IEC-61850 ACSI -4

Common ACSI types - ObjectReference Instances of classes in the hierarchical information model (ACSI class hierarchy of logical device, logical node, data, data attributes) shall be constructed by the concatenation of all instance names comprising the whole path-name of an instance of a class that identifies the instance uniquely. The type of the ObjectReference shall be as specified belowObjectReference syntax Common ACSI types ServiceError type The service error code for negative service responses (originated within the server) shall be as specified below Common ACSI type..........