IEC 62541-9:2020 specifies the representation of Alarms and Conditions in the OPC Unified Architecture. Included is the Information Model representation of Alarms and Conditions in the OPC UA address space. This third edition cancels and replaces the second edition published in 2015 and constitutes a technical revision.
IEC 62541-9 Ed. 3.0 b:2020 History
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