7 OPC UA Types and Instances

7.4 IWwSubUnitsType InterfaceType Definition

The IWwSubUnitsType provides a list of subUnits and is formally defined in Table 16.

Table 16 – IWwSubUnitsType Definiton

Attribute	Value
BrowseName	IWwSubUnitsType
IsAbstract	True
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the BaseInterfaceType defined in OPC 10001-7

Each <SubUnit> object with Interface IWwBaseStateType shall be put into this object. It represents an instance of a state. For example, a CNC machine can have two places where independent jobs are produced. Then there are two <SubUnit> Objects. They may be named “Place_1” and “Place_2”.

The components of the IWwSubUnitsType have additional subunits which are defined in Table 17.

Table 17 – IWwSubUnitsType Additional Subcomponents

Source Path	Reference	NodeClass	BrowseName	DataType	TypeDefinition	Others
<SubUnit>	0:HasInterface	ObjectType	IWwBaseStateType