7.3.9 VariableSetType ObjectType Definition

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

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.