Hi there.

I’m new in communication between HMI Siemens and PLC Simatic S7-200. I need to communicate a CPU 226XM with a HMI TP270 and I don't know how to do this. May anybody help me please? I need MPI cable pin-out too. Thanks a lot for your help.

Chamo PLC

 

Pinout of the cable:

3---3
8---8
5---5 (Connected to the shield)

SW adjustments (either on proTool or WinCC flexible):
1. Choose PLC address (default CPU address is 2)
2. Adjust baudrate to that of the PLC
3. Choose s7-200 driver on the HMI program.