This OPC UA Variable, of DataType Byte, represents the BACnet property Priority_For_Writing.
This property provides a priority to be used by the command prioritization mechanism. This allows loop objects to be used to control the commandable property of an object. In particular, it identifies the particular priority slot in the Priority_Array of the Manipulated_Variable_Reference that is controlled by this loop. See the BACnet specification for the specific range of allowed values.