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

17 result(s) for SerializationValue

OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

3.1.5 SerializationValue

SerializationValue the merged compact aggregation of the Values of all serialized Nodes belonging to the SerializationScope and is the Value of the SerializedData Variable
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

3.1.2 SerializationEntity

ReferenceType. Note 1 to entry: The parent Object of the SerializedData Variable containing the SerializationValue and allows the configuration of the SerializationScope and the Serialization DataTypes
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

3.1.6 SerializationFieldDataType

SerializationFieldDataType the DataType of a field of the SerializationFieldDataType or the SerializationValue DataType to represent a serialized Node inside the SerializationValue . Note 1 to entry: The serialized Node
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

3.1.8 SerializationProcess

SerializationProcess the mapping of the SerializationValue from and to the Values in the SerializationScope . Note 1 to entry: This can imply the creation or re-creation of the SerializationFieldDataType used ... SerializationValue
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

4.1 Object Serialization Basic Concept

different Variables belonging to a subset of the Information Model ( SerializationScope ) into the Value (SerializationValue) of a single Variable ( SerializedData ) . Clients gain access to all Values in the SerializationScope ... once by accessing the SerializationValue
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

4.2 Read Access to the SerializationValue

Read Access to the SerializationValue Figure 1 illustrates the relationship between SerializationScope, SerializationValue, and the SerializationProcess between them. Figure 1 - Relationship of SerializationScope and SerializationValue The SerializationProcess taking place during ... read access creates the SerializationValue . The DataType of the SerializationValue is provided by the DataType Attribute . The Server may create the DataType information at the time when the SerializationValue DataType
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

4.3 Write Access to the SerializationValue

Write Access to the SerializationValue Figure 2 illustrates the SerializationProcess taking place for serving a write access to the SerializationValue . Figure 2 - SerializationProcess for write access The creation ... SerializationValue for write access at the Client site needs the knowledge of the SerializationValue DataType
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

4.4 SerializationScope and SerializationEntity

subset of Nodes in the Information Model which are mapped into the SerializationValue, and which shall take part in a SerializationProcess . A SerializationScope consists of Nodes reachable from a start ... allows settings regarding the content of the DataType representing Variables ( SerializationFieldDataType ) inside the SerializationValue also and is the parent Object of the SerializedData Variable . The SerializationValue is the Value
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

4.5 General Features

preserved. This means that the relationship of the Objects and Variables contributing to the SerializationValue is preserved. Servers can provide different serializations by providing different SerializationEntities , e.g. for process values ... tailored to serve different use cases. SerializationScopes can comprise other SerializationScopes for one SerializationValue as described in chapter 6.3.6 and shown in Figure 9 . Access to the SerializationValue is guaranteed
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

6.2 Limitations

SerializationScope are used as field names for the SerializationFieldDataType fields in the SerializationValue DataType , limitations for BrowseNames arise: The characters used for the BrowseNames must be permissible in field names
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

6.3.2 SerializedData Variable

SerializedData Variable The SerializedData Variable holds the SerializationValue , customized by the SerializationProperties . The DataType of the SerializationValue is the SerializationValue DataType and is a subtype of Structure where the DataTypeDefinition ... must read the DataTypeDefinition Attribute of the DataType to be able to decode the SerializationValue . The Value of the SerializedData Variable is only generated (serialized) when requested by the Read
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

6.3.9 IncludeStatus, IncludeSourceTimestamp, and IncludeDictionaryReference Properties

Boolean indicating whether the HasDictionaryEntry References of the serialized Variables are included into the SerializationValue . If True, the SerializationFieldDataType of the Variable shall be structure DataType which shall contain
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

A.1 Model Instance: Variable with Components

Model Instance: Variable with Components Figure A.1 shows the SerializationValue DataType structure generated by the Server for a SerializationScope with a Variable having other Variables as components ... descend into the depth of the subtree originating from the SerializationStartNode causes the SerializationValue DataType to exhibit nested sub-structures mapping the corresponding part of the subtree. On top level
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

A.2 RIO Channel Group Configuration

Properties belonging to a single Object as SerializationStartNode are serialized into the SerializationValue DataType , and how this DataType is serialized by the JSON encoder. If the SerializationProperties have default values ... Properties of the ChannelGroupConfig Object (see OPC RIO) are mapped into fields of the SerializationValue DataType which have the same DataType as the Property they represent. The JSON encoding
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

A.3 RIO Channel Process Values

Process Values (see OPC RIO) belonging to RioChannelType Objects are mapped into the SerializationValue DataType . The "SerializationEntity" referenced by the SerializationStartNode directs the SerializationProcess to follow only HasRioOutputChannel
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

A.4 Energy Measurement Values

PeMeasurementID , AccuracyDomain , AccuracyClass and EngineeringUnits Properties of the MeasurementValueType Variables (see OPC PE ) The SerializationValue DataType structure contains only fields for the Values of the MeasurementValueType Variables . The JSON snipped
OPC-10000-25 – OPC Unified Architecture - Part 25: Object Serialization

A.7 Combining SerializationScopes

StatusCode of the "MeasurementY1" Variable Value to be part of the SerializationValue DataType . The ExcludeReferenceTypes array containing one element with the value HasProperty ReferenceType excludes all Properties ... MeasurementY1" Variable . The JSON snipped shows how the resulting SerializationValue structure DataType is serialized using VerboseEncoding (see OPC 10000-6 ) and RawData field encoding