Delta Time Expression

The Delta Time properties are used to time-shift tag values.

Delta Time Expression: The duration (in seconds) of time-shift the tag. The M (minutes), H (hours), and D (days) units can be used. A tag’s values can also be used as the source of the time-shift. Click the drop-down to open the Tag Browser (note tag name must be pasted into the field).

Delta Time % Change: If using a tag for delta time expression (most likely a calculated tag), the percent change between points that must be exceeded before updating the value of the time shift. Defaults to 5.