I’ve set some tags into a timeseries chart and it comes up empty on the preview.
- Create a report
- Add a new source - tag historian query
2a - expand the available historical tags and choose the one you want - go to design and add a timeseries
- click on the timeseries, then expand data sources in the key browser
- drag tag history to data key
- expand tag history and drag fields to pen 1, pen 2, etc
- preview
Did you do this?
To answer the question in the title, no Tag History doesn’t have to be “on” to make a report, but if you’re trying to use a Tag Historian Query Data Source and you are not recording Tag History to the Database, then that could be why the chart is empty in preview: the Data Source couldn’t retrieve any data.
You don’t necessarily need Tag History, but the Timeseries Chart does need a Data Source assigned to it: a SQL Query or Scripting Data Source could also do the trick.
That being said, the Tag Historian Query is the easiest Data Source to work with.