Reference

Historical data

Concept

Historical data

Type	Description
IOpcEventHistoryProvider	Defines an interface which is to be used by an OpcNodeManager to provide historical event data for an OpcObjectNode.
IOpcNode	Defines an interface which can be used to access and change the properties of a node and to notify about the changes performed on it.
IOpcNodeHistoryProvider	Defines an interface which is to be used by an OpcNodeManager to provide and maintain historical values for an OpcVariableNode.
OpcAggregateType	Specifies an aggregate function of the OPC UA namespace, whose identifier GetTypeId provides.
OpcDeleteHistoryOptions	Specifies the values an IOpcNodeHistoryProvider deletes when the history of a node is deleted within a time range.
OpcEvent	Represents a snapshot of a 'Opc.UaFx.OpcEventNode'.
OpcEventFilter	Represents the filter of a monitored item for events, as defined by the EventFilter of OPC UA: the select clauses define the fields to report of each event and the where clause defines the events to report.
OpcHistoryModificationInfo	Represents the information about a modification of the history of a node: the kind and the time of the modification and the user who made it.
OpcHistoryValue	Represents a value of the history of a node.
OpcNodeHistorian	Provides and maintains the history of the values of an OpcVariableNode in memory.
OpcNodeHistory<T>	Represents a history of values kept in memory in ascending order of their timestamps, with at most one value per timestamp.
OpcNodeManager	Provides an abstract base class used to organize and maintain the address space or only a part of it.
OpcObjectNode	Defines a logical unit to represent more complex information as a OpcVariableNode.
OpcReadHistoryOptions	Specifies the values an IOpcNodeHistoryProvider provides when the history of a node is read.
OpcServer	Represents an OPC UA server which provides the address space defined by its NodeManagers to its clients.
OpcStatusCollection	Representes a collection of OpcStatus instances.
OpcValueCollection	Represents a collection of OpcValue instances.