The VariableSetType is used for storing additional sample data that was created during a run. It is formally defined in Table 76.

Table 76 – VariableSetType Definition

Attribute	Value
BrowseName	VariableSetType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of the SetType defined in 7.2.5
0:HasComponent	Variable	<VariableSetElement >	BaseDataType	BaseVariableType	OP
0:HasComponent	Object	<SetElement>		BaseObjectType	OP
Conformance Units
LADS VariableSetType

VariableSetElement: Placeholder for vendor-specific properties.

SetElement: Placeholder for one or more objects that hold vendor-specific data that was created during a run. Objects follow these rules:

• The type of each object shall be BaseObjectType. Each object may have arbitrary child nodes.
• The structure and data contained in each object are vendor specific.
• It is up to the vendor whether the list contains objects with the same kind of data or objects of different kinds of data.
• The structure may be nested.

For objects and properties added to the VariableSet, vendors shall use only types from the OPC UA base specification, specifically:

• Vendors shall use only the built-in data types defined in OPC UA Part 10000-6 (https://reference.opcfoundation.org/Core/Part6/v104/5.1.2)
• Vendors shall use only simple variable types and simple object types (i.e., types that do not define child nodes beneath them).

Vendors should annotate each node with a reference to a dictionary entry.

Vendors should specify the structure in their documentation. See Annex D for a typical example.