3 Terms, definitions, abbreviations and conventions ToC Previous Next

3.1 Terms and definitions ToC Previous Next

For the purposes of this document, the terms and definitions given in OPC 10000-1 and the following apply.

3.1.1 DataType

instance of a DataType Node that is used together with the ValueRank Attribute to define the data type of a Variable

3.1.2 DataTypeId

NodeId of a DataType Node

3.1.3 DataVariable

Variables that represent values of Objects, either directly or indirectly for complex Variables, where the Variables are always the TargetNode of a HasComponent Reference

3.1.4 EventType

ObjectType Node that represents the type definition of an Event

3.1.5 Hierarchical Reference

Reference that is used to construct hierarchies in the AddressSpace

Note 1 to entry: All hierarchical ReferenceTypes are derived from HierarchicalReferences.

3.1.6 InstanceDeclaration

Node that is used by a complex TypeDefinitionNode to expose its complex structure

Note 1 to entry: This is an instance used by a type definition.

3.1.7 ModellingRule

metadata of an InstanceDeclaration that defines how the InstanceDeclaration will be used for instantiation and also defines subtyping rules for an InstanceDeclaration

3.1.8 Property

Variables that are the TargetNode for a HasProperty Reference

Note 1 to entry: Properties describe the characteristics of a Node.

3.1.9 SourceNode

Node having a Reference to another Node

EXAMPLE: In the Reference “A contains B”, “A” is the SourceNode.

3.1.10 TargetNode

Node that is referenced by another Node

EXAMPLE: In the Reference “A contains B”, “B” is the TargetNode.

3.1.11 TypeDefinitionNode

Node that is used to define the type of another Node

Note 1 to entry: ObjectType and VariableType Nodes are TypeDefinitionNodes.

3.1.12 VariableType

Node that represents the type definition for a Variable

3.1.13 AddIn

a widely applicable feature or feature-set represented by an ObjectType that will be applied using aggregation

3.1.14 Interface

an abstract ObjectType used to specify a feature or feature-set that shall be implemented by the Object or ObjectType where it is applied to

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