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Mitsubishi FX3U-485-BD - User Manual

Mitsubishi FX3U-485-BD
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USER'S MANUAL - Data Communication Edition
FX SERIES PROGRAMMABLE CONTROLLERS
N:N Network
Parallel Link
Computer Link
Inverter Communication
Non-Protocol Communication
Programming Communication
Remote Maintenance
FX
3U
Series
Inverter Communication
(F700/A700/E700/D700 Series)
FX
3G
Series
EFX3UƒVƒŠ[ƒY
Additional Product Support
Version
FX
3U
-232-BD
RS-232C Interface
FX
2N
-232-BD
FX
1N
-232-BD
FX
3U
-232ADP(-MB)
FX-232ADP
FX
2NC
-232ADP
FX
0N
-232ADP
FX
2N
-232IF
RS-485 Interface
FX
3U
-485-BD
FX
2N
-485-BD
FX
1N
-485-BD
FX
3U
-485ADP(-MB)
FX-485ADP
FX
2NC
-485ADP
FX
0N
-485ADP
RS-485/232C Converter
FX-485PC-IF
FX
3U
-422-BD
FX
1N
-422-BD
FX
2N
-422-BD
RS-422 Interface
USB Interface
FX
3U
-USB-BD
FX
3G
-232-BD
FX
3G
-485-BD
FX
3G
-422-BD

Table of Contents

Questions and Answers

  • J
    justinrodriguezAug 13, 2025
    Should I set parameters for the N:N Network on my Mitsubishi FX3U-485-BD Controller?
    • J
      Justin CrosbyAug 13, 2025
      No, you should not set parameters for the N:N Network. Verify that the communication settings using parameters are suitable for use.
  • B
    brandtmichelleAug 17, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller because of incorrect wiring?
    • C
      cartersamanthaAug 17, 2025
      If communication is failing, it might be due to incorrect wiring. Ensure that all communication equipment is wired correctly.
  • A
    anthony44Aug 20, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller when a communication port is set twice?
    • M
      maynardwilliamAug 20, 2025
      If communication fails, it could be because a communication port is set more than once. Verify that the communication format (D8120, D8400 and D8420) is set correctly.
  • J
    Jonathan ButlerAug 25, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller when using RS and RS2 instructions?
    • A
      amytaylorAug 25, 2025
      If communication is failing, check that the RS and RS2 instructions are not being used for the same channel.
  • M
    Megan BarajasAug 28, 2025
    What to do if communication is not possible with Mitsubishi Controller when using the RS instruction?
    • K
      Katherine PerezAug 28, 2025
      If communication is not working, verify that the RS instruction is not used in the program.
  • S
    Sabrina SmithAug 31, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller when using EXTR instruction?
    • B
      Brianna WashingtonAug 31, 2025
      If communication isn't working, ensure that the EXTR instruction is not used in the program.
  • J
    Jason SanchezSep 4, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller when using VRRD and VRSC instructions?
    • A
      andres67Sep 4, 2025
      If communication isn't working, verify that the VRRD and VRSC instructions are not used in the program.
  • M
    Mr. Ruben RussellSep 8, 2025
    What to do if communication is not possible with Mitsubishi FX3U-485-BD Controller when using IVCK, IVDR, IVRD, IVWR, and IVBWR instructions?
    • Z
      zwhiteSep 8, 2025
      If communication is failing, verify that the IVCK, IVDR, IVRD, IVWR and IVBWR instructions are not being used for the same channel.

Summary

Safety Precautions

1. DESIGN PRECAUTIONS

Precautions for designing safe systems, including emergency stop and protection circuits.

2. WIRING PRECAUTIONS

Precautions to prevent electric shock and product damage during wiring.

3. STARTUP AND MAINTENANCE PRECAUTIONS

Precautions for startup, cleaning, and general maintenance of the PLC.

Outline of Communication Setting in the FX Series

3.2 Communication Setting Using Parameter Method (GX Developer)

Explains how to change parameters using GX Developer.

3.3 Communication Setting in Parameter Method (FXGP;WIN)

Explains how to change parameters using FXGP/WIN.

N:N Network

Parallel Link

6. Test Run (Communication Test)

Explains communication test procedures for Parallel Link.

7. Creating Programs

Explains how to set up and create programs for Parallel Link.

9. Troubleshooting

Provides troubleshooting procedures and error codes for parallel link.

Computer Link

6. Control Procedures and Setting Methods

Explains control procedures and setting methods for computer link.

Non-Protocol Communication (RS;RS2 Instruction)

5. Communication Setting in FX Programmable Controller

Details communication setting for non-protocol communication.

6. Creating Programs (RS Instruction)

Explains how to create programs for RS instruction.

8. Creating Programs (RS2 Instruction)

Explains how to create programs for RS2 instruction.

Programming Communication

5. Communication Setting (Initialization) in FX Programmable Controller

Details communication setting and initialization for programming communication.

6. Connection Setting for Personal Computer

Explains setting up connection for personal computers.

Remote Maintenance

5. How to Setup Modems on the PLC Side

Explains how to set up modems on the PLC side.

6. How to Setup Modems on the PC Side for Remote Access

Explains how to set up modems on the PC side for remote access.

8. Troubleshooting

Provides troubleshooting procedures and error codes for remote maintenance.

Non-Protocol Communication (FX2 N-232 IF)

5. Creating Programs

Explains how to create programs for FX2N-232IF.

7. Troubleshooting

Provides troubleshooting procedures and error codes for FX2N-232IF.

Mitsubishi FX3U-485-BD Specifications

General IconGeneral
Communication ProtocolRS-485
Max Communication Distance50m
Baud Rateup to 115200 bps
Number of Channels1
Current Consumption60 mA
Connector TypeTerminal Block
Number of Pins6
TypeRS-485 communication board
CompatibilityFX3U Series
Power Supply5 V DC

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