FX3U-422-BD is the board with a port for connecting a programming tool, GOT, or ET
Series.

1.1 Incorporated Items of Mitsubishi FX3U-422-BD

1.2 External Dimensions and Part Names of Mitsubishi FX3U-422-BD

Installation of Mitsubishi FX3U-422-BD

INSTALLATION PRECAUTIONS of Mitsubishi FX3U-422-BD

• Cut off all phases of the power source externally before starting the installation or wiring work, thus avoiding electric shock or damages to the product.

• Use the product in the environment within the general specifications described in PLC main unit manual (Hardware Edition).
Never use the product in areas with dust, oily smoke, conductive dusts, corrosive gas (salt air, Cl2, H2S, NH3, SO2, or NO2), flammable gas, vibrations or impacts, or expose it to high temperature, condensation, or wind and rain.If the product is used in such a place described above, electrical shock, fire,malfunction, damage, or deterioration may be caused.
• Use screwdrivers carefully when performing installation work, thus avoiding accident or product damage.
• When drilling screw holes or wiring, cutting chips or wire chips should not enter ventilation slits.Such an accident may cause fire, failure or malfunction.
• Do not touch the conductive parts of the product directly, thus avoiding failure or malfunction.
• Fix the expansion board securely to the specified connector. Incorrect connection may cause malfunction.

The following explains the installation method to FX3U/FX3UC Series PLC (FX3U Series PLC is used for the following example).
For removing and installing details, refer to the PLC main unit manual. However, FX3UC Series PLC manual is only available in Japanese.

2.1 Installation Method of Mitsubishi FX3U-422-BD

• Refer to the procedure 2) for configuring a new system.
• Refer to the procedure 1) for adding product to an existing system.
1) Power off the PLC.
Disconnect all the cables connected to the PLC.
Dismount the PLC from the DIN rail.
2) Using a flat blade screwdriver as shown in the right figure, lift the little dummy expansion board cover (right fig. A). Do not damage the circuit board or electronic parts.
3) Remove the dummy expansion board cover (right fig. A) in a parallel motion away from the main unit.
4) Make sure the expansion board (right fig. B) is in parallel with the main unit (right fig. C) and fix it to the expansion board connector.
5) Fix the expansion board (right fig. B) to the main unit using the M3 tapping screws of the provided (right fig. D).
Tighten to a torque: 0.3 to 0.6 N⋅m

Specification of Mitsubishi FX3U-422-BD

STARTUP AND MAINTENANCE PRECAUTIONS of Mitsubishi FX3U-422-BD

• Do not disassemble or modify the unit.
  Doing so may cause failure, malfunction or fire.
  * For repair, contact your local Mitsubishi Electric distributor.
• Do not drop the product or do not exert strong impact, doing so may cause damage.

DISPOSAL PRECAUTIONS of Mitsubishi FX3U-422-BD

• Please contact a company certified in the disposal of electronic waste for environmentally safe recycling and disposal of the product.

TRANSPORT AND STORAGE PRECAUTIONS of Mitsubishi FX3U-422-BD

• During transportation avoid any impact as the product is a precision instrument.
  Check the operation of the product after transportation.

3.1 Applicable PLC of Mitsubishi FX3U-422-BD

Only one function expansion board can be used for one main unit.
Two or more FX3U-422-BD cannot be used, or other expansion boards such as FX3U-232-BD or FX3U-485-BD cannot be installed/used together with FX3U-422-BD.

3.2 General Specifications of Mitsubishi FX3U-422-BD
General specifications are equivalent to the PLC main unit. For general specifications, refer to the following manual.
However, since the product is not isolated between communication lines and the CPU of main unit, please don't perform any dielectric withstand voltage test and insulation resistance test to this product. 

3.3 Power supply specifications of Mitsubishi FX3U-422-BD
5V DC, 20 mA is supplied as the power from the main unit. However, current consumption becomes higher depending on the connected peripheral equipment.

3.4 Communication specifications of Mitsubishi FX3U-422-BD

Our company (Kollewin Technology CO., Limited) have a new product, named FX3U-422-BD.

It is 100% compatible with Mitsubishi original FX3U-422-BD.

Part#: FX3U-422-BD

The unit price is USD29.90/pc  

USER'S MUNUAL PDF of communication board FX3U-422-BD:

RS-422 COMMUNICATION BOARD FX3U-422-BD

Specification of communication board FX3U-422-BD:

Description of communication board FX3U-422-BD:

• The FX3U-422-BD interface adapters provide a second RS422 interface for connection of an additional device to the controller (programming unit or operator terminal).
• This is OEM product, not Mitsubishi original part.

More communication boards, please click below links:

FX2N-485-BD+

FX2N-485-BD

FX2N-422-BD

FX2N-232-BD

FX1N-485-BD

FX1N-422-BD

FX3U-485-BD

FX3U-422-BD

FX3U-232-BD

FX3U-USB-BD

FX2N-4DA

More pictures of communication board 

Please feel free to contact me for any question!

Contact person: Miss Nancy

The FX2N-422-BD for RS422 communication board (422BD) can be connected to an FX2N Series programmable
controller, and used as a port for programming and monitoring tools.
When the 422BD is used, two DU Series units can be connected to the FX2N or a DU Series unit and a
programming tool. However, only one programming tool can be connected at once.
Only one 422BD can be connected to a base unit. Also, the 422BD cannot be used together with the
FX2N-485-BD or the FX2N-232-BD.

External Dimensions of Mitsubishi FX2N-422-BD

Dimensions : mm (inches) Accessory : M3 self-tapping screws ´ 2


Suitable Products and Connecting Cables for Mitsubishi FX2N-422-BD

*1: When using other products or cables please check the product manual for required 5V DC supply.
*2: FX-2PIF can not be connected to the FX2N-422-BD.

Mounting procedure for using Mitsubishi FX2N-422-BD

Specification of Mitsubishi FX2N-422-BD
5.1 General specification of RS422 interface PLC communication Board
General specifications are the same as those for the FX2N series programmable controller.

5.2 Power supply specification of RS422 interface PLC communication Board
The 422BD requires 60mA 5V DC supplied from the programmable controller.
The 5V DC power capacity of the programmable controller is 290 mA maximum. This is used by peripheral units and special function blocks as well as the 422BD. Make sure that the power capacity does not exceed this value. For the details, refer to the hardware manual.
For additional current consumption increases, refer to section 3.

5.3 Performance specification of RS422 interface PLC communication Board

Cautions for using Mitsubishi FX2N-422-BD
1) When using any 422BD, do not use any other communication format or parameters. If the communication format or parameters is set, programming is not possible.
2) Only one programming tool (such as FX-10P, FX-20P, etc.) should be connected to either the programming port or the port provided on the 422BD. If a programming tool is connected to both connectors, the following may occur.
a) The program inside the programmable controller may not be consistent with the program inside the programming tool. If the program is modified or the set value for timers or counters is modified, a part of the program may be damaged and the programmable controller may malfunction.
b) When the sampling trace function of the programmable controller is used from both ports, the correct sampling trace result cannot be obtained.

Diagnostics of Mitsubishi FX2N-422-BD
1) Make sure that the cable connected is correct.
2) Make sure that the programmable controller is connected, and that the POWER LED is on.
3) Make sure that the communication format is in the initial state (D8120 = K0). Check using a peripheral unit how the communication parameters are set. If the no protocol (RS instruction) or the dedicated protocol is selected, set the parameters correctly using the peripheral unit.
4) Make sure that the RS, VRRD or VRSC instruction or N:N network setting program is not used in the program. If such an instruction is used in the program, delete it, turn off the power of the programmable controller, then turn it on again.
5) If the special auxiliary relay M8070 or M8071 is turned on, turn off the relay using the peripheral unit, turn off the power of the programmable controller, then turn on the power again.

Our company (Kollewin Technology CO., Limited) have a new product, named FX2N-422-BD.

It is 100% compatible with Mitsubishi original FX2N-422-BD.

Part#: FX2N-422-BD

The unit price is USD17.65/pc 

USER'S MUNUAL PDF OF RS422 interface PLC Communication Board FX2N-422-BD:

FX2N-422-BD-USER'S MANUAL

Specification of communication board FX2N-422-BD:

Description of communication board FX2N-422-BD:

• The FX2N-422-BD for RS-422 Communication Board(422BD)can be connected to an FX2N series programmable controller, and used as a port programming and monitoring tools.
• This is a Replacement of Mitsubishi FX2N-422-BD Programmable Controller.
• This is OEM product, not Mitsubishi original part.

More communication boards, please click below links:

FX2N-485-BD+

FX2N-485-BD

FX2N-422-BD

FX2N-232-BD

FX1N-485-BD

FX1N-422-BD

FX3U-485-BD

FX3U-422-BD

FX3U-232-BD

FX3U-USB-BD

FX2N-4DA

More pictures of Communication Board 

Please feel free to contact me for any question!

Contact person: Miss Nancy