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18 result(s) for Union

• OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model
  12.2.12.12 Union
  Union The representation in the AddressSpace of the Union DataType is defined in Table 208 . Table 208 - Union definition Attributes Value BrowseName Union IsAbstract TRUE References NodeClass BrowseName DataType TypeDefinition
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  5.8.3 DataType NodeClass
  encoding information for DataTypes . The abstract DataTypeDefinition DataType is defined in 8.47 . Structure and Union DataTypes The Attribute shall be mandatory for DataTypes derived from Structure and Union . For such
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  5.8.5.2 DataTypeRefinement Objects
  field when IsOptional of that field is true. If the StructureType is Union or UnionWithSubtypedValues then the IsDisabledOptionalField may be used on any field and the HasFieldDescriptionSetMandatory shall ... IsDisabledOptionalField implies that the DataType of the field shall not be used in the Union using the DataTypeRefinement . In Figure 20 , an example is given. The structure of X:SuperDataType
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  7.27 IsDisabledOptionalField
  that implies that the DataType of the field shall never be used in the Union . This ReferenceType shall only be applied to fields declared as optional, i.e., either fields having ... where the StructureType is StructureWithOptionalFields; or fields of Structured DataTypes where the StructureType is Union or UnionWithSubtypedValues. Note: As the ReferenceType defines that the field shall not be provided, adding
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  8.48 StructureDefinition
  direct supertype of the DataType . This might be the abstract Structure or the Union DataType . StructureType StructureType An enumeration that specifies the type of Structure defined by the DataType ... data type is encoded into a value if the data type is a Union . Fields StructureField [] The list of fields that make up the data type. This definition assumes
• OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model
  8.51 StructureField
  field. When used by a StructureDefinition with a structureType of Structure, StructureWithOptionalFields or Union then the datatype shall be a concrete DataType , BaseDataType DataType or Structure DataType If the structureType ... present in an occurance of the Structure DataType . If the structureType is Structure or Union this field shall be FALSE and shall be ignored. If the structureType is StructureWithSubtypedValues
• OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model
  12.31 DataTypeSchemaHeader
  entry in this array maps to NamespaceIndex 1. structureDataTypes StructureDescription[] Description of Structure and Union DataTypes used in the data that follows the DataTypeSchemaHeader . This includes nested Structures . DataType NodeIds
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  5.1.7 Structures and Unions
  special subtypes of Structure where only one field value is encoded. All subtypes of Union are concrete. The remainder of the rules for Structure also apply to Unions
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  5.2.8 Unions
  encoded as a UInt32. The switch field is the index of the available union fields starting with 1. If the switch field is 0 then no field is present ... value greater than the number of defined union fields the encoders or decoders shall report an error. A Union with no fields present has the same meaning as a NULL
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  5.4.2.1 General
  element of an array. When using the CompactEncoding , the field of a Structure or Union is omitted if value is equal to the default value for the built-in type
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  5.4.2.16 ExtensionObject
  JSON object as described in: Structure (see 5.4.6 ); Structure with optional fields (see 5.4.7 ); Union (see 5.4.8 ); with the UaTypeId field inserted into the JSON object. Decoders shall report decoding
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  5.4.8 Unions
  name-value pairs. The order specified by the DataTypeDefinition is not preserved when a Union is serialized in JSON. Table 48 - JSON Object Definition for a Union Name Description SwitchField ... field is only present in the CompactEncoding . The identifier for the field in the Union which is encoded as a JSON number. The valid values for this field follow
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  F.13 DataTypeField
  optional. The default value is false. This field is not specified for Enumeration, Union or OptionSet DataTypes. AllowSubTypes Boolean For backward compatibility, this field shall be omitted if the DataType
• OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings
  H.10 Unions
  name-value pairs. The order specified by the DataTypeDefinition is not preserved when a Union is serialized in JSON. The SwitchField may not appear as the first field. Table ... JSON Object Definition for a Union Name Description SwitchField The identifier for the field in the Union which is encoded as a JSON number. The valid values for this field
• OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub
  6.2.3.2.4 FieldMetaData
  strings are defined through a DataType referenced through the dataType field. (3) Structure and Union DataTypes are encoded as ExtensionObject . The encoding rules are defined through a DataType referenced through ... field of the DataSetMetaData base type DataTypeSchemaHeader . If the DataType is a Structure or Union , the encoding and decoding description of the Structure DataType is provided through the structureDataTypes field
• OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub
  7.2.4.5.11 RawData field encoding
  field if it were present. If the DataSet field or Structure field is a Union , the encoding of the selected field is padded with bytes with value zero ... size of the longest Union field, when encoded using the rules in this chapter. The case when no field is selected is treated as if there was an encoded field
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  10.16 ConnectionEndpointDefinitionDataType
  defined in Table 154 . Table 154 - ConnectionEndpointDefinitionDataType structure Name Type Description Allow Subtypes ConnectionEndpointDefinitionDataType Union Subtype of Union defined in OPC 10000-5 Parameter 2:ConnectionEndpointParameterDataType Parameter holds the parameters ... ConnectionEndpointDefinitionDataType IsAbstract False References NodeClass BrowseName DataType TypeDefinition Other Subtype of the 0:Union defined in OPC 10000-5 ConformanceUnits UAFX AutomationComponent Base UAFX ConnectionManager Base
• OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model
  F.1.15 NodeIdentifier
  F.1.2.2 . The NodeIdentifier DataType is formally defined in Table F.26 . Table F.26 - NodeIdentifier union Name Type Description NodeIdentifier Union Subtype of Union defined in OPC 10000-5 Node 0:NodeId ... NodeIdentifier IsAbstract False References NodeClass BrowseName DataType TypeDefinition ModellingRule Subtype of the 0:Union defined in OPC 10000-5 ConformanceUnits UAFX ConnectionManager File Configuration