Unified Automation Forum

Hello,

I am beginner in the OPC UA world.

Are there builtin nodes for physical units like Volt, Pascal, metre, ...?
If there were none, how can I express a physical unit, maybe as a string like "m/s2"?

Thanks
kaippp

Hi,

The AnalogItemType in OPC UA defines a Property EngineeringUnits with the DataType EUInformation. This DataType contains a display name e.g. 'm/s2' but also a UnitId that can be processed by algorithms. The UnitIds are defines in OPC UA Part 8 - Data Access

See also:
http://documentation.unified-automation ... b69925c461


Best Regards,
Unified Automation Support Team

Hi UA Support Team,

Thanks for the answer.
I now have a good understanding about EngineeringUnits.

Best Regards,
kaippp