I am working on a LabVIEW SCADA system which connects to a Eurotherm DCS using the LinOPC server. After startup, all tags with unchanging values (eg setpoints, booleans) return a default value and bad status in the (LabVIEW 7.1) tagengine. Once the value of the tag has changed (either from the DCS or by writting a value [if writeable] the status becomes good and the correct value is returned. I have tried changing the engine update parameters without success. Connecting to the tags in the LinOPC server using NIs Server Explorer produces similar results, but connecting using Eurotherm's iTools OPC Scope returns all values. Has anyone experienced this problem or know of a solution/work around?
