communication between WinCC/PLC/Simulator

Hello,

please check the settings for "PG/PC Interface" in the Windows Control Panel (Switch to view "Small Icons")
Here for S7ONLINE you must select the PLCSIM Interface to communicate with the simulated S7-300.

Depend on which BusSystem you use select PLCSIM.TCPIP or PLCSIM.PROFIIBUS.

Regards

Christoph

Hi,

ok this looks like damaged HMI Connection.
First you should change the "S7ONLINE1" to "S7ONLINE"

Then check that the PLC and the WinCC RT is configured on the same network.
Do you create this connection manuel or by drag&drop the connection in the Networkview?

Regards

Christoph