AD-4212D-S
Production Weighing Unit
Simplified Instruction Manual

４．Balance Unpacking, Installation, and Cautions
SS

６．Communication□Assembling the small breeze breakSS

AD-4212D-33S
AD-4212D-32S
AD-4212D-302S
AD-4212D-301S*The cover’ s hole is not
positioned in the center ofthe cover. Attach the cover on
the breeze break so that the holeis positioned just above theweghing pan.

RS-232C
cable forthe external
display(2m)Inch screw #4-40UNC

Refer to the instruction manual on the A&D home page.
URL: https://www.aandd.jp/

1WMPD4004691

1．Introduction

This manual is an outline of and the instructions for the AD-4212D-S series.
Refer to the A&D website for more information on how to use, specifications
and communications. （https://www.aandd.jp/）

2．Features

 A compact Weighing Unit suitable for use in equipment for production line
systems, draft chambers or glove boxes. The weighing unit is compact.
 The calibration using the internal calibration weight can easily be performed.
 A Super Hybrid Sensor is used to provide high resolution.
 Attaching a waterproof cap for cleaning instead of the weighing pan
provides IP65 compliant dustproof and drip-proof specifications.
 The AD-4212D series can output the weighing digital data directly.
Therefore, the AD-4212D series (the weighing unit) can be connected to apersonal computer or a PLC directly.
 The AD-4212D series has a patented shock absorber under the weighing
pan and can cope with movement in all directions, protecting the weighing
unit from an actuator malfunction.
 When connected to an optional AD-8922A or AD-8923-BCD/CC, theweighing data can be received and re-zero and calibration can be donemanually.
 In addition to standard RS-232C communication, BCD output, comparatoroutput, analog output, RS-485 communication, CC-Link, and Modbus
RTU are enabled by using various accessories.

□Attachment to the base
When attaching the AD-4212D series to a base, remove the three levelingfeet and use the screw holes to secure the weighing unit to the base.

５．Specifications
AD-4212D-32S

AD-4212D-302S

AD-4212D-301S

Weighing
capacity

32g

32g/5.1g

320g

320g

Readability

0.001mg

0.01mg0.1mg

Repeatability

0.002mg

0.02mg0.07mg

Displayrefresh rate
Power supply(ＡＣ adapter)
Powerconsumption
Currentconsumption
WeightSecuring the weighing unit fromabove.

-1-Direction⋆Vs-TXD
RXD
SGDSP
RTS
CTS

OutputInput
OutputInput
OutputVa⋆-Description
Internal use Power supply for external
devices :GND⋆
Transmit data
Receive data
N.C.
Signal ground
Data set ready
Request to send
Clear to send
Internal use Power supply for external
devices :Output terminal⋆⋆Contents of the port for the external display only. The port for PLC is N.C.

AD-4212D-33S

0.01mg/0.001mg
0.02mg/0.004mg

10 times/second
Input AC100V (+10%, -15%) 50Hz/60Hz30VA (Including AC adapter)
DC12V Approx.0.3A(Excluding adapters and options)
Approx. 3.6kg□External Dimensions□Access point and port to use
There are the following differences in communication content between theport for the external display and the port for the PLC.
For external display：Continuous output of weighing data.
Output of special commands for displays (those with "@"at the beginning)
For PLC：Output of weighing data by external command.
The recommended ports depending on the usage are as follows.
Access point
Recommended AD-4212D-S port
WinCT,etc.
For PLCPC
WinCT forFor external display
AD4212DPLC
For PLC
AD-8922A
For external display
AD-8923-BCD/CC
For external display
RS-485
For PLC
AD-8551R
Modbus RTU
For external display□Frequently used commands
The corresponding operation can be performed by sending the following
command from the outside.
CommandAction
Q
Immediately request one measurement data
SIR
Immediately request continuous weighing data
C
Release the SIR command
R
Perform re-zeroing
CAL
Perform sensitivity adjustment with built-in weightU
Change the response speed
RNG
Switch the Readability□Example of output weighing data (in A & D standard format)

Securing the weighing unit frombelow.
□Removing the cable

３．Cautions
Before use, pay attention to the following items to fully demonstrate theperformance of the balance.
 This device is a precision instrument. Please handle with care.
 Use in an environment with as little dust and shock as possible.
 Do not install the main body (weighing unit) near the air conditioner.
 Install in a place out of direct sunlight.
 Connect the power to the balance using the AC adapter at least one hour
before use, but for the AD-4212D-33/32, four hours are required. It isrecommended to connecting the power to the balance.
 Calibrate the balance before first use or after having moved it to anotherlocation to enable correct weighing. In addition, calibrate it periodically tomaintain accuracy.

1234
5
6
789

□How to use the power plug stopper

RS-232C cable for the external display (2m) AX-KO3590-1000

Signalname

Pin No.

Weighing panCaution(1) No part of this publication may be reproduced, transmitted,transcribed, or translated into any language in any form by anymeans without the written permission of A&D.
(2) This manual is subject to change without notice at any time to improve
the product.
(3) The contents of this manual and the specifications of the instrument
covered by this manual are subject to change for improvement
without notice.
(4) A＆D bears no responsibility for claims of losses and benefits due tothe operation of this device, regardless of the reason.

□Interface
AD-4212D-S has two RS-232C ports (for display / PLC).
The connector shape of the port for the display and the port for the PLC aredifferent. If you want to use them, you need a dedicated cable for each. Thecable for PLC (AX-KO4472-1000) is not included. If you want to use it,
please purchase it separately.
□Factory setting
Baud rate
2400bps
Data bits
7 bitsParityEVEN
Stop bit
1 bit
CodeASCII
Data format
A&D standard format□Pin assignment

S,+ 0

ST：Stable
US：Unstable
OL：Over capacity

How to disconnect the cable from the weighing unit
Slide the connector sleeve in the direction of the arrow to unlock and gently
pull the connector out.

-2-T00.

1278gCR

LF

Weighing value：9 or 10 chracters Unit：g or mg□Convertible signals
By connecting individual accessories, the output of the AD-4212D-S canbe converted to the following signals.
Accessory
Signal conversion destination
BCD output (Option AD-8922A-01)
AD-8922A
Comparator output (Option AD-8922A-04)
Analog output (Option AD-8922A-06)
AD-8923-BCD
BCD output
AD-8923-CC
CC-Link
RS-485 output
AD-8551R
Modbus RTU-3--4-