| Description | Corresponds to a value of cdcDGInstanceGrpIndex, thus
identifying a set of entries in cdcDGInstanceTable, having
this value of cdcDGInstanceGrpIndex. This object's value is
used only when cdcDGType is of type 'table'.
The set of entries in cdcDGInstanceTable, in turn identifies
the set of instances of the base objects, whose values need
to fetched. If the value is 0, then all instances of the base
objects will be fetched.
This object's value may be modified at any time. The change
takes effect the next time data is fetched for this data
group. |