I am having an issue where I am trying to pull a tag Contrologix value from our TOP server and I get a BAD VALUE error.
When I setup the same path on our default OPC tag gateway it works fine and tags on other other PLC's from the TOP server work without issue.
What's the quality code? Does the tag have a value and a bad quality or just a bad quality?
If you subscribe to the same tag in the quick client what happens? What about another UA client like UaExpert?
Sounds like you need to talk to TOP/KEP server support.