Hello everyone,
I am using Ua Client on the same PC where I am running the B&R simulator. When I try to connect to the node, the application gives me this error.
The strange thing is that if I’m not in the simulator, communication works fine, but when I’m in simulation mode, using the same program I’m using, one of my colleagues manages to run everything smoothly on his PC. Does anyone have any idea what could be causing this?
Are you sure you don’t have some other OPC UA server running on the port the ArSim is trying to open the OPC UA server to? Some software run OPC UA servers on the default OPC UA port of 4840 and if some other software has that already reserved the ArSim OPC UA server does not start.
You could check the “Connectivity” log from the logger to see if the OPC UA server is not able start properly. If there is a message stating that the OPC UA server could not be started you either need to stop the software currently using the port, or configure the Automation Studio project to use a different port for OPC UA.
This older thread might have some more information:
AS4.12 - mappView similation Connection to configured OPC UA server failed
Thank you for your support,
there was another server running on the same port.
