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Scope: Core (OPC-10000-*) All specs

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OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.6.4.3 Definition of EUInformation

Definition of EUInformation The EUInformation elements are defined in Table 23 . Table 23 - EUInformation DataType structure Name Type Description EUInformation structure namespaceUri String Identifies the organization (company, standards organization) that ... defines the EUInformation . unitId Int32 Identifier for programmatic lookup. -1 is used if a unitId is not available. displayName LocalizedText The displayName of the engineering unit is typically the abbreviation
OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model

5.6.2 Variable NodeClass

what engineering units should be used are defined in OPC 10000-8 . The DataType EUInformation is also defined in OPC 10000-8 . CurrencyUnit O CurrencyUnitType Only used for DataVariables having
OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model

7.21 VectorType

DataType TypeDefinition Modelling Rule Subtype of the BaseDataVariableType defined in 7.4 HasProperty Variable VectorUnit EUInformation PropertyType Optional Conformance Units Base Info Spatial Data VectorUnit defines the unit of each dimension ... vector. The DataType EUInformation is defined in OPC 10000-8 . Note that the Property EngineeringUnits is intentionally not used, as it would have to define the engineering unit
OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model

7.23 CartesianCoordinatesType

DataType TypeDefinition Modelling Rule Subtype of the BaseDataVariableType defined in 7.4 HasProperty Variable LengthUnit EUInformation PropertyType Optional Conformance Units Base Info Spatial Data LengthUnit defines the unit of each dimension ... cartesian coordinates. The DataType EUInformation is defined in OPC 10000-8 . Note that the Property EngineeringUnits is intentionally not used, as it would have to define the engineering unit
OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model

7.25 OrientationType

DataType TypeDefinition Modelling Rule Subtype of the BaseDataVariableType defined in 7.4. HasProperty Variable AngleUnit EUInformation PropertyType Optional Conformance Units Base Info Spatial Data AngleUnit defines the unit of each dimension ... orientation. The DataType EUInformation is defined in OPC 10000-8 . Note that the Property EngineeringUnits is intentionally not used, as it would have to define the engineering unit
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.3.2.2 BaseAnalogType

Variable EURange Range PropertyType Optional HasProperty Variable EUNumberRange NumberRange PropertyType Optional HasProperty Variable EngineeringUnits EUInformation PropertyType Optional Conformance Units Data Access BaseAnalogType The following paragraphs describe the Properties of this ... EngineeringUnits specifies the units for the DataItem 's value (e.g., DEGC, hertz, seconds). The EUInformation type is specified in 5.6.4 . The NonHierarchical References HasQuantity (see 6.5.2 ) and HasEngineeringUnitDetail
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.6.4.1 General

General EUInformation contains information about the EngineeringUnits . The intention of the OPC UA standard is not to define a set of units but a way to expose units based ... there is not a single worldwide set of units used in all industries, the EUInformation structure includes a separate field (the namespaceUri ) to identify the system on which the exposed
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.6.4.2 Extented Unit information and Quantity

Extented Unit information and Quantity Servers can enhance EUInformation by providing the Quantity and Unit model (see 6 ) and referencing from EUInformation instances to the appropriate instances for quantity ... unit. See Figure 5 for an example. Figure 5 - Enhanced EUInformation example
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

5.6.4.5 Mapping of IEC 62720 to EUInformation

Mapping of IEC 62720 to EUInformation This clause specifies how to apply the Common Data Dictionary (IEC CDD) published as IEC/TS 62720 by the "International Electrotechnical Commission ... EUInformation Structure . Note - entries of the IEC CDD reference to the "common code" from UN/CEFACT Rec. 20 if one is available. The units and their identifiers, along with
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

6.5.1 HasEngineeringUnitDetails

subtype of NonHierarchicalReferences . The semantics of this ReferenceType is to link a Variable with EUInformation DataType to its more detailed AddressSpace representation Instance of the ServerUnitType ObjectType . The SourceNode ... References of this type shall be a Variable with EUInformation DataType . The TargetNode of this ReferenceType shall be an Instance of the ServerUnitType ObjectType . The Reference has to change
OPC-10000-8 – OPC Unified Architecture - Part 8: Data Access

6.5.2 HasQuantity

subtype of NonHierarchicalReferences . The semantics of this ReferenceType is to link a Variable with EUInformation DataType to an Instance of the QuantityType ObjectType . The SourceNode of References of this type ... shall be a Variable with EUInformation DataType (typically the EngineeringUnits Property) . The TargetNode of this ReferenceType shall be an Instance of the QuantityType ObjectType . The HasQuantity is formally defined
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

6.3.7 CustomMetaDataProperties Property

shows the structure of the CustomMetaDataProperties for a SerializationScope excluding the metadata comprising the EUInformation and EngineeringUnits Properties of the AnalogUnitType and AnalogUnitRangeType Variables in the SerializationScope . Figure 10 - CustomMetaDataProperties ... lowest indices contain the semantic Properties (e.g. key="EngineeringUnits", value=EUInformation) for the Value of the represented Variable . Sub- Variables are represented with elements containing KeyValuePairs with keys