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

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

D.3.2 Server status mapping

Server status values with the exception of UA A & C Server status values Unknown and Communication Fault. These both map to the A&E COM Server status value
OPC-10000-11 – OPC Unified Architecture - Part 11: Historical Access

5.2.2 HistoricalDataConfigurationType

ExceptionDeviation is a percentage of EURange ( EURange is defined in OPC 10000-8 ). UNKNOWN 4 ExceptionDeviation type is Unknown or not specified. Its representation in the AddressSpace is defined