication are trademarks or
registered trademarks of their respective companies.
All information contained within this publication is, to the best of our knowledge, complete and
accurate at the time of publication. Rice Lake Weighing Systems reserves the right to make
changes to the technology, features, specifications and design of the equipment without notice.
The most current version of this publication, software, firmware and all other product
updates can be found on our website:
www.ricelake.com

Revision History
© Rice Lake Weighing Systems ● All Rights Reserved 3
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
Revision History
This section tracks and describes manual revisions for awareness of major updates.
Revision Date Description
CDecember 1, 2023 Established revision history; updated certifications and approvals
Table i. Revision Letter History

120 Digital Weight Indicator
4 Visit our website www.RiceLake.com
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.3 Operating Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Front Panel Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 LED Annunciators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.6 Indicator Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6.1 Weighing Mode Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.6.2 Panel Mode Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.1 Unpacking and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Enclosure and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.3.1 Load Cells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.3.2 Enclosure Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.3.3 Replacement Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.0 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Configuration Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.1 Revolution® Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1.2 EDP Command Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.1.3 Front Panel Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.2 Menu Structures and Parameter Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.1 Configuration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.2 Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.3 Calibration Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.4 Serial Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.5 Program Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.2.6 Print Format Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.7 Time Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.2.8 Date Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.9 Version Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
4.0 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.1 Front Panel Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.2 EDP Command Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1.3 The RS Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1.4 Parameter Setting Commands. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.2 Saving and Transferring Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.1 Saving Indicator Data to a Personal Computer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.2.2 Downloading Configuration Data from PC to Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Contents

Contents
© Rice Lake Weighing Systems ● All Rights Reserved 5
Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
6.0 Print Formatting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.1 Print Formatting Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2 Customizing Print Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2.1 Using the EDP Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.2.2 Using the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.0 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.1 Error Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.2 Continuous Output (Stream) Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
7.3 Front Panel Display Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
7.4 ASCII Character Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
7.5 Conversion Factors for Secondary Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.6 Digital Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.6.1 DIGFLx Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.6.2 DFSENS and DFTHRH Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.6.3 Setting the Digital Filter Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.7 Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
8.0 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

120 Digital Weight Indicator
6 Visit our website www.RiceLake.com
Rice Lake continually offers web-based video training on a growing selection
of product-related topics at no cost. Visit www.ricelake.com/webinars

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 7
1.0 Introduction
This manual is intended for use by service technicians responsible for installing and servicing 120 Digital Weight Indicator
Technical Manual digital weight indicators. This manual applies to indicators using Version 2.02 of the indicator software.
Configuration and calibration of the indicator can be accomplished using the indicator front panel keys, the EDP command set,
or Version 3.0 or later of the Revolution® configuration utility. See Section 3.1 on page 14 for information about configuration
methods. The Operator Card included with this manual provides basic operating instructions for users of the indicator. Please
leave the Operator Card with the indicator when installation and configuration are complete.
Manuals are available from Rice Lake Weighing Systems at www.ricelake.com/manuals
Warranty information is available at www.ricelake.com/warranties
1.1 Overview
The 120 Indicator is a single-channel digital weight indicator housed in a durable plastic 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 four 350or eight 700 load cells
• Supports 4- and 6-wire load cell connections
• Electronic data processing (EDP) port for full duplex, RS-232 communications at up to 38400 bps
• Printer port for output-only RS-232 and 20 mA current loop communications at up to 9600 bps
The 120 Indicator is NTEP-certified for Classes III and III L at 6,000 divisions. See Section 8.0 on page 40 for detailed
specifications.
1.2 Safety
Safety Definitions:
DANGER: Indicates an imminently hazardous situation that, if not avoided, will result in death or serious injury. Includes
hazards that are exposed when guards are removed.
WARNING: Indicates a potentially hazardous situation that, if not avoided, could result in serious injury or death. Includes
hazards that are exposed when guards are removed.
CAUTION: Indicates a potentially hazardous situation that, if not avoided, could result in minor or moderate injury.
IMPORTANT: Indicates information about procedures that, if not observed, could result in damage to equipment or
corruption to and loss of data.
General Safety
Do not operate or work on this equipment unless this manual has been read and all instructions are understood.
Failure to follow the instructions or heed the warnings could result in injury or death. Contact any Rice Lake
Weighing Systems dealer for replacement manuals.
WARNING
Failure to heed could result in serious injury or death.
Some procedures described in this manual require work inside the indicator enclosure. These procedures are to be performed by
qualified service personnel only.
DO NOT allow minors (children) or inexperienced persons to operate this unit.
DO NOT operate without the enclosure completely assembled.
DO NOT use for purposes other than weight taking.
DO NOT place fingers into slots or possible pinch points.
DO NOT use this product if any of the components are cracked.
DO NOT exceed the rated specification of the unit.
DO NOT make alterations or modifications to the unit.
DO NOT remove or obscure warning labels.
DO NOT submerge.
Before opening the unit, ensure the power cord is disconnected from the outlet.
i

120 Digital Weight Indicator
8 Visit our website www.RiceLake.com
1.3 Operating Modes
The 120 Indicator supports the following modes of operation:
Normal (weighing) mode
Normal mode is the weighing mode of the indicator. The indicator displays gross or net weights as required, using the LED
annunciators described in Section 1.5 on page 9 to indicate scale status and the type of weight value displayed. When
configuration is complete and a legal seal is affixed to the back of the indicator, this is the only mode the 120 Indicator can
operate in. See Section 1.6.1 on page 10 for more information about normal mode operations.
Panel mode
Panel mode allows the time, date, consecutive number, and consecutive number start-up value to be set without entering
configuration mode. To enter panel mode, press and hold the GROSS/NET key until the TIME menu is shown. See
Section 1.6.2 on page 10 for more information about panel mode.
Configuration mode
Most of the procedures described in this manual require the indicator to be in configuration mode, including configuration and
calibration.
To enter configuration mode, remove the large fillister head screw from the enclosure backplate. Insert non-conductive 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, test mode is entered using the setup switch. See Section 7.7 on page 39
for more information about entering and using test mode.
1.4 Front Panel Keypad
Figure 1-1 shows the 120 Indicator keypad and LED annunciators.The symbols shown under the keys (representing up, down,
enter, left, right) describe the key functions assigned in configuration and panel modes. In these modes, the keys are used to
navigate through menus, select digits within numeric values, and increment/decrement values. See Section 3.1.3 on page 15
for information about using the front panel keys in configuration mode.
Figure 1-1. 120 Indicator Front Panel
kg
l b g
oz Gr Nt
ZERO
GROSS
NET
B/N
TARE
T
UNITS
Units
PRINT

Introduction
© Rice Lake Weighing Systems ● All Rights Reserved 9
1.5 LED Annunciators
The 120 Indicator display uses eight LED annunciators to provide additional information about the value being displayed:
• Gr (gross) and Nt (net) annunciators are lit to show whether the displayed weight is a gross or net weight.
• Center of zero ( ): Gross weight is within ±0.25 graduations of zero. This annunciator lights when the scale is
zeroed.
• 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.
Table 1-1 on page 9 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 on page 18 for more information about configuring primary and secondary display units.
Primary Unit
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
gg / lb g / kg g / oz g / g g / kg
tn lb / kg lb / kg lb / oz lb / g lb / lb lb / kg lb / kg
tlb / 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
0

120 Digital Weight Indicator
10 Visit our website www.RiceLake.com
1.6 Indicator Operations
Use the following instruction for basic operation of the 120 Indicator.
1.6.1 Weighing Mode Operations
Operation instructions when in the weighing mode.
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.
Toggle Units
Press the UNITS key to switch between primary and secondary units. The units LED to the right of the display is lit.
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.
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.
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.
Print Ticket
1. Wait for the standstill annunciator ( ).
2. Press the PRINT key to send data to the serial port.
1.6.2 Panel Mode Operations
The following operations are available by placing the indicator in panel mode:
• Set time
• Set date
• Set consecutive number
• Set consecutive number start-up value
To enter panel mode, press and hold the GROSS/NET key until the TIME menu is displayed. Use the navigation keys to move
around the menu; to change a value, use the navigation keys to select the digit and increment or decrement its value. Press the
Enter (TARE) key to set the value and return to the menu level above. Figure 1-2 shows the structure of the panel mode menu.
NOTE: To enter a 2 digit month, the lower digit must be a “1” then the upper digit is incremented to “1”. The lower digit can
then be changed to 0, 1 or 2 as required.
Figure 1-2. Panel Mode Menu Structure
0
TIME
SHOW
hh.mm.ss
HOUR
hh
MINUTE
mm
SECOND
ss
DATE
SHOW
yy.mm.dd
YEAR
yy
MONTH
mm
DAY
dd
CONSNU
number
CONSTU
number

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 11
2.0 Installation
This section provides information for connecting load cell and serial communications cables to the 120 Indicator.
2.1 Unpacking and Assembly
Immediately after unpacking, visually inspect the 120 Indicator 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 and identification labels
• Load cell connector (PN 82505)
• 9V power supply adapter (PN 78611 for 115 VAC units, PN 78612 for 230 VAC units)
2.2 Enclosure and Connectors
The back of the 120 Indicator enclosure provides a 3-pin power connection, 9-pin D-sub connector for communications, and an
available 6-pin connector or load cell cord grip connector for load cell connection (see Figure 2-1).
The setup switch, used for placing the indicator into configuration mode, is located in the recess on the underside of the
enclosure. The setup switch is protected by a cover plate and secured with a fillister head screw (not shown in Figure 2-1).
Figure 2-1. 120 Indicator Enclosure (back view)
2.3 Serial Communications
The serial communications cable attaches to the male D-Sub connector, Port 1 (see Figure 2-1). Port 1 provides connections
for the EDP (Electronic Data Processing) port and the printer port. Table 2-1 shows the pin assignments for Port 1.
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 14 for configuration information.
SETUP
PORT 1 PORT 2
COMMUNICATIONS LOAD CELL
9VDC ADAPTER
SWITCH
Power
Connection Load Cell Connection
shown with 6-pin
Connector (Port 2)
Load Cell Cord Grip
Available
Communications Port 1
Setup Switch

120 Digital Weight Indicator
12 Visit our website www.RiceLake.com
2.3.1 Load Cells
Load cell wires can be wired up one of two ways depending upon which indicator model is purchased. Refer to the 6-pin
connector instructions or the load cell cord grip plug instructions to connect to the load cell wires.
6-Pin Connector
The load cell or junction box cable attaches to the round 6-pin connector, Port 2 (see Figure 2-1 on page 11). Table 2-2 shows
the pin assignments for Port 2.
Load Cell Cord Grip Plug
For models having the load cell cord grip, route cable through the load cell cord grip and tighten the cord grip. Next, remove
connector J1 from the CPU board which is located in the lower right side of the CPU board. The connector plugs into a header
on the board. Wire the load cell cable from the load cell or junction box to connector J1 as shown in Table 2-3.
Port 1 Pin Port Function
1 Printer RS-232 TxD
2 EDP RS-232 TxD
3 RS-232 RxD
4 — not used
5 EDP/Printer RS-232 Ground / –20 mA OUT
6 N/C not used
7
8
9 Printer +20 mA OUT
Table 2-1. Serial Connector (Port 1) Pin Assignments
Port 2 Pin Function
1 +SIG
2 +EXC
3 +SENSE *
4 –EXC
5 –SENSE *
6 –SIG
* For 4-wire connections, short pin 2 to pin 3, pin 4 to pin 5.
Table 2-2. Load Cell Connector (Port 2) Pin Assignments
J1 Function
1 –EXC
2 –SEN
3 –SIG
4 +SIG
5 +SEN
6 +EXC
Table 2-3. J1 Pin Assignments with Load Cell Cord Grip

Installation
© Rice Lake Weighing Systems ● All Rights Reserved 13
2.3.2 Enclosure Disassembly
CAUTION: Use a wrist strap to ground yourself and protect components from electrostatic discharge (ESD) when working
inside the indicator enclosure.
If the indicator enclosure must be opened for maintenance, do the following:
1. Disconnect power to the unit. Remove tilt stand.
2. Remove two fillister head screws and the setup switch cover plate from back of enclosure.
3. Loosen self-tapping screw at top center of back of enclosure.
4. Lift up the forward edge of the rubber feet on bottom of enclosure for access to two additional self-tapping screws.
Loosen both screws.
5. Press down on top of back half of the enclosure to release tabs. Open enclosure by separating the housing at the top
of the indicator. (CPU board is mounted to front half of enclosure; power, communications, and load cell connections
all connect to the bottom of the CPU board.)
6. Reverse steps to reassemble enclosure.
2.3.3 Replacement Parts
Table 2-4 lists replacement parts for the 120 Indicator.
PN Description
78609 CPU Board
78610 Switch panel membrane
15799 9-pin socket for D-sub communications cable
15774 Shell for D-sub communications cable
83429 Setup switch cover plate
83430 Fillister head screw
83432 Self-tapping screw (enclosure)
83431 Rubber foot
83428 Tilt stand wing knob
78949 Optional wall-mount tilt stand
78611 9V power supply adapter for 115V units
78612 9V power supply adapter for 230V units
Table 2-4. Replacement Parts

120 Digital Weight Indicator
14 Visit our website www.RiceLake.com
3.0 Configuration
To configure the 120 Indicator, the indicator must be placed in setup mode.
The setup switch is accessed by removing the left fillister head screw on
underside of the enclosure and removing the rectangular switch cover
plate. 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 on page 16. 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 120 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 the EDP command set described in Section 5.0 on page 27 or by
using the Revolution configuration utility.
3.1.1 Revolution® Configuration
The Revolution configuration utility provides the preferred
method for configuring the 120 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.
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 (Version 3.1 or later) on an IBM-
compatible personal computer running Windows® 98 or
later. Minimum system requirements include a
processor speed of at least 166MHz, 32MB of memory
(64MB recommended, required for NT4, 2000, XP), and
at least 40MB of available hard disk space for
installation.
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.
SETUP SWITCH
FILLISTER-HEAD SCREW
Figure 3-1. Sample Revolution Configuration Display

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 15
3.1.2 EDP Command Configuration
The EDP command set can be used to configure the 120 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 120 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.
Four front panel keys are used as directional keys to navigate through the menus in setup mode. 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.
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.
NOTE: You must press to save the selected value. The 120 does not automatically save the last-displayed value.
To edit numerical values, press (rightmost digit will flash), then use the navigation keys to select the digit and to increment or
decrement the value (see Figure 3.2). When done, press again to save the edited value.
Figure 3-2. Editing Procedure for Numeric Values
Menu Menu Function
CONFIG Configuration Configure load cell sensitivity, grads, zero tracking, zero range, motion band, overload, sample rate, and digital fil-
tering parameters.
FORMAT Format Set format of primary and secondary units, display rate.
CALIBR Calibration Calibrate indicator. See Section 4.0 on page 26 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 on page 27 for more information.
TIME Time Display and set time
DATE Date Display and set date
VERSION Version Display installed software version number.
Table 3-1. 120 Indicator Menu Summary
When editing numeric values, press to allow numeric mode
change entry, then press or to change the digit selected.
Press or to increment or decrement the value of the flashing
selected digit.

120 Digital Weight Indicator
16 Visit our website www.RiceLake.com
3.2 Menu Structures and Parameter Descriptions
The following sections provide graphic representations of the 120 Indicator 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
Figure 3-3. Configuration Menu
GRADS
10000 OFF
1D
0.5D
3D
ZTRKBN ZRANGE
1.9%
100%
50D
2D
1D
3D
MOTBAN
10D
5D
20D
FS+2%
FS+9D
FS+1D
FS
OVRLOA
8
4
DIGFL1
64
32
number
DIGFL2 DIGFL3
8OUT
32OUT
16OUT
64OUT
DFSENS DFTHRH
1OUT
128OUT
2OUT
2DD
NONE
5DD
20DD
10DD
50DD
200DD
100DD
250DD
30HZ
7.5HZ
15HZ
3.75HZ
SMPRAT
OFF
1
2
4OUT
16
8
4
64
32
1
2
16
128 128
VERSDATETIME
PFORMT
SERIALCALIBRCONFIG FORMATPROGRM
8
4
64
32
1
2
16
128
0.1DD
0.2DD
1DD
0.5DD

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 17
Parameter Choices Description
Level 2 submenus
GRADS 10000
number
Graduations. Specifies the number of full scale graduations. The value entered must be in the range 1–100
000 and should be consistent with legal requirements and environmental limits on system resolution.
To calculate GRADS, use the formula, GRADS = Capacity / Display Divisions.
Display divisions for primary and secondary units are specified on the FORMAT menu.
ZTRKBN OFF
0.5D
1D
3D
Zero track band. Automatically zeros 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.
ZRANGE 1.9%
100%
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.
MOTBAN 1D
2D
3D
5D
10D
20D
50D
OFF
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.
OVRLOA FS+2%
FS+1D
FS+9D
FS
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.
SMPRAT 15HZ
7.5HZ
3.75HZ
30HZ
Sample rate. Selects measurement rate, in samples per second, of the analog-to-digital converter. Lower
sample rate values provide greater signal noise immunity.
DIGFL1
DIGFL2
DIGFL3
2
4
8
16
32
64
1
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 7.6 on page 38 for more information on digital filtering.
DFSENS 8OUT
16OUT
32OUT
64OUT
128OUT
2OUT
4OUT
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.
DFTHRH NONE
0.1DD
0.2DD
0.5DD
1DD
2DD
5DD
10DD
20DD
50DD
100DD
200DD
250DD
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.
Table 3-2. Configuration Menu Parameters

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3.2.2 Format Menu
Figure 3-4. Format Menu
Parameter Choices Description
Level 2 submenus
PRIMAR DECPNT
DSPDIV
UNITS
Specifies the decimal position, display divisions, and units used for the primary units. See Level 3 sub-
menu parameter descriptions.
SECNDR DECPNT
DSPDIV
UNITS
MULT
MULEXP
Specifies the decimal position, display divisions, units, and conversion multiplier used for the secondary
units. See Level 3 sub-menu parameter descriptions.
DSPRAT 250MS
500MS
750MS
1SEC
1500MS
2SEC
2500MS
3SEC
4SEC
6SEC
8SEC
Display rate. Sets the update rate for displayed values. Values are in milliseconds (MS) or seconds (SEC).
Table 3-3. Format Menu Parameters
DSPDIV MULTUNITSDECPNT
0.45359
1D
5D
2D
number
PRIMAR SECNDR
6SEC
4SEC
3SEC
2500MS
2SEC
1500MS
750MS
500MS
250MS
8SEC
DSPRAT
DSPDIV UNITSDECPNT
T
KG
1D
5D
2D
LB
8.88888
888888
88888.8
8888.88
888.888
88.8888
OZ
TN
NONE
G
KG
LB
MULEXP
1SEC
8.88888
888888
88888.8
8888.88
888.888
88.8888
dec_position
VERSDATETIME
PFORMT
SERIALCALIBRCONFIG FORMAT PROGRM
20D
10D
50D
20D
10D
50D T
OZ
TN
NONE
G

Configuration
© Rice Lake Weighing Systems ● All Rights Reserved 19
Level 3 submenus
Primary Units (PRIMAR Parameter)
DECPNT 888888
8.88888
88.8888
888.888
8888.88
88888.8
Decimal point location. Specifies the location of the decimal point or dummy zeroes in the primary unit dis-
play. Value should be consistent with local legal requirements.
DSPDIV 1D
2D
5D
10D
20D
50D
Display divisions. Selects the minimum division size for the primary units displayed weight.
UNITS LB
KG
OZ
TN
T
G
NONE
Specifies primary units for displayed and printed weight. Values are: LB=pound; KG=kilogram; OZ=ounce;
TN=short ton; T=metric ton; G=gram.
Secondary Units (SECNDR Parameter)
DECPNT 88888.8
888888
8.88888
88.8888
888.888
8888.88
Decimal point location. Determines the location of the decimal point or dummy zeros in the secondary unit
display.
DSPDIV 5D
10D
20D
50D
1D
2D
Display divisions. Selects the value of minimum division size of the displayed weight.
UNITS KG
OZ
TN
T
G
LB
NONE
Specifies secondary units for displayed and printed weight. Values are: KG=kilogram; OZ=ounce; TN=short
ton; T=metric ton; G=gram; LB=pound.
MULT 0.45359
number
Multiplier. Specifies the conversion factor by which the primary units are multiplied to obtain the secondary
units. The default is 0.45359, which is the conversion factor for changing pounds to kilograms. Use the
MULEXP parameter to shift the decimal position of the multiplier. See Section 7.5 on page 37 for a list of
multipliers.
To toggle between primary and secondary units, press the UNITS key.
MULEXP dec_position Multiplier decimal shift. Specifies a divisor used to shift the decimal position in the secondary units multiplier
value. Use the left and right arrow keys to shift the decimal point within the displayed MULT value.
Parameter Choices Description
Table 3-3. Format Menu Parameters (Continued)

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3.2.3 Calibration Menu
See Section 4.0 on page 26 for calibration procedures.
Figure 3-5. Calibration Menu
Parameter Choices Description
Level 2 submenus
WZERO — Display and edit the zero calibration A/D count value.
DO NOT adjust this value after WSPAN has been set!
WVAL 10000
test_weight
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 26 for more informa-
tion about using this parameter.
Table 3-4. Calibration Menu Parameters
WZERO
*CAL*
Display and edit
zero calibration
A/D count value Display and edit
test weight value
WVAL
*CAL*
Display and edit
span calibration
A/D count value
WSPAN
*CAL*
Press Enter to
remove offset from
zero and span
calibrations
REZERO
VERSDATETIME
PFORMT
SERIALCALIBRCONFIG FORMATPROGRM
10000