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

27 result(s) for ExtensionObject

OPC-10000-3 – OPC Unified Architecture - Part 3: Address Space Model

8.48 StructureDefinition

DataType is only used inside nested Structures and is not directly contained in an ExtensionObject , the DefaultEncodingId is allowed to be null. If the DataType is abstract the DefaultEncodingId shall
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.38.2 Common StatusCodes

requested operation. Bad_CommunicationError A low level communication error occurred. Bad_DataTypeIdUnknown The ExtensionObject cannot be (de)serialized because the data type id is not recognized. Bad_DecodingError Decoding halted
OPC-10000-4 – OPC Unified Architecture - Part 4: Services

7.40.2.3 EncryptedSecret Format

TypeId of a DataType Node as a prefix as defined for the ExtensionObject encoding in OPC 10000-6 . The general layout of the EncryptedSecret is shown in Figure 39 . Figure ... Table 183 . The first three fields TypeId , EncodingMask and Length belong to the ExtensionObject encoding defined in OPC 10000-6 . Table 183 - EncryptedSecret layout Name Type Description TypeId NodeId
OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model

12.34 EnumDescription

DataType is an Enumeration . If the builtInType is one of the UInteger DataTypes or ExtensionObject , the DataType is an OptionSet . Its representation in the AddressSpace is defined in Table
OPC-10000-5 – OPC Unified Architecture - Part 5: Information Model

12.36 UABinaryFileDataType

Binary encoded file. The content of the file is the UABinaryFileDataType encoded as ExtensionObject . The file-specific metadata is provided by the DataTypeSchemaHeader which is the base type
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.1.2 Built-in Types

fields set to default. Human readable text with an optional locale identifier. 22 ExtensionObject Yes All fields set to default. A structure that contains an application specific data type that ... abstract types defined in OPC 10000-3 and OPC 10000-4 . However, the ExtensionObject and Variant types are defined in this document. In addition, this document defines a representation
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.1.7 Structures and Unions

present in the field. In these cases, the values are serialized as an ExtensionObject. If IsOptional =FALSE then the field value is encoded directly according to the rules ... IsOptional field is to be interpreted. A field is serialized as an ExtensionObject if a field has a DataType set explicitly to Structure. Unions are special subtypes of Structure where
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.1.8 ExtensionObject

ExtensionObject An ExtensionObject is a container for any Structure and Union DataTypes . The ExtensionObject contains a complex value serialized as a sequence of other DataTypes. It also contains an identifier ... Structure where AllowSubTypes =TRUE (see F.12 ). In all of these cases, the ExtensionObject provides an identifier that allows a decoder to know if it understands the Structure contained with
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.1.9 Variant

Variant A Variant is a union of all built-in data types including an ExtensionObject . Variants can also contain arrays of any of these built-in types. Variants are used
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.1.10 Decimal

Decimal is encoded in a Variant the built-in type is set to ExtensionObject . Decoders that do not understand the Decimal type shall treat it like any other unknown Structure ... Structure then the type description shall set the DataType for the field to ExtensionObject
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.1 General

advance knowledge of the services and structures that they support. An exception is an ExtensionObject which provides an identifier and a size for the Structured DataType structure it represents. This
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.2.15 ExtensionObject

ExtensionObject An ExtensionObject is encoded as sequence of bytes prefixed by the NodeId of its DataTypeEncoding , the DataEncoding used and the number of bytes encoded. An ExtensionObject may be serialized ... number of bytes in the object before it encodes the bytes. However, an ExtensionObject knows how to encode/decode itself which means the encoder shall calculate the number of bytes before
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.6 Structures

encoded as 28-byte sequence. If the instance of Type1 was encoded in an ExtensionObject it would have an additional prefix shown in Table 29 which would make the total ... length 101 bytes. The TypeId , Encoding and the Length are fields defined by the ExtensionObject . The encoding of the Type2 instances do not include any type identifier because
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.7 Structures with optional fields

byte sequence. If the instance of TypeA was encoded in an ExtensionObject it would have the encoded form shown in Table 32 and have a total length of 22 bytes ... length of the TypeId , Encoding and the Length are fields defined by the ExtensionObject . Table 32 - Sample OPC UA Binary Encoded Structure with optional fields Field Bytes Value Type
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.8 Unions

byte sequence. If the instance of Type 1 was encoded in an ExtensionObject it would have the encoded form shown in Table 33 and it would have a total length ... bytes. The TypeId , Encoding and the Length are fields defined by the ExtensionObject . Table 33 - Sample OPC UA Binary Encoded Structure Field Bytes Value Type Id 4 The identifier
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.3.1.9 XmlElement (Deprecated)

sequence> </xs:complexType> XmlElements may only be used inside Variant or ExtensionObject values
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.3.1.16 ExtensionObject

ExtensionObject An ExtensionObject value is encoded as an xs:complexType with the following XML schema: <xs:complexType name="ExtensionObject"> <xs:sequence> <xs:element ... element> </xs:sequence> </xs:complexType> The body of the ExtensionObject contains a single element which is either a ByteString or XML encoded Structure . A decoder
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.3.2 Decimal

Decimal DataType . When encoded in a Variant the Decimal is encoded as an ExtensionObject . Arrays of Decimals are Arrays of ExtensionObjects . The Value is a base-10 signed integer with
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.4.1 General

These fields are not omitted when serialization uses abstract DataTypes such as Structure (i.e. ExtensionObject ) or BaseDataType (i.e. Variant ). OPC 10000-14 specifies the behaviour if a Publisher is misconfigured
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.4.2.16 ExtensionObject

ExtensionObject The ExtensionObject is encoded as a 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 ... present if these fields are used. The JSON object fields used for an ExtensionObject are in Table 40 . Table 40 - JSON Object Fields used for an ExtensionObject Name Description UaTypeId
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.4.3 Decimal

fields. When encoding in a Variant , a Decimal value shall be encoded as an ExtensionObject with the JSON object in Table 43 as the Body . The TypeId shall
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

7.4.4 Binary Encoding

Length: nnnn The Message body is the request or response structure encoded as an ExtensionObject in OPC UA Binary. The Authorization header is only used for Session-less Service calls
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

F.13 DataTypeField

subtypes of the DataType . If TRUE, all subtypes of Structure are encoded as an ExtensionObject (see 5.1.6 ) and all DataTypes that are not subtypes of Structure are encoded
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

H.7 ExtensionObject

ExtensionObject For the ReversibleEncoding , ExtensionObject values shall be encoded as a JSON object with the fields shown in Table H.6 . Table H.6 - JSON Object Definition for an ExtensionObject Name Description ... string. This field is omitted if the value is 0. Body Body of the ExtensionObject . The type of this field is specified by the Encoding field. If the Body
OPC-10000-12 – OPC Unified Architecture - Part 12: Discovery and Global Services

7.8.2.1 TrustListType

instance of TrustListDataType (see 7.8.2.8 ). The encoded structure is not wrapped in an ExtensionObject . The Size Property inherited from FileType has no meaning for TrustList and returns the error code
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.3.2.4 FieldMetaData

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 the dataType field. (4) DataTypes ... concrete UInteger DataTypes or as an instance of an OptionSetType in an ExtensionObject . DataType NodeId The NodeId of the DataType of this field. If the DataType is an Enumeration
OPC-10030 – OPC Unified Architecture - Common Object Model: ISA-95

7.5.4 ISA95TestResultType

before it is transmitted on the wire. The generic Structure DataType results in an ExtensionObject being placed on the wire. The default defined sub-type is either ISA95TestResultDataType or ISA95TestResultMeasurementDataType