Ignition Edge does not include database or transaction group support which means that it must rely on the tag history queries for displaying process related events and tag history data at the panel. This would also apply to any store and forward data that needed to be sent to an Ignition server after a network outage. All process data at that point would have to be retrieved from the tag history.

I would request that functionality be added to the existing tag history query that would allow a user to specify that all tags for a particular scan class should be recorded as a grouped entry. This way the query result would return a clean snapshot of the groups tag values for each event. For example given the following entries:

Timestamp: 03/03 04:41:20:41 recorded values: 1.3, 2.3, 3.3

Timestamp: 03/03 04:41:53:595 recorded values: 1.4, 2.4, 3.4

Timestamp: 03/03 07:42:05:565 recorded values: 1.6, 2.6, 3.6

The current tag history query returns about 9 separate entries (one set per timestamp for each tag?). Adjusting the current tag history query settings does not resolve this.

The desired result would be for it to return just the 3 sets that were actually entered at the time the scan class was triggered. See the attached images for examples.