AD4212L-R50/ AD4212L-R100
Weigh Module
Simplified Instruction Manual
Refer to the instruction manual on the A&D website.
URL: https://www.aandd.jp/
1WMPD4003880B

3.2.
Accessories

Optimal digital filter setting example (This manual describes how the product works and how to get the most out of
it in terms of performance. Read this manual thoroughly before using theproduct and keep it at hand for future reference.
Product specifications are subject to change without any obligation on thepart of the manufacturer to notify of changes.
This manual is subject to change without prior notice to improve the product.
No part of this manual may be photocopied, reproduced, or translated intoanother language without the prior written consent of A&D Company, Limited.
Do not attempt to repair, modify or disassemble the product. Doing so willvoid the warranty.

setting)

Rod type crimp terminal
Load cell tag

Guide for DIN rail

Power cable

Main display

Vent

3.4. Status indicators
3.5. Key switches

Weighing unit
The cable connector is detachable.
Match the guides on the connectors andturn the ring to secure the cableconnector.

3.2. Sensor terminals ofload cell3.3. Micro-B USBconnector

3.1. Power supply connector

5.5Center of pan

8202097(68)M2.6 screw #4Wind shield

303-4.4 #1

Gap between pan and wind shield #5

Direction of forcePan20.5

Precautions During Use

Case

42General Specifications

Model
AD4212L-R50
AD4212L-R100
Maximum capacity
51 g
110 g
Minimum division
1 mg
1 mg
Repeatability
1 mg
2 mg
(Standard deviation)
Stabilization time
0 g to 5 g Approx. 0.3 s 0 g to 5 g Approx. 0.3 s(With optimal filter set, under 5 g to 51 g Approx. 1.0 s 5 g to 110 g Approx. 1.3 s
good ambient conditions)
Ability of the stopper
1 kg
to withstand overload
Weighing pan diameter
20.5 mm
Weighing unit size/mass
30 × 165 × 56 mm (W×D×H)/Approx. 400 g
Display unit size/mass
35.3 × 101.3 × 110 mm (W×D×H)/Approx. 200 g
Cable dia./length/mass
4.5 mm/10 m/Approx. 350 g
Power source
24 VDC +10%, -15%
Operating conditions-10 °C to +40 °C, 85%RH or less (no condensation)-1-4.5165
Base plate

50

Leveling foot(Three point support)#1 Use the three 4.4 holes to attach the weighing unit with a tightening torque of approx. 1 Nm.
#2 Use the two M2 holes to attach a jig to the pan with a depth of 5 mm and a tightening
torque of 0.4 Nm or less.
#3 Insert the three leveling feet into the three M4xP0.5 holes (narrow pitch).
#4 Remove the two M2.6 screws when removing the pan.
#5 When dirt and dust accumulate in the gap between the pan and the wind shield,
remove the pan and then remove dirt and dust.

Serial No.

3.1.

Power Supply Connector

Use a standard Micro B USB connector for USB so thatthe function settings can be read and written.
3.4. Status Indicators
LEDDescription
Gross : The LED lights when a gross value is displayed.
Net :)

Calibration mode ........................................ (With the display turned off,
+The mode to calibrate zero point and span of the weigh module using acalibration weight or by inputting a value)

4.

Calibration

The weigh module measures the voltage of the load cell and displays it.
Calibration corrects the signal from the load cell to convert it into mass correctly.
※ Perform stable measurement during calibration to prevent measurement errors.
※ During stable measurement, theLED lights.
※ The blinking decimal point means that the current value is not the weight value.
※ Whenwith a number is displayed, it indicates that an error has occurred.
Refer to "Calibration Errors" for details.
※ Before the calibration, allow the weigh module at least 10 minutes to warm up
to avoid drift caused by changes in temperature.
4.1.

4.1.1.

Control I/O circuit is isolated from load cell andpower supply terminals.
Supply +24 VDC between I/O PWR+24V terminals
and COM terminals.
(MDR connector with 20 pins, manufactured by 3M).
Standard serial output (C.L.) circuit is isolated fromother terminals.
(MDR connector with 20 pins, manufactured by 3M.)
For the RS-485, use a power clamp connector (Atype) manufactured by 3M.

2-M2 #2+Calibration Using a Weight (FG (SHLD/SLD) ....... Ground terminal(All connector shields are connected internally with FG.)

-2-is displayed.

Zero Calibration

Step 3 Press thekey to display.
To skip zero calibration, press thekey and proceed to Step 5.
Step 4 Confirm that theLED is lit, and then press thekey. Thenis displayed for 2 seconds. To skip span calibration, press thekey twice to return to weighing mode.
4.1.2.

Span Calibration

Step 5 Whenis displayed, press thekey. The current calibration
weight value is displayed with the rightmost digit flashing. Specify a newvalue using theandkeys. To skip span calibration, press thekey three times to return to weighing mode.
Step 6 Place the weight on the weighing pan. Confirm that theLED is lit andpress thekey. Thenis displayed for 2 seconds.
It is recommended to use a weight of 50g for AD4212L-R50, and 100g for
AD4212L-R100. When using a weight other than the recommended one,use a weight with 1/2 or more of the maximum capacity.
Step 7 Whenis displayed, remove the weight from the weighing pan.
To calibrate span again, press thekey.
Step 8 Press thekey. Thenis displayed and calibration data isstored in nonvolatile memory (FRAM) of the weigh module.
Step 9 Press thekey to return to weighing mode.
Note
When the span calibration value is set to 100 g in Step 5, select the highestorder digit using thekey, and then make the status indicator LEDs lightas shown below using thekey.

The LED lights when a net value is displayed.

Hold : The LED lights when the weighing value is being held.
Stable :The LED lights when the current weighing value is stable.

Indicates that the value ofthe highest-order digit
is “10”.

Zero : The LED lights when the weighing value is within the center-zero range.
The LED indicates the function selected atin the basic function.
※ TheLED lights when thedisplay is stable.

3.5. Key Switches+24 V ....................... +24 VDC terminal
0 V ........................... 0 VDC terminal)

Step 2 Press thekey to enter calibration mode.
To return to weighing mode, press thekey.

3.3. Control I/O, Standard Serial Output, RS-485 and Micro-B USB

3-M4xP0.5(Narrow pitch) #3

When power is turned on with no keys pressed, the weigh module enters weighing mode.
In weighing mode, the key functions are as follows.
Switches between the gross weight and the net weigh (default value)
ZerosTaresTurns the display off (when pressed and held)
To perform other operations, refer to the instruction manual available on the A&D website.

-3-)

Step 1 Turn off the display by pressing and holding thekey. Then, while
holding thekey, press thekey.
will be displayed
indicating calibration mode.

Pull down when removing.
182
165
154+Calibration is performed by loading and unloading a calibration weight.

Weighing unit

The weigh module is a precision instrument that handles micro signals. Prevent
noise sources such as power lines, radios, electric welders or motors from affecting
the instrument.
Do not disassemble the weigh module.

2.

3.3. Control I/O andStandard serial output

Vent

Ring of connector

Note
When connecting the cable, confirm thatthe display unit, the weighing unit and thecable have the same serial number.
Otherwise, the display unit may not display
the correct weighing value.

3.3. RS-485 connector

Installation and Precautions Before UseOperation Mode

Guide of connector

Base plate

Hook for DIN rail

1.2.

Push the button to insert or remove
the wire

Display unit

1. Precautions
Before use, confirm the following for safe operation.
For the installation site, avoid places with vibration, shock, extremely hightemperature and humidity, direct sunlight, dust, splashing water, air containing
salt or corrosive gases, and where inflammable gases are present.
The operating temperature range is -10°C to +40°C (14°F to 104°F).
Ground the weigh module.
Use a stable 24 VDC power source free from instantaneous power failure ornoise, which may cause malfunction. Do not share the power line with otherdevices.
Do not share the ground line with other electrical power equipment.
When extending the load cell cable, separate it from the power line andelectrical lines with much noise.
Turn the weigh module on only after installation is complete. The weigh module
is not equipped with a switch to turn it off.
When installation is complete, take the protective cover off before turning theweigh module on.

Connection
Display unit
When connecting or removing the cable, push the connector button with ascrewdriver, etc.

Load cell cable

Individual Parts of the Module

2019
All rights reserved.
3-23-14 Higashi-Ikebukuro, Toshima-ku, Tokyo 170-0013, JAPAN
Telephone: [81] (3) 5391-6132
Fax: [81] (3) 5391-1566

1.1.

3.6.

Function mode ............................................................. (In weighing mode,
The mode to set various functions
Check mode ...................................................... (In function mode,
The mode to check the performance of the weigh module

AD4212L-R100
AD4212L-R50
Weighing range Example (setting value) Weighing range Example (setting value)
0 g to 20 g
4.0 Hz (11)0 g to 50 g
4.0 Hz (11)20 g to 51 g
1.0 Hz (15)50 g to 110 g
1.0 Hz (15)※ For the setting procedure, refer to “5.3.2. Basic Function”.

3.

This ManualSensor Terminals of Load Cell

RS-485 connector (2 pieces)
35505-6200-A00 GF manufactured by 3M
Branch connector (1 piece)
35715-L010-A00 AK manufactured by 3M
Leveling foot (3 pieces)-4-4.2.
Display

Calibration Errors (5. Function Mode)

Cause
The display resolution(maximum capacity / minimumdivision) exceeds the specifiedvalue.

Treatment
Make the minimum division greater ormake the maximum capacity smaller.
The specified value depends on theweigh module.
Check the load cell rating andVoltage at zero calibration
exceeds in the positive direction. connection. When nothing is wrong withthe rating and connection, adjust the loadcell output. When the load cell or A/D
Voltage at zero calibration
exceeds in the negative
converter may be the cause of error,
confirm this by using check mode.
direction.
The value of the calibration
weight exceeds the maximum
capacity.
Use an appropriate calibration weightand calibrate again.
The value of the calibration
weight is less than the minimum
division.
The load cell sensitivity is not
The load cell or A/D converter may besufficient.
damaged.
Voltage at span calibration is less
Check the load cell connection.
than voltage at the zero point.
The load cell output voltage is too
The load cell or A/D converter may behigh when the mass ofdamaged.
maximum capacity is weighed.

Gravity acceleration table
Amsterdam

9.813 m/s2

Manila

9.784

m/s2

Athens9.800 m/s2

Melbourne

9.800

m/s2
22

5.1.

RS-4855.2.

m/s

Bangkok

9.783 m/s2

Milan

9.806

m/s2Birmingham

9.813 m/s2

New York

9.802m/s2

5.3.

2

5.3.1.

Oslo

9.819m/s

Buenos Aires

9.797 m/s2

Ottawa

9.806

m/s2

Calcutta

9.788 m/s2

Paris

9.809

m/s2

Chicago9.803 m/s2

Rio de Janeiro

9.788

m/s2

Rome

9.803

m/s2

9.8002m/s

2Copenhagen
Cyprus29.815 m/s

29.797 m/s

San Francisco

Djakarta

2

9.781 m/s

Singapore

9.781m/s

Frankfurt

2

9.810 m/s

Stockholm

9.818

m/s2

Glasgow

9.816 m/s2

Sydney9.797m/s2

Havana2

9.788 m/s

Tainan9.788m/s2

Helsinki9.819 m/s2

Taipei

9.790

m/s2

Kuwait2

9.793 m/s

Tokyo

9.798

m/s2

Lisbon9.801 m/s2

Vancouver, BC

9.809

m/s2

London (Greenwich)

9.812 m/s2

Washington DC

9.801m/s2
2

2

Los Angeles

9.796 m/s

Wellington NZ

9.803m/s

Madrid9.800 m/s2

Zurich

9.807

m/s2

Communication mode

Key Operations

Baud rate
Slave address)

Step 1 Turn off the display by pressing and holding thekey. Then, while holding
thekey, press thekey.
will be displayed indicating calibration
mode.
Step 2 Press thekey to enter calibration mode.
is displayed. To return to weighing mode, press the

Step 3 Selectusing thekey, and then press thekey.

will be displayed

Step 2 Press thekey to enter function mode.
To return to weighing mode, press thekey.
Step 3 SelectItem & Function

Digital filter 1

Digital filter 2

using thekey, and then press thekey.

Description, Range & Default value
Selects a cutoff frequency.
0 : None
6 : 20.0 Hz 12 : 2.8 Hz
1 :100.0 Hz
7 : 14.0 Hz 13 : 2.0 Hz
2 : 70.0 Hz
8 : 10.0 Hz 14 : 1.4 Hz
3 : 56.0 Hz
9 : 7.0 Hz 15 : 1.0 Hz
4 : 40.0 Hz 10 : 5.6 Hz 16 : 0.7 Hz
5 : 28.0 Hz 11 : 4.0 Hz
Selects a cutoff frequency.
0 : None
6 : 20.0 Hz
12 : 2.8 Hz 18 : 0.40 Hz
1 : 100.0 Hz
7 : 14.0 Hz
13 : 2.0 Hz 19 : 0.28 Hz
2 : 70.0 Hz
8 : 10.0 Hz
14 : 1.4 Hz 20 : 0.20 Hz
3 : 56.0 Hz
9 : 7.0 Hz
15 : 1.0 Hz 21 : 0.14 Hz
4 : 40.0 Hz
10 : 5.6 Hz
16 : 0.7 Hz 22 : 0.10 Hz
5 : 28.0 Hz
11 : 4.0 Hz
17 : 0.56 Hz 23 : 0.07 Hz

Optimal digital filter setting example (setting)

AD4212L-R100
AD4212L-R50
Weighing range Example (setting value) Weighing range Example (setting value)
0 g to 20 g
4.0 Hz (11)0 g to 50 g
4.0 Hz (11)20 g to 51 g
1.0 Hz (15)50 g to 110 g
1.0 Hz (15)

-5--6-

Data Address( Holding Register )400001 - 400002
400003 - 400004
400005 - 400006
400007 - 400008
400009 - 400010
400043 - 400044
400045 - 400046
400047 - 400048

key.

Description, Range & Default value5 : Modbus RTU
6 : Interval output at 100 times/s
7 : Interval output at 200 times/s
8 : Interval output at 500 times/s
5 : 9600 bps
7 : 38400 bps
6 : 19200 bps
8 : 115200 bps
0 : None

1 to 99

R/W

Item

R

Displayed value (Digital filter 1)
Gross value (Digital filter 1)
Net value (Digital filter 1)
Tare value
Status indicator (Status LED)
Displayed value (Digital filter 2)
Gross value (Digital filter 2)
Net value (Digital filter 2)

Error code
Error itemkey.

)

Step 1 While holding thekey, press theindicating function mode.

key, and then press theRemarks#6Error code ( Data address：400065 - 400068 )Description, Range & Default value
Used withfor stability detection.
Stability detection time Range (in 0.1 s intervals):
0.0 to 1.0 to 9.9
Used withfor stability detection.
Stability detection width Range (in 1 digit intervals):
0 to 2 to 100
Basic Function (using theWeighing values

key.

Item & Function

5.3.2.

will be displayed

Modbus RTU data address

Function TableCalibration Function (key.

※ The default value of the communication mode () is Modbus RTU.
Modbus RTU communication parameters are as below:
Character bit length: 8 bits fixed Parity: Even fixed

5.2.2. Changing Values.......... Moves the digit to be selected.
.......... Changes the numerical value.
....... Stores the value and returns to the function selecting mode.
....... Does not store the value and returns to the function selection mode.

9.779

9.811 m/s

Item & Function

Selecting Functions.... Proceeds to function mode from weighing mode.
+.......... Selects a type of function (upper 3 digits).
....... Enters a selected function.
.......... Selects an item under the selected function (lower 2 digits).
....... Enters the item.
....... Stores parameters and returns to weighing mode.

Mexico CityBrussels

Step 3 Select5.2.1.

9.799 m/s)

Step 2 Press the
key to enter function mode.
To return to weighing mode, press thekey.

: Stability detection time
: Stability detection width: Digital filter 1: Digital filter 2: Communication mode
: Baud rate
: Slave address

Digital filter

RS-485 Function (Step 1 While holding thekey, press theindicating function mode.

Stability Detection/Digital Filter/RS-485

Stability detection

Auckland NZ

2

5.3.3.

The function mode stores parameters to control the weigh module.
The parameters are stored even without power supplied.

No errorA/D converter error
Nonvolatile memory error
RAM error
Calibration error
Weighing display error
Load cell connection
verification error

Code No.
012345Error sub code
Item
Code No.
N/A
0N/A
0N/A
0N/A
0
1 to 8N/A
061 to 255

#6 Bit address of status indicators ( Data address：400009 - 400010 )Data Address( Holding Register )400009.
15-00
400010.
15-07400010.
06
400010.
05400010.
04400010.
03
400010.
02
400010.
01
400010.
00

R/W

R

Item

Remarks

Reserved internally
Reserved internally
Z：Zero
S：Stable
G：Gross
N：Net
H：Hold, Hold busy
X：Basic function
Reserved internally

0 fixed0 fixed

LED to turn on = 1
LED to turn off = 0

0 fixedInternal write cycle/write result ( Data address : 400099 - 400100 )No.
01
1 to 8
15
Other

Item
Write success
Write failure
Calibration error
Internal write cycle
None

Reference

Writing to the nonvolatile memory
Not used

Access interval timer ( Data Address：400097 - 400098 )This is an interval timer to count up every 1 ms. When the values are read, the interval
timer is initialized to "0". By reading the values periodically, an approximate
communication time can be measured.
-7--8-