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 "VariableTypes" Object shall not reference any other NodeClasses.

Figure 5 – VariableTypes organization

The intent of the "VariableTypes" Object 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 "VariableTypes" Object is formally defined in Table 101.

Table 101 – VariableTypes definition

Attribute	Value
BrowseName	VariableTypes
References		NodeClass	BrowseName	Comment
HasTypeDefinition		ObjectType	FolderType	Defined in 6.6
Organizes		VariableType	BaseVariableType	Defined in 7.2
Conformance Units
Base Info Core Types Folders