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Mitsubishi FX5U “Modbus RTU” Autonics TK4S Tutorial

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Hello everyone, in the previous post guided you to use PLC FX5U to connect with Omron E5CC Controller, today will continue to write a tutorial for you to connect to Autonics Controller TK4S via Modbus RTU.

To be able to communicate using Modbus RTU, we need to choose Model TK4S with RS485, in this project I use TK4S-T4SN.

Mitsubishi FX5U & Autonics TK4S “Wiring Diagram”

Autonics TK4S Modbus RTU Setting

We need to set the parameters as shown in the table below so that Autonics TK4S can communicate with Modbus RTU

Autonics TK4S Registers Address

>>> Set Temperature Address = 0000 (hex)

>>> Read Present Value Address = 03E8 (hex)

Mitsubishi FX5U Modbus-RTU Configuration

We need to set the same communication parameters as set in Autonics TK4S

PLC Programming

+ Auto Read / Write Distribution

+ Set Temperature Command

+ Current Temperature Monitoring

Video Tutorial


Related Software and Documents

>>> Download GX Works3 for PLC Mitsubishi Programming

>>> Download Autonics TK4S Manual PDF (Password Extract:

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