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Hi,
your WinCC PC has 192.168.1.1 and your Step7 PC has 192.168.1.2? Then the IP addresses should be correct, and nettoplcsim/plcsim is reachable at IP 192.168.1.2.
You could try to start the monitoring in nettoplcsim and see if there are any connection requests. You can start it with right-click on the station you want to monitor in nettoplcsim (see attached screenshot).
If you don't need the multiple instances option, you could test with the older 0.7.2 version. Under some circumstances the new version has got some problems with WinCC.

your WinCC PC has 192.168.1.1 and your Step7 PC has 192.168.1.2? Then the IP addresses should be correct, and nettoplcsim/plcsim is reachable at IP 192.168.1.2.
You could try to start the monitoring in nettoplcsim and see if there are any connection requests. You can start it with right-click on the station you want to monitor in nettoplcsim (see attached screenshot).
If you don't need the multiple instances option, you could test with the older 0.7.2 version. Under some circumstances the new version has got some problems with WinCC.
