What does the lock trait mean in the tag browser? I only see it on OPC tags, but not on expression tags? I am still getting values from the OPC tags.
If I use the expression function: IsAlarmActiveFiltered, I am not able to use the tag path of any tag with a lock trait since this result in a “Bad_NotFound”. However, if I use the tag path of any of the memory tags without the lock trait then the expression function successfull evaluates the tag.
Is there something I am missing here? The lock trait is not mentioned in the documentation as far as I can see…
Any clarification on this subject is appreciated