Rice Lake RL350-10 Series User manual

RL350-10 Digital Wheelchair Scale
350-10 Series
Software Revision 11439
Technical Manual
Model 350-10-2 Model 350-10-3
Model 350-10-7 Model 350-10-8
PN 152495 Rev DApril 4, 2018

An ISO 9001 registered company
© 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

Contents
© Rice Lake Weighing Systems ●All Rights Reserved i
Contents
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.
1.0 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.0 Scale Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1 Unpacking Your Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.2 Repacking. . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.3 Setting Up Your Scale. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.4 Inserting Batteries. . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 AC Power Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.0 Scale Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Weighing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Hold/Release Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Preset Tare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Toggle Tare. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Body Mass Index (BMI) Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 Scale Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1 Scale Navigation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.1 Change Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.2 Enter Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.1.3 Save and Return to Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 Setup Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.3 Main Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.4 Programming Mode Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.5 Default Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.5.1 Set to Default . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 12
4.6 Scale Calibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.7 Test Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.0 RS-232 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.1 Push-Button Keypad Print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.2 Communication Protocols. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2.1 Escape Protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.2.2 Maintenance Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.3 USB Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.0 Troubleshooting and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1.1 Basic Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.1.2 Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.2 Troubleshooting and Testing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.3 Wheelchair Scale Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6.4 Wheelchair Scale Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 22

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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 1
1.0 Introduction
The Rice Lake Digital Wheelchair Scale is a user-friendly, quality scale, designed for safe weighing of the handicapped and
mobility challenged individuals. Movement compensation technology ensures sound, accurate weighments. The scale has roll
on ramp access and comes in four different configurations:
• Single ramp folding wheelchair scale
• Single ramp platform wheelchair scale
• Dual ramp folding wheelchair scale
• Dual ramp platform wheelchair scale
The scale has a non-skid rigid platform and two rear heavy duty wheels for easy maneuverability.
Figure 1-1. Digital Wheelchair Scale (single ramp and dual ramp models shown)
The scale is set up to use motion sensing technology, to determine actual weight of a moving patient. The weight can be
displayed in pounds or kilograms and you can enter a tare weight. Section 3.0 on page 6 of this manual explains the scale
operation and how to obtain a tare weight.
The wheelchair scale has a unique folding feature that enables easy transportation and simplifies assembly, avoiding the need
for field wiring and recalibration. All that is required is to open the packaging and unfold the scale.
Manuals can be viewed or downloaded from the Rice Lake Weighing Systems website atwww.ricelake.com/manuals
Model 350-10-2 Model 350-10-3
Model 350-10-7 Model 350-10-8

RL350-10 Digital Wheelchair Scale
2 Visit our website www.RiceLake.com
1.1 Safety
There are certain precautions that should be taken to prevent personal injury to the user and damage to your scale.
Safety Signal 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.
Failure to heed could result in serious injury or death.
Do not drop the scale or subject it to violent shocks.
For accurate weighing, the scale must be placed on a flat, stable surface.
Do not transport the scale while someone is standing on it.
Weight exceeding the maximum capacity (1000 lb/453 kg) may damage your scale.
Operating at voltages and frequencies other than specified could damage the equipment.
If the LO Bat indicator activates, for accurate weighing, replace the batteries or connect the scale to an AC power source as soon
as possible.
Rice Lake Weighing Systems offers optional AC adapters, utilizing an adaptor not supplied by us voids all warranties.
To avoid cross contamination, the scale should be cleaned regularly.
Avoid contact with excessive moisture.
Do not allow minors (children) or inexperienced persons to operate this scale.
Do not jump up and down on the scale.
Do not use in the presence of flammable materials.
Do not make alterations or modifications to the scale.
People with disabilities, or who are physically frail, should always be assisted by another person when using this scale.
Do not use the scale on slippery surfaces, such as a wet floor.
Do not use this scale when your body/feet are wet, such as after taking a bath.
WARNING

Scale Assembly
© Rice Lake Weighing Systems ●All Rights Reserved 3
2.0 Scale Assembly
2.1 Unpacking Your Scale
Place the unopened box in an open area that has ample room for unpacking the scale.
Recommended tools needed to set up your scale include:
• Scissors or a box cutter
Usingscissorsor aboxcutter, cutthestrappingbands thatsecurethebox together. Immediately afteropeningthe box,visually
inspect the scale and components to ensure all parts are included and undamaged.
Parts contained in the shipping box include:
•Scale
• Box containing six AA batteries and four feet
2.2 Repacking
If the Rice Lake Digital Wheelchair Scale must be returned or moved, it mustbe properly packed with sufficient packing
materials. When possible, use the original carton and packing material.
IMPORTANT
Damage caused by improper packaging is not covered by the warranty.
2.3 Setting Up Your Scale
Move the scale into the area where the weighing process will occur. It’s recommended to place the scale on a hard, level
surface for the most accurate weighments. Thin carpeting is acceptable, but not recommended.
CAUTION
Rice Lake recommends using two people for lifting the scale and to use proper lifting techniques to prevent
injury.
IMPORTANT
Do not lift the scale out of the box by its handle as this can cause the hinges to break or affect the scale
operation.
1. Using two people, lift the scale out of the box by the base.
2. Stand the scale on edge to remove the packing material.
Figure 2-1. Scale on Edge
3. Screw the four feet clockwise into the scale base as far as possible.

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4. Turn each foot counterclockwise two full rotations, to ensure there is adequate clearance between the scale and the
floor.
5. Lower the scale base down to the floor carefully. 
There should be minimal clearance between the scale base and the floor. Figure 2-2shows the width of a finger being
slid between the scale base and the floor.
IMPORTANT
Not having clearance around the scale base creates inaccurate weighments.
Figure 2-2. Clearance Between Scale Base and Floor
6. Gently press down on all corners of the scalebase to ensure there areno high spots or rocking of the scale base. The
scale must be completely level.
IMPORTANT
An unleveled base produces inaccurate weight readings.
7. Turn the knobs to loosen the hinges and raise the handle.
Figure 2-3. Loosen Hinges to Raise Handles
8. Tighten the knobs to secures the handrail and the indicator mounted on it.
Hinge Knob

Scale Assembly
© Rice Lake Weighing Systems ●All Rights Reserved 5
2.4 Inserting Batteries
The six AA batteries that come with the scale offer an average of 25 hours of continuous use.
To install the batteries:
1. Open thebattery chamber cover by turning the thumbscrew to the left and remove the cover.
2. Insert batteries into the battery chamber as illustrated in the back of the chamber.
Figure 2-4. Battery Chamber
3. Put the cover in place and turn the thumbscrew to the right to secure it.
Note
Batteries must be removed from the unit prior to long periods of disuse or long term storage.
If an external power supply or USB power supply is connected, the battery flag on the display is turned off.
When using battery or USB power supply, the back light power is deducted to 60%.
2.5 AC Power Connections
Use the optional 120 VACor 230 VAC adapter when power is available. Rice Lake Weighing Systems offers optional AC
adapters that plug into the back of the indicator as shown in Figure 2-5.
IMPORTANT
Using an adapter not supplied by Rice Lake Weighing Systems voids all warranties.
Figure 2-5. Power Connection
Thumb
Screw
AC Power
Connection

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3.0 Scale Operation
The Rice Lake Digital Wheelchair Scale display hasvarious front panelkeys as shown in Figure 3-1.
Figure 3-1. Front Panel Display Keys
Key Descriptions
Table 3-1 describes each of the key functions.
Table 3-1. Rice Lake Digital Wheelchair Scale Key Functions
Item No Name Function
1BMI Enables the user to access the BMI (Body Mass Index) function. This key only works if there is a locked weight shown on
the display and the BMI function is turned on in the configuration mode.
2TARE Used to subtract the weight off the scale, example: oxygen tank, other equipment.
3CLEAR Allows the user to return to normal weighing when the BMI value is being displayed.
While in BMI mode, the height display causes the value to return to the default of 190.0 cm, 5 ft, 7.5 in.
4Print
LB/KG Print — A long key press will send data out from the RS-232 port. LB/KG — A short key press allows the user to toggle between kilograms and pounds providing that it’s enabled in config-
uration mode.
There is no toggling while in the BMI mode.
5Zero Clears the weight off the scale and returns it to zero after three seconds.
It works only if the current weight is stable and zero up to 2% of full weight.
6Hold
Release Hold & Release — The first press holds the most current weight value shown on the display. A second press releases the weight value shown.
This key is not active while in BMI mode.
7On/Off Switches the scale on or off.
8 ENTER Used to accept height in BMI mode.
Accepts the value of the parameter last entered and moves to the next stage.
A long press of the ENTER key during the scale’s start up process will enter the ID display (pre-parameter mode).
9Up/Down Arrows Used to adjust height input (0.5''/0.5 cm) while in BMI mode.
Adjusts the value of the flashing digit/number.
IMPORTANT
The keys on the front panel display are very sensitive so only a gentle pushing motion is required to obtain
results.
The scales have thecapability of performing different operations beyond just calculatingweight. The various operating
instructions are described below.
1234
5
6
7
98

Scale Operation
© Rice Lake Weighing Systems ●All Rights Reserved 7
3.1 Weighing
Use the following steps to weigh a person.
1. Press to turn the scale on. 0.0 displays with ZERO on the upper display.
2. Have a person step on the scale, the weight displays. LOCK is displayed onthe upper display and the display beeps
to indicate the end of the weighing process.
• Press to toggle the display between kg and lb.
• Press and hold to turn off the scale, OFF displays.
3.2 Hold/Release Function
Use the following steps to use the Hold/Release function.
1. Have a person step on the scale.
2. Press . Have the person step off the scale, the weight and HOLD & LOCK remain on the display.
3. Press to release the hold lock. The does not work until thehold is released.
Note
Pressing prior to a person stepping on the scale also works.
3.3 Preset Tare
Use the following steps to use the Preset Tare.
1. With 0.0 displayed, place the extra load on the scale.
2. Press
TARE
T
until 0.0 displays again and NET displays.
3. Remove the extra load from the scale. The weight displays with a negative symbol to the left of it.
4. Have the person to step on the scale with the extra weight. The persons weight displays and NET is displayed. The
weight of the extra load remains stored in memory.
5. To cancel the tare weight, press and hold
TARE
T
until the display returns to 0.0 and GROSS displays. Tare weight is
also canceled by turning off the scale.
3.4 Toggle Tare
Use the following steps to use the Toggle Tare function.
1. With 0.0 displayed, press
TARE
T
.
2. The default tare value is displayed (default is programmed to be 33.0 lb/15.0 kg), while the zero is flashing.
3. Use and to adjust the value.
4. Press
ENTER
to start the tare function, NET displays.

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3.5 Body Mass Index (BMI) Function
Use the following steps in determining the BMI.
LB Mode
1. Ensure that the scale is at zero.
2. Have the person step on the scale to obtain a weight. LOCK displays.
3. Press
BMI
. BMI and FT/IN are lit on the display and a default value of 5 feet and 7.5 inches (5-07.5) flashes.
4. Use and to adjust the height value and press
ENTER
to move to the next step.
5. The BMI value and BMI display. Press
CLEAR
to return to the weighing mode or step off the scale and the BMI function
will be turned off.
KG Mode
1. Ensure that the scale is at zero.
2. Have the person step on the scale to obtain a weight. LOCK displays.
3. Press
BMI
. BMI and CM are lit on the display and a default value of 170.0 cm (170.0) flashes.
4. Use and to adjust the height value and press
ENTER
to move to the next step.
5. The BMI value and BMI display. Press
CLEAR
to return to the weighing mode or step off the scale and the BMI function
will be turned off.

Scale Configuration
© Rice Lake Weighing Systems ●All Rights Reserved 9
4.0 Scale Configuration
The scale can beconfigured using a series of menus accessed through the frontpanel when thescale is in setup mode.
4.1 Scale Navigation
Use the buttons onthe front panel to navigate through the menus andparameters
4.1.1 Change Parameters
•Press
BMI
to scroll through the menus and/or parameters
•Press
ENTER
to enter a displayed menu and/or parameter
•Press or to scroll through values
•Press
ENTER
to save the displayed selection and move to the next parameter
4.1.2 Enter Numbers
•Press
ENTER
to enter parameter value
•Press or to increment/decrement numbers
•Press
BMI
to move to the next digit
•Press
ENTER
to save value and move to the next parameter
4.1.3 Save and Return to Main Menu
• When a parameters selection/value is correct, press
ENTER
. The next parameter displays.
• When all parameters selections/values are correct, SAVE displays
•Press
ENTER
. DONE displays.
•Press
ENTER
to save settings and return to weigh mode.
4.2 Setup Switch
Access to the setup switch is located under the tilt stand cover. Use a Phillips head screwdriver to remove the fourscrews
holding the cover in place.
Figure 4-1. Setup Switch Location
Setup Switch Location

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Use the following steps to enter into configuration mode.
1. Make sure the scale is turned off.
2. Turn the scale on by simultaneously pressing and
ENTER
.
3. Continue to hold both keys until Id appears. The unit cycles through its startup function and continues to display the
software version.
4. Access the recessed setup switch located in the back of the indicator. Use a small non-conductive tool to press the
setup switch. PROG displays.
5. Press
BMI
to advance to the desired menu.
6. Press
ENTER
and advance in the manual to the related menu selection for further instructions.
4.3 Main Menu
Figure 4-2. Top Level Menu
Table 4-1.
Program Setup configuration
Calibration Calibration settings
Default Reset all settings to factory default
Done Returns to weigh mode
4.4 Programming Mode Menu
The Programming Mode allows setup of the indicator to determine how the scale reads the weight and displays output.
Figure 4-1. Programming Menu Layout
Parameter Description
DEFCALIBPROG DONE TEST
PROG
FULL LOAD G-CAL G-LOC ASTRT ARW SAL ROUND DISP
value value value value value value value
0.2
1.0
0.5
2.0
10.0
5.0
0.1 00000
0.00
0.0
0.000
0.0000
BAUD ATOL ALEN ATOUT TOFF SPACE UNITS OP SAVE
value value value value P00-0
KG & LB
KG
5
3
4
2
1
0
8
9
6
7
96
1152
48
576
384
288
144
192
LB

Table 4-2. Program Mode Parameters
Parameter Description
FULL Full Capacity – enter value of the scale capacity; default: 2500 kg
LOAD Load – weight applied during calibration; default: 160.0 kg NOTE: can also be changed in the calibration menu
G-CAL default: 00000
G-LOC default: 00000
ASTART Auto-Start – weight process start limit; maximum (full capacity)/10; determines when the weight algorithm starts (when the ---- is dis-
played), below this value the scale displays live weight; default: 2.0 kg
ARW Auto Reweigh – restarts the weight algorithm if the weight changed by more than this value; default: 2.0 kg
SAL Semi Auto Live – interval between weight displays during the algorithm process; default: 0.5
ROUND Scale Resolution – display toggles between a numeric value and ROUND; decimal point location is set to the DISP parameter; 
selections:0.1 kg (default), 0.5, 1, 2, 5, 10, 20, 0.2
DISP Decimal Point – display toggles between a numeric value and DISP; default: 00000
BAUD Baud Rate – set required baud rate; selections: 96 (default), 48, 1152, 576, 384, 288, 192, 144; end zeros are not displayed
ATOL Algorithm Initial Tolerance – display toggles between a numeric value and ATOL; default: 10; 
value above 255 (max) does not allow indicator to proceed and returns to the previous value
ALEN Algorithm Initial Exponent – display toggles between a numeric value and ALEN; default: 8;
Value above 10 (max) does not allow indicator to proceed and returns to the previous value.
ATOUT Algorithm Maximal Exponent – display toggles between a numeric value and DISP; default: 10;
Values above 15 (max), does not allow indicator to proceed and returns to the previous value.
TOFF Auto Off Timer – turns unit after the set number of minutes; 0-9 minutes; 0 = always on; default: 5 min
battery power only, does not work if using an external power supply
SPACE Space – number of new lines after print; default: 7
UNITS Units – select the unit of measure; selections: LB, KG, KG/LB (default)
NOTE: When indicator is set to LB or KG, toggling between them is not available in the weighing mode.
OP Binary options:
• OP0 — Live weighing options (0=disable, 1=enable)
• OP1 — Communication protocol (0=ESC, 1=maintenance)
• OP2 — BMI menu (0=disable, 1=enable)
• OP3 — RTC power (0=disable, 1=enable)
• OP4 - Semi-Auto-Live — (0=disable, 1=enable)
• OP5 - Full calculation — (0=spatial, 1=multiply by (0=disable, 1=enable
• OP6 - Tare - (0=disable, 1=enable
• OP7 - Bat type — (0=dry batteries, 1=rechargeable batteries)
• OP8 — OIML mode - (0=disable, 1=enable
SAVE Saves settings and returns to upper level
Scale Configuration
© Rice Lake Weighing Systems ●All Rights Reserved 11
To enter the program menu:
1. Enter the setup mode. See Section 4.2 on page 9.
2. With PROG displayed, press
ENTER
.
3. Using the navigation instructions in Section 4.1 on page 9, set all PROG parameters.

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4.5 Default Menu
The default menu is used to return the scale to the original factory settings. This will not change the calibration.
Figure 4-3. Default Menu
4.5.1 Set to Default
1. Press
ENTER
. NO displays.
2. Press . YES displays.
3. Press
ENTER
. DONE displays.
4. Press
BMI
to return to main menu.
4.6 Scale Calibration
To calibrate the scale:
1. Enter the setup mode. See Section 4.2 on page 9.
2. Press
BMI
to scroll to CALIB.
3. Press
ENTER
. A numeric value displays (weight to be used forcalibration). Only calibrate in LB.
4. Press
ENTER
. The digit on the right flashes.
Note
• Press or to change the value of digit.
• Press to move to the next digit.
• When the desired value is displayed, press . CLEAR displays.
To quit calibration, press or . ABORT displays. Press
BMI
to abort and return to upper level.
5. Remove all weight from scale platform, then press
ENTER
. ===== displays.
6. When PUT and value flashes on display, put the weight onthe platform.
7. Press
ENTER
. ===== and then Save displays.
8. Press
ENTER
. DONE displays.
9. Press
BMI
three times to the top level DONE parameter.
10. Press
ENTER
to return to weigh mode.
DEFCALIBPROG DONE
NO
YES
BMI
ENTER

Scale Configuration
© Rice Lake Weighing Systems ●All Rights Reserved 13
4.7 Test Menu
To access the TEST menu, use the following steps.
1. Turn the scale on by pressing the On/Off key and the ENTER key simultaneously until ID flashes.
2. Press the ENTER key again.
3. Continue to press the BMI key to scroll through the various menu items.
4. Once complete, press the BMI key again and Done is displayed.
5. Press the ENTER key to start the weighing process.
DEFCALIBPROG DONE TEST
VER BAT VALUE A2D
1.83 value value value
Figure 4-4. Test Menu
Table 4-3. Test Menu
Parameter Choice Description
VER Value Displays the current software version.
BAT Value Displays the current battery level.
VALUE Value Displays the actual value.
A2D Value Displays the actual raw counts of the scale.

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5.0 RS-232 Communication
The scale comes with an RS-232 port that enables weight data to be transmitted to other equipment, such as a computer or
printer. The RS-232 cable with DB-9 connector (PN 100719) is available from Rice Lake Weighing Systems. Figure 5-3 on
page 17 shows where the RS-232 connection is.
The RS-232 parameters are 9600 baud (selectable in the programming mode), 8 data bits, 1 stop bit, no parity and no
handshaking.
There are three methods of communication:
• Pushbutton keypad print
• Escape protocol
• Maintenance protocol
5.1 Push-Button Keypad Print
With a stable, in-range weight, press and hold the LB/KG/Print key for at least three seconds, or until the scale displays PRINT.
Note that if the scale does not beep after five seconds, then release the button as the weight was either in motion, or out of
range.
If displaying weight and not BMI, the scale will send out the following 21 character string:
xxxxxxxxx<SP>uu<SP>mmmmm<SP><CR><LF>
Where:
xxxxxxxxx is the weight with decimal point and " - " sign, if negative uu is the unit (lb or kg).
mmmmm is the mode (gross or net)
Example:
60.1 KG= <PATIENT><SP><WEIGHT><SP>-60.1<SP>KG<SP><CR><LF>
In BMI mode (displaying the BMI value), the scale will send outthe following data:
PATIENT WEIGHT 60.1 KG
PATIENT HEIGHT 170.0 CM
PATIENT BMI 20.8
Example in KG:
<PATIENT><SP><WEIGHT><SP>-60.1<SP>KG<SP><CR><LF>
<PATIENT><SP><HEIGHT><SP>-170.0<SP>CM<SP><CR><LF>
<PATIENT><SP><B><SP><M><SP><I><SP><SP><SP><20.8<SP><SP><SP><SP><CR><LF>
Example in LB:
<PATIENT><SP><WEIGHT><SP>132.4<SP>LB<SP><CR><LF>
<PATIENT><SP><HEIGHT><SP>-5-07.5<SP>FT<SP><CR><LF>
<PATIENT><SP><B><SP><M><SP><I><SP><SP><SP><20.4<SP><SP><SP><SP><CR><LF>
In case of under weight or over weight, the word Under or Over will be sent correspondingly.

RS-232 Communication
© Rice Lake Weighing Systems ●All Rights Reserved 15
5.2 Communication Protocols
The Rice Lake Digital Wheelchair Scale has two communication protocols, escape and maintenance protocol.
5.2.1 Escape Protocol
An escape protocol is where the escape (0X1B or ASCII 27) is used to indicate that there is a command following. On the PC
side there must be a listener created by the vendor that will interpret this protocol. This listener must also take care of all the
issues regarding data integrity to make sure that the data that was sent and received is valid.
Two examples include:
• Scale initiated communication
• PC initiated communication
Table 5-1 is what can be sent across communications lines.
Table 5-1. Escape Protocol Commands
PC Initiated ESC Value
Request current values/settings R
Diagnostics A
Send scale control messages C
PC Initiated ESC Value
Send single reading R
Send diagnostic response
Table 5-2 lists the ESC characters that will be used.
Table 5-2. ESC Characters
Name ESC
Character ESC Value with Parameters Description
Reading R R Tells PC the scale is sending a reading; immediately following this is the value that is sent
Example: <ESC><R>ESC><W0200.0<ESC>Nm<ESC>E
Weight WWnnn.n The patient weight (Example: W02000 means 200.0). If scale is overloaded or under loaded,
999.99 is returned
Height HHnnn.n Patient height
BMI BBnn.n Patient BMI
Units NNc Indicates the units the values have been taken (m=metric, c=constitutional).
End of Packet (EOP) E E Indicates the end of the command has been reached.
Diagnostics
(request) AAccc A request for a diagnostic test on certain parts of the scale (like battery life, load cells).
Diagnostics
(response) ZZccc The response of the diagnostics done on the scale; values include error codes to indicate an
issue, or all zeros (Z000) to indicate the scale is performing properly
Control (set a value) CCccc=c Sets the value of the scale’s global settings
Example: <ESC><CUOM=m><ESC><E sets the unit of measurement
Table 5-3. Scale Global Values and Identifiers
Name of Control Identifier Unit
Unit of Measure (metric or constitutional) UOM c (m or c)

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Samples of Escape Protocol
Examples of what is senttothecomputer from the scale.
Figure 5-1. Escape Protocol Examples
Examples of diagnosing battery request and responses.
<ESC> ABAT <ESC> E
Diagnose battery
EOP
<SCALE> <PC>
direction of communication
<ESC> ZE4U <ESC> E
Battery is okay
(no errors)
EOP
<SCALE> <PC>
direction of communication
<ESC> ZE4L <ESC> E
Battery is very low
(Unstable)
EOP
Diagnose Battery Request Battery OK Response Battery Low Response
Figure 5-2. Diagnose Battery Examples
5.2.2 Maintenance Protocol
Table 5-4 lists the maintenance protocol commands.
Table 5-4. Maintenance Protocol Commands
Command Definition
RReboot
VFirmware ID + development version
WCurrent weight
ACurrent AD
ZZero the scale
FShow flash values (used for the first flash process)
LUSB On/Off (not available on USB communication
<ESC>R <ESC>E
Reading
(request)
EOP
<SCALE> <PC>
EOP
Unit of Measure
= Metric
<ESC> R <ESC> W0210.9 <ESC> Nm <ESC> E
Reading
(Command)
Weight = 0210.9
<SCALE> <PC>
direction of communication
Escape Protocol Example 1 Escape Protocol Example 2