OK the operational state means that the PLC is unable to talk to the URB(it's not establishing a connection)
0- Establishing Connection (in Progress )
When you pinged the URB was that from a PC or the UniStream??
1)Trying pinging the URB from the UniStream via Uniapps->Network->Ethernet->Ping
2)You've set IP address for both the panel and CPU(your PC will use the Panel IP to communicate with the PLC, the PLC will use the CPU IP to communicate with the URB)
3) Is it an isolated URB and PLC are on an isolated network or are you going over the top??
4) how did you set the IP on the URB?