java.net.NoRouteToHostException: No route to host: connect

Ignition
1

Hello,

I’m running Gateway version 7.7.3 on my laptop which is connected to an AB PLC. After configuring the connection to the PLC, I try to run the Quick Client, however, the Ignition OPC-UA Server itself is Faulted. The error message is: java.net.NoRouteToHostException: No route to host: connect.

According to the java docs this means:
Signals that an error occurred while attempting to connect a socket to a remote address and port. Typically, the remote host cannot be reached because of an intervening firewall, or if an intermediate router is down.

However, this is all running on a single laptop. Another post suggested that the protocol stack in windows might shut down if nothing is connected, however I’m connected to the PLC via a switch.

Any ideas? Why would this error come up if this is running on a single machine?

Thanks in advance for your help!

2

Eventually found the source of the issue:

Configure -> OPC-UA: Settings -> Server: Endpoint address
The address was set to some other IP, so I had to change it to the static IP I set for the LAN adapter.