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PLC Inovance “Modbus RTU” Omron E5CC Tutorial

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Hello friends, temperature monitoring and storage in the production environment of the factory today is a very important need. We can use a heat meter that supports Modbus-RTU RS485 communication (supports communication distance up to 1200m) to do this.

Today will guide you to use PLC Inovance H3U-3232MT to connect to Omron E5CC Controller via Modbus-RTU in the simplest and easiest way.

PLC Inovance & Omron E5CC “Connection Diagram”

+ Need to buy Omron E5CC Controller with RS485 support (In this project uses Model E5CC-RX2ASM-802)

Note: If the communication distance is >50m, there is no need to use a 120Ω Terminal Resistor

Omron E5CC Modbus-RTU Parameters Setting

In order for Inovance PLC to monitor and control Omron E5CC with Modbus-RTU, we need to install the following communication parameters for Omron E5CC controller:

Omron E5CC Modbus Registers Address

>>> Present Value (PV) Address = 2000 (hexa)

>>> Setting Value (SV) Address = 2103 (hexa)

PLC Inovance Modbus-RTU Configuration

We need to set the Modbus communication parameters of PLC Inovance the same as the installed Omron E5CC Controller.

PLC Inovance Modbus-RTU Example

+ Add Modbus Config

+ Modbus Master Config & Program

Detailed Instruction Video



+ PLC Inovance Programming Software Download
+ Omron E5CC Manual PDF Download

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If you need assistance in using PLC Inovance to connect and monitor Omron E5CC Controller, please comment below the article, will answer you when possible.

Thanks and Best Regards!

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