This part of GB/T 33863 specifies the representation of alarms and conditions in the OPC unified architecture, including the representation of the information model of alarms and conditions in the OPCUA address space.
GB/T 33863.9-2021 Referenced Document
IEC 62541-3 OPC Unified Architecture - Part 3: Address Space Model
GB/T 33863.9-2021 history
2021GB/T 33863.9-2021 OPC unified architecture—Part 9: Alarms and conditions