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Scope: Core (OPC-10000-*) All specs

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OPC-10000-9 – OPC Unified Architecture - Part 9: Alarms & Conditions

8.2 AlarmState Variable

provide a summary of the Alarms associated with the parent Variable or Object (the Source of the HasComponent Reference for this instance) Table 142 - AlarmStateVariableType definition Attribute Value BrowseName AlarmStateVariableType
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

5.3.3 HasCurrentData ReferenceType

will be used to refer from a HistoricalDataNode to a Node that is the source of the data being historized by the Source Node. Typically, this node is an external ... another Server . Its representation in the AddressSpace is specified in Table 8 . The Source node of this reference type shall be a HistoricalDataNode. The Target node shall be any Variable
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

5.3.4 HasCurrentEvent ReferenceType

ReferenceType and will be used to relate HistoricalEventNode to a Node that is the source of the data being historized. Typically, this node is an external node in another Server ... representation in the AddressSpace is specified in Table 9 . The Source node of this reference type shall be a HistoricalEventNode. The Target node shall be any Object or View that