Hello experts, I need some help here to identify a problem…

In an application using ProfiNet (CPU port) and a CP443-1 Advanced for plant communication, we are facing all configured connections dropping for that that CP.
This problem is happening once or twice a week in the last month, before was fine. And sometimes the connections come back after one or two minutes, but other times it is necessary cycle the power of the Scalance switch, in this case we cannot even ping the Scalance.

In the CP Diagnostic buffer shows that the connection was terminated by the connection partner, and in the Scalance it shows in the Statistics\Packet Errors the Jabber counter over a thousand packets for Port 1 (this one connects to the higher level system)

What could make the Scalance fault like that, perhaps the Port going bad, or maybe the connection partner (is this that the jabber indicates?)

Thanks in advance
Marciano

Yes, the diagnostic faults make sense with what we are seeing

Today by management order we had replaced the Scalance and IT department the switch on the other end.
I guess the problem will be gone now (and never know which one was bad)