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Jesus Torner

Unitronics and Siemens MODBUS Communication

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I have made a little project to communicate Unitronics and Siemens S7-1200 PLC's by MODBUS TCP:


Software Visilogic 9.31

Unitronics IP:

MODBUS_COMM: Connect Sockets 0 and 2 as Slave with different ID to Siemens IP Address


Siemens IP:

PLC: 1214 DC/DC/DC

Software: Tia Portal V11 SP1

PLC Fw: 2.12

Modbus function: MB_CLIENT

  • Unitronics can read DB2.DBW0 from Siemens PLC
  • Unitronics can wirte MI3..MI5 to Siemens PLC

To donwload the project click HERE

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