1. Introduction

AD-4212F

Production Weighing Unit

Simplified Instruction Manual

View the productpage.
Refer to the detailed instruction manual on theproduct page: https://link.aandd.jp/ad4212f_en/

About this manual

(2)
(3)
(4)

This manual is an outline of the AD-4212F (the weighing unit) and theinstructions for setting up and installing the weighing unit. Refer to the A&D
website for more information on operation methods, specifications, andcommunication methods.
https://link.aandd.jp/ad4212f_en/

2. Features

AD-4212F-6203D
AD-4212F-10202
AD-4212F-22001(1)

CAUTION Do not apply excessive rotational force or pressing force when fixing theweighing pan to the pan support boss.
 Do not apply any pulling up or side forces to the pan support boss.
 Do not apply impact to the weighing pan.

No parts of this manual may be reproduced without permission. Thismanual may not be copied, modified, or translated without the written
permission of A&D Company, Limited.
The contents of this manual are subject to change without notice.
Please contact A&D if you notice any uncertainty, errors, omissions, etc.
in this manual.
A&D Company, Limited bears no liability for direct, indirect, special, or
consequential damages due to the operation of the product, even if
advised of the possibility of such damage. Furthermore, A&D assumes
no liability for claims of rights from third parties. Concurrently, A&D
assumes no liability whatsoever for data losses regardless of (3) above.

 The compact weighing unit has a width of only 80 mm, making it ideal forincorporating into production lines.
 The electromagnetic balance sensor ensures high resolution and high-speedresponse.
 The weighing unit outputs digital data, so it can be connected directly to apersonal computer (PC) or programmable logic controller (PLC).
 Dustproof and waterproof (IP65 compliant).
 The WinCT-AD4212F data communication software makes it easy to checkweighing values on a Windows PC. In addition, filter settings can be easily
applied as needed for the operating environment, required response speed, ordesired accuracy, by being graphically simulated.
 Connect the AD-8922A or AD-8923-BCD/CC (sold separately) to manually
read weighing values, rezero, and adjust sensitivity.
 In addition to standard RS-232C communication, various accessories enable
BCD output, comparator output, analog output, RS-485 communication, CCLink, Modbus RTU, and Ethernet/IP.

3. Product Structure (Part Names)

16

1115

7

© 2023 A&D Company, Limited

14

Safety Precautions

A potentially hazardous situation which, if not
CAUTIONavoided, may result in personal injury or property
damage.
Before use, confirm the following items for safe operation.

CAUTION Never disassemble, modify or repair the weighing unit by yourself.
 The power line used for the weighing unit should be dedicated to it andshould be separate from other driving equipment.
 Do not perform operations near the power supply with wet hands.
 Do not use in a place where gasoline, thinner, or combustible gas mayleak.
 Use in an environment with a temperature of 5°C to 40°C and ahumidity of 85%RH or less.
 Do not poke the diaphragm or packing of the weighing unit with a sharpobject.
 The dustproof and waterproof level of the weighing unit is equivalent toIP65, and its second digit, “5”, corresponds to "having no harmful
influence by receiving direct jet of water". Washing with strong waterpressure or submersion in water may cause water to enter the weighing
unit and cause a malfunction.
 When installing and using the weighing unit under conditions requiring
dustproof and waterproof performance, make sure that the AC adapter
plug is fully inserted into the AC adapter jack and that the signal cable
is attached.
 When not using the AC adapter or the communication cable, keep therubber caps of the packing sections closed.
 Do not apply impact to or drop the weighing unit.
 When transporting the weighing unit, use the packing material in which
the weighing unit was originally packed.
 The weighing unit may affect hearing aids, pacemakers, other electrical
medical devices, fire alarms, automatic doors, and other automateddevices. Do not use the weighing unit nearby this kind of equipment as
it may cause malfunction or accident.

Grounding

5
1213No.
Name
1Weighing pan
2
Screw for fixing pan support (Pan head screw: M5 screws x 10)
3
Pan support
4
Pan support boss
5
Main body
6
Rear of the main body7
AC adapter jack8
AC adapter plug9RS-232C output connector *1
10Grounding terminal
11Indicator lights
12
AC adapter *2
13
Positions of AC adapter ID labels
14
AC adapter ID labels
15
Serial number*1 The connection cable is sold separately.
*2 Please confirm that the AC adapter type is correct for your local voltage andreceptacle type.

4. Precautions for Assembly and Installation□ Fixing to the platform

For stable weighing, be sure to fix the main bodyto the installation platform with screws.
When screwing from the top: M6 screws x 4
When screwing from the bottom: M8 screws x 4
Be careful of the following when assembling andinstalling the unit.

6. Connection and Weighing Value Confirmation(RS-232C)□ How to connect and disconnect the cable** The connection cable is sold separately.
Attach the arrow() side up.

5. Precautions for More Accurate Weighing104

To prevent accidents due to inappropriate handling, this manual contains thefollowing warning signs and marks. The meanings of these warning signs andmarks are as follows.

Mandatory

For precise and accurate weighing, please take notice of the following.

CAUTION
91WMPD4004757B

 Be sure to ground the weighing unit.

 Wire the power line and signal line to ensure distance from power supplies
for driving equipment and other lines that carry large currents.

823Prohibited Air flow may cause the weighing value to become unstable. Avoid
installing the weighing unit near doorways or corridors. Also, do not use
compressed air to move the object to be weighed to the weighing pan.
 Install the weighing unit away from equipment which produces magnetic
fields.
 The electrostatic charge (static electricity) of the object to be weighedor the nearby jig may cause fluctuations in the weighing value.
Insulators such as plastic, glass, etc. are easily charged with static
electricity in environments with humidity of 45%RH or less.
 Install on a level platform. If levelling is not possible, be sure to performsensitivity adjustment in that installation condition.
 When fabricating a dedicated weighing pan, make sure that the surface
area is as small as possible to reduce fluctuations in weighing values
due to drafts, and that the material used is rigid and conductive toprevent static electricity from charging.
 Be sure to connect the AC adapter connected to the power supply towarm up the weighing unit before use for at least half an hour.
 When not weighing at the center of the weighing pan, install theweighing unit so that the total moment of the jig and the object to beweighed is less than the specified value.
(For details, refer to the instruction manual on A&D website.) To reduce measurement error, use the command to perform a zero reset
before every weighing, or calculate the weighing value by the difference
before and after weighing.

 Avoid impact when placing the weighing object on the weighing pan. Thiscan lead to weighing errors and malfunctions of the weighing unit.
 Perform sensitivity adjustment before using the weighing unit for the firsttime or after having moved it to another location. In addition, performsensitivity adjustment periodically to maintain the accuracy.
 Install the weighing unit in a location that is free of dust or vibration.
 A suitable location for weighing is on the first (ground) floor of a building,near a wall rather than in the middle of a room because these locations areless prone to vibration.
 We guarantee the performance of the weighing unit in a non-moving state.
If the weighing unit is built into a system which is to be moved, make surethat it is level when stationary and is housed in a structure that is resistantto vibration. Avoid sudden movements, stops, or impact, and make sure thatany fluctuations in weighing values due to movement have sufficiently
subsided before acquiring data.
 The weighing unit is dustproof and waterproof in compliance with IP65.
However, clean and control the area around the pan when measuring
powders, liquids, metal fragments, etc.
 The best operating conditions are a stable environment of 20 °C ± 2 °C and
45% to 60% RH. To minimize temperature fluctuations, install the weighing
unit where it is not exposed to direct sunlight.
 Do not install in a location where it will be exposed to air flow from air
conditioners or other equipment. Air flow and temperature changes may
cause errors in the weighing value.
 Temperature difference between the ambient temperature and the weighing
object (including the tare) may result in weighing errors due to convection
currents around the weighing object or temperature changes in the weighingunit. Take measures as necessary, such as insulating with a dedicated jigpan.

When checking theweighing performanceusing WinCT-AD4212F,
connect to a PC.

□ Disconnecting the cable

RS-232C cable(Accessory: AX-KO3590-1000)

Slide the connector sleeve (the part marked with an arrow) to unlock theconnector, and then pull out the connector.

Slide to unlock

Unlocked□ Cable pin assignments(when using the accessory cable AX-KO3590-1000)5 4 3 2 1
9 8 7 6

Inch screw #4-40UNC

D-sub 9-pin female
With the accessory cable AX-KO3590-1000
No.
Signal name Direction
Description
Internally used, power supply for
1
Vs
external equipment: GND
2TXD
OutputTransmit data
3RXD
Input
Receive data
4N.C.
5
SG
Signal ground
6DSR
OutputData set ready
7RTS
Input
Request to send
8CTS
OutputClear to send
Internally used, power supply for
9Va
external equipment: Output terminal
RS-232C factory settings
ItemSetting
Baud rate
2400 bps
Data bits
7 bitsParityEVEN
Stop bit1 bitCodes usedASCII
Data format
A&D standard format
Data output mode
Continuous output mode□ Output data (RS-232C)
Example of weighing data (A&D standard format)
ST,+ 000.

1278g

ST: Stable
Weighing value: 9 characters
US: Unstable
OL: Overload
Example of display control data
@ R E ; 1 0 CR LF

Unit: gCR

LF

: Space

Data with "@" at the beginning is control data for when a display unit isconnected. Ignore this data during communication with a PLC via RS232C.

AD-8922A

7. Frequently Used Commands (for RS-232C)
By sending the following commands externally via RS-232C, the corresponding
operation can be performed. Send commands from your PLC or PC.

□ How to set device address and termination resistor

CommandQ

AD-4212FSSIR
RS-232C cable(Accessory: AX-KO3590-1000)

PR:00

AD-8923-CC/BCD

PR:03
AD-4212F?PRT
RS-232C cable(Accessory: AX-KO3590-1000)
Settings
If all the connected devices are set to the factory settings, the weighing value
will be displayed only by connecting the cable and power supply. If thesettings have been changed, refer to details in each instruction manual,
match the RS-232C settings of the connected devices, and set the data
output of the weighing unit to continuous output mode.

□ How to check with a personal computer (PC)
Connection diagram

Data communication software
WinCT-AD4212F

AD-4212FPC
USB port

RCAL
U
SMP

Description (Function)
Set temporarily to command mode. The weighing value is
output upon data request from the host. The setting iscanceled when the power is cut.
Immediately request the weighing value. (The weighing value
is output regardless of whether it is stable or unstable. Notethat continuous output mode must be disabled.)Request the weighing value after stabilization. (The weighingvalue is output after it becomes stable. Note that continuousoutput mode must be disabled.)
Set temporarily to continuous output mode. Weighing values
are output continuously. The setting is canceled when thepower is removed. (C command to stop continuous output.)
Set to command mode. A data request from the host outputs
the weighing value. The setting is retained even after poweris cut.
Set to continuous output mode. Weighing values are outputcontinuously. The setting is retained even after power is cut.
Check the data output mode setting.
For command mode, the response is Pr,00.
For continuous output mode, the response is Pr,03.
Temporary settings by the C command or SIR command are
not reflected in this response.
Set the weighing value to zero (tare).
Enter calibration mode.
Switch the weighing speed (response characteristics).
Switch the readability.

8. How to Use RS-485
For the weighing unit, use the accessory cables AX-KO7522-500 (5 m), AXKO7622-200 (2 m), and the RS-485 interface (AD4212F-29) to enablecommunication via the RS-485 interface. With RS-485, multiple units can beconnected in a daisy-chain connection. Setting individual device addresses
allows communication with each unit by adding the device addresses to thecommands to be sent and received. The AX-KO7522-500 can supply power tothe weighing unit.

□ Connection diagram

RS-485 cable (for daisy chain)(Accessory: AX-KO7622-200)

RS-485 interface (for daisy chain)(Accessory: AD4212F-29)

RS-232C cable(Accessory: AX-KO3590-1000)□ How to connect with a PLC
Connection diagram

D-sub 9-pin (female)AD-4212F
RS-232C cable(Accessory: AX-KO3590-1000)
PLC

Weighing units

RS-485 cable (Discrete wire)(Accessory: AX-KO7522-500)□ Cable wiring (with the accessory cable AX-KO7522-500)
Connection to the weighing unit

Discrete wire

When using the accessory cable AX-KO7522-500
Lead wire
Signal name
Direction
Description
Yellow
DC+
Input / Output
Power supply (12 V DC)*
Yellow / White
GND
Input / Output
Power supply (0 V)
Blue
DATA+
Input / Output
RS-485 signal line
Blue / WhiteDATAInput / Output
RS-485 signal line
BlackFG
Frame ground* Supplies power to the weighing unit. 12 V is output when power is supplied
directly to the weighing unit using the included AC adapter. When supplying
power to the weighing unit, make sure that its voltage is correct. Once power issupplied, please do not let the terminals of discrete wire touch one another oranything around them, or do not touch them by hand.

Setting(Unit: mm)

2400 bps
7 bits
EVEN
1 bit
ASCII
0None (Open)
A&D standard format
Command mode

Remove the screws (at the four corners) to remove the rear panel.

ONOFF
Rotary switch
Set
Device address
value
0Not added
1 to F
01 to 15

ON/OFF switch
SetTermination resistorvalue
OFFNone (Open)
ON100 Ω□ Output data (RS-485)
Weighing data with "@**" at the beginning (** represents the set deviceaddress) is output. (Unlike RS-232C, data for display unit control is notoutput.)
Example of weighing data (A&D standard format)@ 0 1 S T ,+ 0 0 0 .

1 2 7 8g CR LF

Device ST: Stable Weighing value: 9 characters Unit: gaddress US: Unstable
OL: Overload: Space□ Transmission data (RS-485)
RS-232C commands can be used with a device address added to thebeginning. The unit with the matching device address will respond.
Example of sending a request command for weighing data
@ 0 1 Q CR LF
Device Commandaddress

9. Specifications

PC / PLC

USB converter(Accessory, AX-USB-9P-EX)

Settings
1 Download the WinCT-AD4212F installer from our website.
2 Install WinCT-AD4212F on your PC. Refer to the WinCT-AD4212F
Readme for the installation method.
3 Set the COM port of WinCT-AD4212F on your PC and press the START
button. The weighing value will be displayed on the PC screen.** If the weighing value is not displayed, make sure the baud rate settings ofthe weighing unit and the PC match and that the data output mode of theweighing unit is set to continuous output.

□External dimensions

RS-485 factory settings
Item
Baud rate
Data bits
ParityStop bit
Codes used
Device address
Termination resistor
Data format
Data output modeC□ How to check with an AD-8922A or AD-8923CC/BCD
Connection diagram

Settings
Adjust settings according to your PLC.
For RS-232C settings and the data format of the weighing unit, refer to “6.
Connection and Weighing Value Confirmation (RS-232C)”.
Continuous output mode is set as the factory setting and weighing data isoutput continuously from the weighing unit. To change the output mode, refer
to “7. Frequently Used Commands (for RS-232C)”.

Weighing capacity

AD-4212F6203D
510 g / 6200 g

AD-4212F10202
10200 gAD-4212F22001
22000 gReadability

0.001 g / 0.01 g

0.01 g

0.1 g

Repeatability

Main body weight0.002 g / 0.01 g
0.01 g
0.1 g
With 0.001 g
0.5 0 to0.5
2 0 to1.3 sec*
readability
300 g sec 300 g sec
With 0.01 g
300 to 1.0 300 to 1.0
1.0 sec
readability
10200 g sec 22000 g sec
100 times / second*3
Please confirm that the AC adapter type is correct
for your local voltage and receptacle type.
Approx. 30 VA (including the AC adapter)
12 V DC Approx. 0.3 A (excluding the adapter andoptional accessories)
Approx. 3.2 kg

Dustproof / waterproof

IP65 compliant

Stabilization time inseconds*1
Data refresh rate
Power supply(AC adapter)
Power consumption
Current consumption*When the stability band width is set to ±3 digits and FAST is selected
for the weighing speed (response characteristics) in a good environment.
*2 When the precision range is used.
*3 The baud rate must be set to 19200 bps or higher.
1*The screw holes to secure the exclusive weighing pan created by customers.

10. Indicator Lights
The two indicator lights on the top of the weighing unit indicate the followingstates.
Color
WhenDescription
LitPower is on.
Green
Blinks correspond to the baud rate setting *Blinking(Only when power supply begins.)
Non-weighing values (e.g., rezero, sensitivity adjustment in
Litprogress, etc.) are output.
RedWarning that impact has been applied to the weighing
Blinkingunit* See below for the number of blinks and the corresponding baud rate setting,and how to count the number of blinks.
Number of blinks
Baud rate
1600 bps
21200 bps
32400 bps
44800 bps
59600 bps
619200 bps
728800 bps
838400 bps
9115200 bps
E.g.) Number of blinks: 3 (2400 bps)
Light ON
1st illumination
2nd illumination
3rd illumination
Light OFF1 second

11. Accessories
The connection cable is not included. Please purchase the accessory cables
that are suitable for your needs.
AX-KO3590-200
RS-232C cable2m
AX-KO3590-500

RS-232C cable5m

AX-KO3590-1000

RS-232C cable

10 m

AX-KO7522-500

RS-485 cable (discrete wire)

5m

AX-KO7622-200

RS-485 cable (for daisy chain)

2m

AX-USB-9P-EX

USB converter cable set

AD4212F-29

RS-485 interface (for daisy chain)