Engineering Units from OPC

Ignition
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1

Hello all! I'm wondering how best to get custom engineering units from OPC. Our OPC server provides UCUM engineering units and there doesn't seem to be a simple way to link this when I create a new OPC tag. For instance, one of the nodes we have provides a value (double) and Engineering units, of which the value is in degrees:

Value EUInformation [NamespaceUri="ucum.org", UnitId="0", DisplayName="deg", Description="deg"]

How could I script / link this so that the tag has the information?

Thanks,
Ethan

2

I would make a script that takes a tag path as a parameter and uses system.opc.readValue | Ignition User Manual to grab the EU and add it to a tag using system.tag.configure | Ignition User Manual and have a gateway event that runs this script as needed for each tag that is able to provide this data.