PLC / OPC / Delmia Communication problem.

Hi

I am working on a Virtual Commission task where I have connected a Siemens PLC and Delmia V5.19.

I have made a small internal logic in SFC+ where I use Delmia to turn on a signal on the PLC. (This is working, but only one time)

In the connection editor the internal Delmia logic has an InOut port and the PLC has an In port.

My problem is:

When I reset the signal from the PLC I cannot set it again in Delmia. And it is not because the PLC continues reset the signal.

I use OPC scout to monitor the OPC server where I can see that the signals are set correct according to the PLC but not Delmia.

-          Delmia Register a "true" signal

-          OPC scout and the PLC register a "false" signal.

By forcing some of the signals it seems like the signal stay “true” inside the Delmia logic but do not transmit a “true” signal until it have been set to false (inside the Delmia logic not from the PLC).

Can you tell me why:

1) Delmia don't register the signal change from the PLC?

2) Delmia don't set (transmit) the signal to “true” again when it run through the logic code?

 

Hope some of you can help me.