I have an OPC-HDA historical provider set up in Ignition. I can use system.opchda.readRaw()
to get raw historical data out of my historian, but I would like to leverage the Perspective Power Chart component. Is there a way I can address a specific OPC-HDA item directly from Power Chart?
The historian is read-only so I can't just do what I would do normally and set the history provider of my OPC tags. histprov:CygNet:/tag:{{OPC HDA SPECIFIC PATH}}
does not seeem to work.
When I run system.opchda.getAggregates("CygNet") it returns [ ]
so, PowerChart might just not be able to read the data "raw?"