i have a big problem!
I assigned the IP address to the PLC 192.168.0.1 and 192.168.0.2 for the computer. After that, i set PC/PC Interface for Step 7 to the network card. In WinCC i set the parameters connection to use S7Online (the same network card).
It was working until yesterday ... now there is no connection neither Step 7 nor WinCC. I don't know why.
The firewall is deactivated.
If I use the profibus interface with a notebook i can see the CPU diagnostic and there is no error, and i see the ethernet interface is connected.
In the computer if use the accesible stations menu, the CPU appears.
Then, the PLC see the computer, the computer see the PLC but Step 7 and WinCC are not connecting.
Any idea ?
Thanks in advance.