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kdb asked

Modbus communication to Siemens S7


I am working on communication between Cerbo GX and the siemens plc 1510.
This runs on modbus TCP and the reading is already working.
However, writing does not work. Does something need to be set somewhere high?
I am currently testing the relay 2 of the cerbo. I write the value in the data block and it is not reflected on the cerbo. Does anyone have experience with this.

With siemens, the MB-Client block is where you enter the correct ID - length register.
I only write to the rewritable register

thank you in advance

Modbus TCPcommunication protocol
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kevgermany avatar image kevgermany ♦♦ commented ·

Moved to modifications space..

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Modbus TCP Basics

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