IEC 62541-5 Ed. 3.0 b:2020

IEC 62541-5.2020 defines the Information Model of the OPC Unified Architecture. The Information Model describes standardised Nodes of a Server’s AddressSpace. These Nodes are standardised types as well as standardised instances used for diagnostics or as entry points to server-specific Nodes. This second edition cancels and replaces the first edition published in 2011 and constitutes a technical revision. This edition includes the following changes:

– Defined ProgressEventType;

– Defined DataType called BitFieldMaskDataType;

– Delete Property SamplingRateCount in ServerDiagnosticSummaryDataType;

– Added the Property “EffectiveTransitionTime” to TransitionVariableType;

– Introduced VariableType OptionSetType;

– Added a new EventType called SystemStatusChangeEventType;

– Added properties to ServerCapabilitiesType. Added an object for operation limits. Added type OperationLimitsType containing that information;

– Added SecureChannelId to AuditActivateSessionEventType;

– Added normative Annex C defining FileType and Methods;

– Added a Method GetMonitoredItems on ServerType;

– Removed the concept of ModelParent. Added meta data for namespaces in ServerType and created types for managing that. Added representations for ModellingRules OptionalPlaceholder and MandatoryPlaceholder;

– Added new types NonTransparentNetworkRedundancyType, NetworkGroupDataType and EndpointUrlListDataType.