Multi-device Modbus RTU Tia Portal

Modbus RTU protocol is an open protocol, using RS-232 or RS485 physical transmission and Master-Slave model. This is a protocol that is widely used in many fields such as BMS (Building Management Systems), automation, industry, electricity, …. Surely you will wonder, why this Modbus protocol It’s so popular, wherever you go, what device you touch, almost always have this protocol.

But to get multi-device signals, we often have to write over and over again, and Siemens does not support the function of reading multiple Modbus RTU devices at the same time. So I built this function to be able to read multiple Modbus RTU devices without having to pay much attention to the program.

The purpose is to help fast processing, reduce the process of device programming. The program Modbus RTU applies to Tia Portal and S7-1200/S7-1500.

Function Block

Note: Everyone can function block contact me to get the program file if needed

Read more: Link

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