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

5 result(s) for Encoding

OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.2.15 ExtensionObject

shall be able to seek backwards in the stream and update the length after encoding the body. When a decoder encounters an ExtensionObject it shall check if it recognizes ... object body. If the decoder does not recognize the type, it shall use the Encoding to determine if the body is a ByteString or an XmlElement and then decode
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.7 Structures with optional fields

Structures with optional fields Structures with optional fields are encoded with an encoding mask preceding a sequence of fields in the order that they appear in the definition. The encoding ... sequence. The length of the byte sequence depends on the available optional fields. An encoding mask field determines the available optional fields. An instance of TypeA where field
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.2.8 Unions

Unions are encoded as a switch field preceding one of the possible fields. The encoding for the selected field is determined by the data type for the field. The switch ... Table 33 and it would have a total length of 17 bytes. The TypeId , Encoding and the Length are fields defined by the ExtensionObject . Table 33 - Sample OPC UA Binary
OPC-10000-6 – OPC Unified Architecture - Part 6: Mappings

5.4.3 Decimal

string with the Value encoded as a base-10 signed integer. See the XML encoding of Integer values described in 5.3.1.3 . See 5.1.10 for a description of the Scale ... Value 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

H.7 ExtensionObject

DataTypeEncoding Node or a DataType Node formatted using the rules in H.2 . Encoding The format of the Body field encoded as a JSON number. This value ... Body Body of the ExtensionObject . The type of this field is specified by the Encoding field. If the Body is empty, the ExtensionObject is NULL and is omitted or encoded