Siemens MP277 connection with multiple PLC

[Werner]

I want to connect 2 plc's (in the same Siemens S7 project) to one HMI (siemens MP277). I am using WinCC flexible. I have done this in the past without any problems.

But now WinCC flexible reports an error. (The HMI address is not unique). This message is correct because I have defined two connection lines. One from HMI to plc 1 and one from the same HMI to plc 2.

If a make this setup in a mobile panel it works without problems...

Anybody an idea on how to solve this?

 

[Werner]

I solved the problem. I disconnected all displays from the network in netpro. One by one I connected them again. (Checking all settings while conencting them again) At first all settings in netpro looked ok. But the displays had double addresses! (Strange because netpro did not report any errors upon compile).