I have an OPC UA device set up in Ignition 8.1 with a MySQL database for tag historization. I am using Easy Charts in Vision to create tag plots. Whenever a tag goes from "Good" data quality to "Uncertain" data quality, it appears that the tag no longer gets historized and no longer displays on the chart. Is there a way to force Ignition to historize and display all data qualities in charts?
This appears to happen frequently with tags for this device even though and I know that the instrumentation is actually good but the device flags it is as uncertain. The manufacturer has acknowledged that it is an issue; however, since it's an off the shelf device, it would be very difficult tfor them to create a fix and push it to its customers within a reasonable amount of time.