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• OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model
  6.4.25 AuditWriteUpdateEventType
  HasProperty Variable IndexRange NumericRange PropertyType Mandatory HasProperty Variable NewValue BaseDataType PropertyType Mandatory HasProperty Variable OldValue BaseDataType PropertyType Mandatory Conformance Units Auditing Write This EventType inherits all Properties of the AuditUpdateEventType ... IndexRange is provided, only the values in the provided range are shown. OldValue identifies the value that the Attribute contained before the write. If the IndexRange is provided, only