ABB 800xA Infi90 Cross Reference Function Block Link Name In ABB Harmony

Cross referencing is useful function block to pass data between different CLD sheet; both in same and/or other PCUs.
But what does the acronym in the block mean. For example, “BA.4.1” in tne image shown below?

Xybernetics ABB Harmony - Cross Referencing Function Block Link Name

The first 2 letters are to denote PCU ID. Right-click on any PCU and select Properties.

Xybernetics ABB Harmony - Cross Referencing Function Block Link Name

Xybernetics ABB Harmony - Cross Referencing Function Block Link Name

The number after the first period is the CLD document number

Xybernetics ABB Harmony - Cross Referencing Function Block Link Name

And the last number is the sheet number.

Xybernetics ABB Harmony - Cross Referencing Function Block Link Name