Some functions don't work properly when the measurement tag and the signal reference are not the same

GPA Products openHistorian
1

Rel. 2.8.157. I created a measurement with different the tag and the signal reference (‘ABC/PV’ and ‘ABC/PV.CV’). Grafana doesn’t display data for this measurement, moreover it doesn’t display data for the rest of measurements configured for a panel. It seems the SampleFunctions tool doesn’t process such tag too. The OH web interface processes such tag normally.

2

Are you trying to enter the tag by its name in Grafana? There are some restrictions that point tag names have, for example, they won’t include a slash “/”.

Try a filter expression instead:

FILTER ActiveMeasurements WHERE SignalType='FREQ'
3

Will consider it, thanks. But the slash is commonly used in SCADA/OPC tags. Grafana is little bit beside of the process control application area, as we know.