Unified Automation Forum

If I connect in the same subnet to the server, it works

if I try to connect to my server on a plc through 1:1 NAT I get "BadCommunicationError" I found an article that this issue is caused by client implementation.

Is there a setting in UA Expert to make the connection possible

KR

Hi,

first part of the analysis: can you ping the UA Server's IP?
second part: can you ping the UA Server's name?

OPC UA requires a functional network infrastructure, in the best case with a functional name resolution (DNS). If all that is running fine, give it a try with UaExpert again.