This ReferenceTypeis a subtype of the HasComponent ReferenceTypedefined in OPC 10000-5. Its representation in the AddressSpaceis specified in Table 22.

Table 22– HasInOutVar ReferenceType

Attributes	Value
BrowseName	HasInOutVar
InverseName	InOutVarOf
Symmetric	False
IsAbstract	False
References	NodeClass	BrowseName	Comment
Subtype of HasComponent ReferenceTypedefined in OPC 10000-5

The HasInOutVar ReferenceType is a concrete ReferenceType and can be used directly.

The semantic of this ReferenceTypeis to reference components of a Ctrl Program Organization Unitdeclared with the key word VAR_INOUTPUT.

The SourceNodeof Referencesof this type shall be a subtype of CtrlProgramOrganizationUnitTypeor an instance of one of its subtypes.

The TargetNodeof this ReferenceTypeshall be a Variableor an Objectof the ObjectType CtrlFunctionBlockType or one of its subtypes.