In the OPC UA definition it is possible to specify an index range within an array to return just a portion of that array's members. You can specify a starting and ending member element number. This is done outside of the item's Node Address. The method Kepware has used to implement a partial array read is through a non-compliant, custom method.

The OPC Foundation specifies a standard compliant approach in Part 4, Section 7.22

https://reference.opcfoundation.org/Core/Part4/v104/docs/7.22

The Softing OPC UA client features this as an "index range" specification field, but OPC term is "NumericRange"

I would like to see this get added to the Tag Configuration for OPC UA tags within Ignition.