Have AF PI Point attributes that reference another AF attribute use the retrieval methods of that attribute
When an AF PI Point attributes references another AF attribute that has RelativeTime, TimeMethod, or TimeRangeMethod set, use the settings of the referenced attribute.
For example:
Attribute A references PI tag B with a RelativeTime of -1h.
Attribute C referencing attribute A will give the value of B at the query time, not offset by -1h.
As I downvoted this, I believe I owe it to the OP as to my reason: this would produce breaking code in my applications. I frequently use relative attribute references with the PIPoint DR, and I specifically do so for different TimeRangeMethod, etc. Oftentimes I have many static string attributes used to compose the name of a long tag name, and a relative reference makes this easier to maintain.
As Rick mentioned, this breaks existing applications. The purpose of the attribute reference option in the PI Point Data Reference is to keep from having to re-specify tags in multiple attributes when different methods are needed for the same point.
Perhaps the feature you are looking for is something we refer to as Attribute Aliasing (not yet implemented) - which allows you to specify to use a different attribute as the source for the value.
