JoiningDataVariableType 
It is to describe common sematic required for variables in a given system.
The representation of the JoiningDataVariableType VariableType in the address space is shown in the following table:
| Name | Attribute |
|---|---|
| NodeId | ns=1;i=2011 |
| NamespaceUri | http://opcfoundation.org/UA/IJT/ |
| BrowseName | JoiningDataVariableType |
| NodeClass | VariableType |
| DataType | BaseDataType |
| ValueRank | -2 |
| IsAbstract | False |
| SubtypeOf | BaseDataVariableType |
The references from the JoiningDataVariableType VariableType Node are shown in the following table:
| Reference | NodeClass | BrowseName | DataType | TypeDefinition | ModellingRule |
|---|---|---|---|---|---|
| HasProperty | Variable | EngineeringUnits | EUInformation | PropertyType | Optional |
| HasProperty | Variable | PhysicalQuantity | Byte | PropertyType | Optional |