8 Standard Objects and their Variables ToC Previous Next

8.2 Objects used to organise the AddressSpace structure ToC Previous Next

8.2.6 ObjectTypes ToC Previous Next

This standard Object Node is the browse entry point for ObjectType Nodes. Figure 4 illustrates the structure beneath this Node showing some of the standard ObjectTypes defined in Clause 6. Only Organizes References are used to relate Objects and ObjectTypes to the “ObjectTypes” standard Object. The “ObjectTypesObject shall not reference any other NodeClasses.

readme_files/image007.png Figure 4 – ObjectTypes organization

The intention of the “ObjectTypesObject is that all ObjectTypes of the Server are either directly or indirectly accessible browsing HierarchicalReferences starting from this Node. However, this is not required and Servers might not provide some of their ObjectTypes because they may be well-known in the industry, such as the ServerType defined in 6.3.1.

This Object also indirectly references the BaseEventType defined in 6.4.2, which is the base type of all EventTypes. Thereby it is the entry point for all EventTypes provided by the Server. It is required that the Server expose all its EventTypes, so a client can usefully subscribe to Events.

The “ObjectTypesObject is formally defined in Table 91.

Table 91 – ObjectTypes definition

Attribute Value
BrowseName ObjectTypes
References NodeClass BrowseName Comment
HasTypeDefinition ObjectType FolderType Defined in 6.6
Organizes ObjectType BaseObjectType Defined in 6.2
Conformance Units      
Base Info Core Types Folders      

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