5.3 References

5.3.1 Overview

Figure 2 illustrate the references defined by this specification (outlined in red). Each reference type is described in their own sections.

5.3.2 HasHistoricalConfiguration ReferenceType

This ReferenceType is a concrete ReferenceType that can be used directly. It is a subtype of the Aggregates ReferenceType and will be used to refer from a Historical Node to one or more HistoricalDataConfigurationType Objects or HistoricalEventConfigurationType Objects.

The semantic indicates that the target Node is “used” by the source Node of the Reference. Its representation in the AddressSpace is specified in Table 7.

5.3.3 HasCurrentData ReferenceType

This ReferenceType is a concrete ReferenceType that can be used directly. It is a subtype of the NonHierarchicalReferences ReferenceType and 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 node in 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 or Property

5.3.4 HasCurrentEvent ReferenceType

This ReferenceType is a concrete ReferenceType that can be used directly. It is a subtype of the NonHierarchicalReferences 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.

Its 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 has the EventNotifier Attribute set to TRUE.