I have given up on this, everytime I connect with plc to my profilux, I get disconeted. There is a issue with the communication on the P3 but the problem cant be acknowledge.

I had zero problem with the PII and we could even do firware upgrade over the lan connection. Now I'm also lucky if I can do them over the USB using PLC without having to revert back to the Fujitsu flash tool over RS-232.