This standard Object is the browse entry point for VariableType Nodes. Figure 5 illustrates the structure beneath this Node. Only Organizes References are used to relate Objects and VariableTypes to the “VariableTypes” standard Object. The “VariableTypesObject shall not reference any other NodeClasses.

image008.png

Figure 5 – VariableTypes Organization

The intent of the “VariableTypesObject is that all VariableTypes 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 VariableTypes, because they may be well-known in the industry, such as the “BaseVariableType” defined in 7.2.

The “VariableTypesObject is formally defined in Table 84.

Table 84 – VariableTypes Definition

Attribute

Value

BrowseName

VariableTypes

References

NodeClass

BrowseName

Comment

HasTypeDefinition

ObjectType

FolderType

Defined in 6.6

Organizes

VariableType

BaseVariableType

Defined in 7.2