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

93 result(s) for WriterGroup

OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

5.4.1.2 Message sending

DataSetWriter takes the DataSet and creates a DataSetMessage . DataSetMessages from DataSetWriters in one WriterGroup can be inserted into a single NetworkMessage . The creation of a DataSetMessage is guided
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

5.4.5.3 Key acquisition handshakes

initial pull or push fails, the affected PubSub components like WriterGroup or DataSetReader stay in the PreOperational state. If the updates fail and the PubSub components do not have
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

5.4.6.4 QoS configuration

based QoS As shown in Figure 18 and Figure 19 the PriorityLabel from a WriterGroup , DataSetReader or PubSubConnection TransportSettings will be translated into actual values to be used
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.1 Overview

mechanisms. Figure 20 depicts the different components and their relation to each other. The WriterGroup , DataSetWriter and PublishedDataSet components define the data acquisition for the DataSets , the message generation ... Each DataSetWriter is bound to a single PublishedDataSet . A PublishedDataSet can have multiple DataSetWriters . WriterGroup parameters are necessary for creating a NetworkMessage . Each writer group can have one or more
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.3.7.1 PublishedData

value -1 indicates that the default sampling interval defined by the PublishingInterval of the WriterGroup is requested. Any negative number is interpreted as -1. DeadbandType UInt32 A value that defines
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.4.5.1 DataSetWriterDataType

Name String The name of the DataSetWriter . The name shall be unique across the WriterGroup . It is recommended to use a human readable name. Enabled Boolean The enabled state
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.5.1 General

General The parameters are shared between WriterGroup and ReaderGroup . The parameters are related to PubSub NetworkMessage security. See 5.4.5 for an introduction of PubSub security and Clause
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.5.2 SecurityMode

SecurityMode indicates the level of security applied to the NetworkMessages published by a WriterGroup or received by a ReaderGroup . The MessageSecurityMode DataType is defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.5.4 SecurityKeyServices

information is sent as part of a discovery announcement message for a WriterGroup , the ApplicationType shall be set to SERVER even if the Publisher is configured for push. GatewayServerUri String
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.5.5 MaxNetworkMessageSize

with DataType UInt32 indicates the maximum size in bytes for NetworkMessages created by the WriterGroup . It refers to the size of the complete NetworkMessage including padding and signature without
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.1 WriterGroupId

WriterGroupId The WriterGroupId with DataType UInt16 is an identifier for the WriterGroup and shall be unique across all WriterGroups for a PublisherId. All values, except for 0, are valid
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.2 PublishingInterval

invalid. If the PublishingInterval is 0, the KeyFrameCount of all DataSetWriters in the WriterGroup shall be 0. For cyclic PublishedDataSets one DataSet is produced for one PublishedDataSet in a PublishingInterval
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.4 Priority

Priority The Priority with DataType Byte defines the relative priority of the WriterGroup to all other WriterGroups across all PubSubConnections of the Publisher . If more than one WriterGroup needs
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.5 LocaleIds

locale ids in priority order for localized strings for all DataSetWriters in the WriterGroup . The first LocaleId in the list has the highest priority. If the Publisher sends a localized
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.7.1 WriterGroupDataType

LocaleId[] Defined in 6.2.6.5 . HeaderLayoutUri String Defined in 6.2.6.6 . TransportSettings WriterGroupTransportDataType Transport mapping specific WriterGroup parameters. The abstract base type is defined in 6.2.6.7.2 . The concrete subtypes are defined ... transport mapping, the field shall be null. True MessageSettings WriterGroupMessageDataType NetworkMessage mapping specific WriterGroup parameters. The abstract base type is defined in 6.2.6.7.3 . The concrete subtypes are defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.7.2 WriterGroupTransportDataType

WriterGroupTransportDataType This Structure DataType is an abstract base type for transport mapping specific WriterGroup parameters. The abstract DataType does not define fields. The WriterGroupTransportDataType Structure representation in the AddressSpace
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.7.3 WriterGroupMessageDataType

WriterGroupMessageDataType This Structure DataType is an abstract base type for message mapping specific WriterGroup parameters. The abstract DataType does not define fields. The WriterGroupMessageDataType Structure representation in the AddressSpace
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.7.5.1 PubSubConnectionDataType

field shall be null. True WriterGroups WriterGroupDataType[] The WriterGroups contained in the PubSubConnection . The WriterGroup is defined in 6.2.6 . ReaderGroups ReaderGroupDataType[] The ReaderGroups contained in the PubSubConnection . The ReaderGroup
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.8.1 General

used to group a list of DataSetReaders . It is not symmetric to a WriterGroup and it is not related to a particular NetworkMessage . The NetworkMessage related filter settings
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.9.2 WriterGroupId

WriterGroupId The parameter WriterGroupId with DataType UInt16 defines the identifier of the corresponding WriterGroup . The default value 0 is defined as null value, and means this parameter shall be ignored
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.1.1 Relationship of Timing parameters

Figure 29 . The SamplingOffset and PublishingOffset are defined as parameters of the UADP WriterGroup . The ReceiveOffset and the ProcessingOffset are defined as parameters of the UADP DataSetReader in 6.3.1.4 . Figure
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.1.2 GroupVersion

last layout change of the content of the NetworkMessages published by the WriterGroup . The VersionTime DataType is defined in OPC 10000-4 . The GroupVersion changes when one of the following ... parameters is modified: NetworkMessageContentMask of this WriterGroup ; Offset of any DataSetWriter in this WriterGroup ; MinorVersion of the DataSet of any DataSetWriter in this WriterGroup ; DataSetFieldContentMask of any DataSetWriter in this
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.1.4 NetworkMessageContentMask

defines the optional header fields to be included in the NetworkMessages produced by the WriterGroup . The DataType for the UADP NetworkMessage mapping is UadpNetworkMessageContentMask . The DataType UadpNetworkMessageContentMask is formally defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.3.1 General

General The configuration of the DataSetWriters in a WriterGroup can result in a fixed NetworkMessage layout where all DataSets have a static position between NetworkMessages . In this case the parameters ... mapping allows keeping the value for these Properties constant unless the configuration of the WriterGroup is changed
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.1.3.4 NetworkMessageNumber

NetworkMessageContentMask is false. If the NetworkMessage layout is fixed and all DataSetMessages of a WriterGroup fit into one single NetworkMessage , the value of NetworkMessageNumber shall be 1. If the DataSetMessages ... WriterGroup are distributed or chunked over more than one NetworkMessage , the first NetworkMessage in a PublishingInterval shall be generated with the value 1, the following NetworkMessages shall be generated with
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.2.1.1 NetworkMessageContentMask

defines the optional header fields to be included in the NetworkMessages produced by the WriterGroup . The DataType for the JSON NetworkMessage mapping is JsonNetworkMessageContentMask . The DataType JsonNetworkMessageContentMask is formally defined ... they must be sent in individual NetworkMessages . ReplyTo 5 Not used. WriterGroupName 6 The WriterGroup name is included in the NetworkMessage s. The JsonNetworkMessageContentMask representation in the AddressSpace is defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.2.1.2 JsonWriterGroupMessageDataType structure

JsonWriterGroupMessageDataType structure This Structure DataType is used to represent the JSON NetworkMessage mapping specific WriterGroup parameters. It is a subtype of WriterGroupMessageDataType defined in 6.2.6.7.3 . The JsonWriterGroupMessageDataType is formally defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.3.2.3.1 DataSetMessageContentMask

This bit shall be false if the NetworkMessageHeader is active. WriterGroupName 9 The WriterGroup name is included in the DataSetMessage s. If the WriterGroup name is included in the NetworkMessage
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.1.3.4 Address

Address parameter contains the network address information for the communication middleware related to the WriterGroup . The different Structure DataTypes used to represent the Address are defined in 6.2.7.5.3 . The parameter
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.1.3.5 QosCategory

QosCategory Selects the general category of QoS the WriterGroup requires. Further details are defined in 6.4.1.1.1 . The parameter shall be null or empty if no QoS related parameters
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.1.3.6 DatagramQos

DatagramQos The DatagramQos parameter contains QoS related parameters for the WriterGroup as array of TransmitQosDataType Structures . The abstract TransmitQosDataType is defined in 6.4.1.1.3 . The concrete subtypes are used to represent
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.1.3.8 Topic

with DataType String contains the unique name of the data stream produced by the WriterGroup within a Message Oriented Middleware . A unique default name can be created by combining
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.2.1 ResourceUri

authentication shall be assumed as default unless authentication settings are provided on a subordinated WriterGroup or a DataSetWriter to authenticate access to individual queues
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.3.4 RequestedDeliveryGuarantee

BrokerTransportQualityOfService specifies the delivery guarantees that shall apply to all NetworkMessages published by the WriterGroup unless otherwise specified on the DataSetWriter transport settings. The DataType BrokerTransportQualityOfService is defined ... value NotSpecified is not allowed on the WriterGroup . If the selected delivery guarantee cannot be applied, the WriterGroup shall set the state to Error
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.5.1 QueueName

defined in the Broker . This parameter is only valid if the NetworkMessages from the WriterGroup for this DataSetWriter contain only DataSetMessages from this DataSetWriter . If this String is not null ... empty, it overrides the QueueName of the WriterGroup transport settings
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.5.2 ResourceUri

this String is not null or empty, it overrides the ResourceUri of the WriterGroup authentication settings
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.5.3 AuthenticationProfileUri

this String is not null or empty, it overrides the AuthenticationProfileUri of the WriterGroup transport settings
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.4.2.5.4 RequestedDeliveryGuarantee

value is not NotSpecified , it overrides the RequestedDeliveryGuarantee of the WriterGroup transport settings. Overriding the WriterGroup setting is only valid if the DataSetWriter also overrides the QueueName . If the selected
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.4.2 NetworkMessage layout

messages where the reserved bits are not false. WriterGroupId UInt16 Unique id for the WriterGroup in the Publisher. A Subscriber can skip NetworkMessages from WriterGroups it does not expect NetworkMessages
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.6.8 PubSubConnection

PubSubConnectionDataType is defined in 6.2.7.5.1 . The ReaderGroup lists in PubSubConnectionDataType shall be empty. The WriterGroup list shall be contained, if the IncludeWriterGroups is true in the PubSubConnection information probe message
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.6.9 DataSetWriter configuration announcement message

message structure is specified in Table 175 . It contains the current configuration of the WriterGroup and the DataSetWriter for the DataSet . The Publisher shall send this message without a corresponding ... discovery probe if the configuration of the WriterGroup changed. Table 175 - DataSetWriter configuration announcement message structure Name Type Description DataSetWriterIds UInt16[] DataSetWriterIds contained in the configuration information. The field
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.6.10 ActionResponder configuration announcement message

Actions shall be excluded. The ReaderGroup lists in PubSubConnectionDataType shall be empty. The WriterGroup list shall be contained, if the IncludeWriterGroups is true in the PubSubConnection information probe message
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.6.12.2 Traffic reduction

Publisher specific. If the Publisher receives discovery probes for different DataSetWriters in one WriterGroup , the Publisher shall send one aggregated discovery announcement
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.6.12.4 Publisher information probe message

information is provided with the DataSetWriter configuration announcement message defined in 7.2.4.6.9 . 4 WriterGroup configuration The settings for this InformationType are defined in Table 181 The information is provided with ... each requested DataSetWriterId . For DataSetWriter configuration probes, the DataSetWriters that belong to one WriterGroup are sent together in one DataSetWriter configuration message. If more than one WriterGroup is affected, this
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.3 NetworkMessage containing DataSetMessages

converted to a String without leading zeros. WriterGroupName String The name of the WriterGroup which created the NetworkMessage . The presence of the value depends on the setting in the JsonNetworkMessageContentMask
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.4.1 Message content

omitted if the NetworkMessage header is present. WriterGroupName String The name of the WriterGroup which created the DataSetMessage . The presence of the value depends on the setting in the JsonDataSetMessageContentMask
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.5.2 DataSetMetaData

unique within the scope of a Publisher . WriterGroupName String The name of the WriterGroup which created the NetworkMessage . This value is mandatory. DataSetWriterName String The name of the DataSetWriter. This
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.6.2 ActionRequest

value depends on the setting in the JsonDataSetMessageContentMask . WriterGroupName String The name of the WriterGroup which created the DataSetMessage . The presence of the value depends on the setting
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.6.3 ActionResponse

value depends on the setting in the JsonDataSetMessageContentMask . WriterGroupName String The name of the WriterGroup which created the DataSetMessage . The presence of the value depends on the setting
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.2.2 UDP multicast and broadcast

multicast IP address shall be configured on one PubSubConnection . The Address parameter for WriterGroup datagram TransportSettings shall be null. If an Address is configured on a WriterGroup , the WriterGroup PubSubState
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.2.3 UDP unicast

PubSubConnection and the address information for the Publisher is configured on the WriterGroup . The receive port for UDP unicast communication is configured on a PubSubConnection . The Address parameter ... port>] The destination address is configured on the datagram TransportSettings of a WriterGroup . The Address parameter for a WriterGroup datagram TransportSetting is defined in 6.4.1.3.4 . The Address parameter
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.2.4.1 General

port> The send address is configured on the datagram TransportSettings of a WriterGroup . The Address parameter for a datagram TransportSetting is defined in 6.4.1.3.4 . The syntax
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.2.4.3 Connection Properties

properties Key DataTypes Description 0:DtlsConnectionSettings DtlsPubSubConnectionDataType The DTLS configuration for the PubSubConnection or WriterGroup . The DtlsPubSubConnectionDataType is defined in 6.4.1.7.6 . 0:DtlsClientCipherSuite String Cipher suite for the PubSubConnection ... WriterGroup . The ClientCipherSuite is defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.4 Connection properties

connection created as part of the PubSubConnection , or subordinate configuration entities, such as the WriterGroup and the DataSetWriter . The properties are defined through the KeyValuePair array in the ConnectionProperties
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.6 Transport Limits and Keep Alive

Transport Limits and Keep Alive If the KeepAliveTime is set on a WriterGroup , a value slightly higher than the configured value of the group in seconds should
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.1 General

pattern: <Prefix>/<Encoding>/<MqttMessageType>/<PublisherId>/[<WriterGroup>[/<DataSetWriter>]] Where Topic levels are: <Prefix> is a system defined ... PublisherId> uniquely identifies a Publisher within the scope of the prefix; <WriterGroup> is the name of a WriterGroup within the Publisher ; <DataSetWriter> is the name
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.3 data Topic level

form: <Prefix>/<Encoding>/data/<PublisherId>/<WriterGroup>[/<DataSetWriter>] The <PublisherId> Topic level is the PublisherId for the application sending ... messages. The <WriterGroup> Topic level is the name of a WriterGroup within the Publisher . The <DataSetWriter> Topic level is the name of a DataSetWriter within
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.4 metadata Topic level

form: <Prefix>/<Encoding>/metadata/<PublisherId>/<WriterGroup>/<DataSetWriter> The <PublisherId> Topic level is the PublisherId for the application sending ... messages. The <WriterGroup> Topic level is the name of a WriterGroup within the Publisher. The <DataSetWriter> Topic level the name of a DataSetWriter within the WriterGroup
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.9 action-request Topic level

form: <Prefix>/<Encoding>/action-request/<Responder>/<WriterGroup> The <Responder> Topic level is the PublisherId for the Responder of the Actions ... WriterGroup> Topic level is the name of a WriterGroup . The action-request Topic level is the default if the system owner does not have their own Topic tree
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.10 action-response Topic level

form: <Prefix>/<Encoding>/action-response/<Responder>/<WriterGroup> The <Responder> Topic level is the PublisherId for the Responder of the Actions ... WriterGroup> Topic level is the name of a WriterGroup . The action-response Topic level is the default if the ResponseAddress is not provided in the ActionRequest . The messages
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.8 Message header

does not support message headers. Any promoted field or additional fields defined on the WriterGroup or DataSetWriter other than RETAIN are not sent as MQTT message properties. MQTT version ... MQTT message header shall include additional fields defined on the PubSubConnection , WriterGroup or DataSetWriter through the KeyValuePair array in the WriterGroupProperties and DataSetWriterProperties . The NamespaceIndex of the QualifiedName
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.3.3 SetSecurityKeys

application with the ApplicationUri that matches the ApplicationUri in the SecurityKeyServices parameter of the WriterGroup , ReaderGroup or DataSetReader objects using the SecurityGroupId . Signature SetSecurityKeys ( [in] String SecurityGroupId, [in] String SecurityPolicyUri
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.3.7.2 PubSubConfigurationRefMask

applied to ReferenceWriterGroup shall return Bad_InvalidState if the GroupHeader is active for the WriterGroup . For the PubSubConnectionDataType , the following structure fields are used for the match, the others ... referenced DataSetReader . ReferenceWriterGroup 6 The element operation is applied to the referenced WriterGroup . ReferenceReaderGroup 7 The element operation is applied to the referenced ReaderGroup . ReferenceConnection 8 The element operation
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.3.7.4 PubSubConfigurationValueDataType

PubSub NetworkMessages . The value is only provided if the element is a PubSubConneciton , WriterGroup or DataSetWriter . The value is null otherwise. If ConfigurationElement references a PubSubConnection , Identifier will contain ... value of the PublisherId . If ConfigurationElement references a WriterGroup , Identifier will contain the value of the WriterGroupId . If ConfigurationElement references a DataSetWriter , Identifier will contain the value of the DataSetWriterId
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.3.7.6 CloseAndUpdate Method

entries. Bad_ResourceUnavailable The maximum number of supported elements is reached. Bad_InvalidState A WriterGroup with active GroupHeader was references with ElementMatch. Bad_UserAccessDenied The user has not the rights
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.5.2 PubSubConnectionType

Object shall be present if the transport protocol mapping defines specific parameters. The configured WriterGroup and ReaderGroup Objects are added as components to the instance of the PubSubConnectionType . PubSubGroup Objects
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.5.3 AddWriterGroup Method (Deprecated)

AddWriterGroup Method (Deprecated) This deprecated Method is used to add a new WriterGroup Object to an instance of the PubSubConnection . The Client should be authorized to modify the configuration ... AddWriterGroup ( [in] WriterGroupDataType Configuration, [out] NodeId GroupId ); Argument Description Configuration Configuration parameters for the WriterGroup . The parameters and the WriterGroupDataType are defined in 6.2.6 . GroupId The NodeId
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.6.4 AddDataSetWriter Method (Deprecated)

Method is used to add a new DataSetWriterType Object to an instance of the WriterGroup . A successful creation of the DataSetWriter shall also create a Reference from the related PublishedDataSet
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.12.1 PubSubCapabilitiesType

MaxDataSetWritersPerGroup Variable defines the maximum number of DataSetWriters that can be configured in one WriterGroup . A value of 0 indicates that the OPC UA Application forces no limit ... number of DataSetWriters in one WriterGroup . The MaxSecurityGroups Variable defines the maximum number of SecurityGroups that can be configured. A value of 0 indicates that the OPC UA Application forces
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.2.1.1 UadpWriterGroupMessageType

UadpWriterGroupMessageType This ObjectType represents UADP message mapping specific parameters for a WriterGroup . The UadpWriterGroupMessageType is formally defined in Table 336 . Table 336 - UadpWriterGroupMessageType definition Attribute Value BrowseName UadpWriterGroupMessageType IsAbstract False
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.2.2.1 JsonWriterGroupMessageType

JsonWriterGroupMessageType This ObjectType represents JSON message mapping specific parameters for a WriterGroup . The JsonWriterGroupMessageType is formally defined in Table 339 . Table 339 - JsonWriterGroupMessageType definition Attribute Value BrowseName JsonWriterGroupMessageType IsAbstract False
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.3.1.2 DatagramWriterGroupTransportType

DatagramWriterGroupTransportType This ObjectType represents datagram transport protocol mapping specific parameters for a WriterGroup . The DatagramWriterGroupTransportType is formally defined in Table 346 . Table 343 - DatagramWriterGroupTransportType definition Attribute Value BrowseName DatagramWriterGroupTransportType IsAbstract
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.3.2.2 BrokerWriterGroupTransportType

BrokerWriterGroupTransportType This ObjectType represents broker transport protocol mapping specific parameters for a WriterGroup . The BrokerWriterGroupTransportType is formally defined in Table 346 . Table 346 - BrokerWriterGroupTransportType definition Attribute Value BrowseName BrokerWriterGroupTransportType IsAbstract
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.1.2 Overview

GroupHeader will be used for this purpose. PublisherId and WriterGroupId identify the WriterGroup . The NetworkMessageNumber is important for WriterGroups which distribute their DataSet s over more than one NetworkMessage
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.1.8 Example fixed message layout without security

deactivated and the Subscriber has to retrieve this information through the DataSetMetaData , DataSetWriter and WriterGroup settings. The configuration has to ensure that the size of each DataSetMessage is constant. This
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.3.2.4 Configuration parameters

A.3.2.4 Configuration parameters Table A.16 defines the values for the WriterGroup configuration parameters representing this layout. Table A.16 - Values for WriterGroup configuration parameters Parameter Value JsonNetworkMessageContentMask 0x4 This value results
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

B.3.4 Connection properties

link created as part of the PubSubConnection , or subordinate configuration entities, such as WriterGroup and DataSetWriter . The properties are defined through the KeyValuePair array in the ConnectionProperties WriterGroupProperties and DataSetWriterProperties
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

B.3.6 Transport Limits and Keep Alive

B.3.6 Transport Limits and Keep Alive If the KeepAliveTime is set on a WriterGroup , a value slightly higher than the configured value of the group should be used as AMQP
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

B.3.7 Message header

binary or JSON data. The AMQP message header includes additional fields defined on the WriterGroup or DataSetWriter through the KeyValuePair array in the WriterGroupProperties and DataSetWriterProperties . The NamespaceIndex
OPC-10000-22 – OPC Unified Architecture - Part 22: Base Network Model

5.5.2.2 PriorityMappingTableType definition

simplified PubSub connection is shown in Annex A.2 . Within the PubSubConnection , each WriterGroup can contain a QosCategory and DatagramQos structure with a PriorityLabel . For the subscriber side these values
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

5.5.5 Persistent and preconfigured objects

part of a logical connection. The other parts of the logical connection (e.g., ConnectionEndpoint , WriterGroup , DataSetWriter) are all created during connection establishment. If the Connection is not marked for persistence
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

5.5.6.2.3 Multiple Connections using unicast network messages

references a DataSetWriter (and DataSetReader) that is located under the same WriterGroup (and ReaderGroup) . The PubSub instances are configured to exchange data between AC_A and AC_B using unicast
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

5.5.6.2.5 DataSetMetaData

individual Publisher or a GroupVersion combining the ConfigurationVersions of all Publishers belonging to a WriterGroup is transmitted with the NetworkMessage . Any mismatch between the transmitted version and the one configured
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.2.4.3.9.2 PubSub

TRUE reference a DataSetReader and/or DataSetWriter which are persisted, including all parent Objects , i.e., WriterGroup , ReaderGroup , PubSubConnection and PublishSubscribe (see NotPersisted in OPC 10000-14 ). If the IsPersistent Property
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.2.4.3.10.2 PubSub

exposed) for each element in ConnectionEndpointConfigurations . It shall also ensure that the parent Objects ( WriterGroup , ReaderGroup , PubSubConnection , and PublishSubscribe ) are enabled. If enabling any communication model-specific Objects fails
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.2.5.2 CloseConnections behaviour

exposed) if no further References from other ConnectionEndpoints exist. Their parent Objects ( WriterGroup , ReaderGroup , PubSubConnection , and PublishSubscribe ) shall be left in their current state. The behaviour of the Client Server
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.6.3 PubSubConnectionEndpointType definition

array of strings, starting with the < PubSubConnection >, then the < WriterGroup > and finally the < DataSetWriter >. This path reflects the hierarchy of elements inside the PubSubConfiguration2DataType ... structure (i.e. the Name field for PubSubConnection , WriterGroup and DataSetWriter elements). Depending on Mode , the following references shall be created: If Mode is Publisher , only a DataSetWriter shall be referenced
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.7.5.3.1 ActionEstablishConnectionsEnabled / ActionEstablishConnectionsDisabled / ActionEstablishConnections

DataSetReader and DataSetWriter configuration elements and to TRUE for all other elements ( WriterGroup , ReaderGroup , PubSubConnection , and PublishSubscribe) . A disabled ClientServer communication model may be defined in a future version ... DataSetReader and DataSetWriter configuration elements and to TRUE for all other elements ( WriterGroup , ReaderGroup , PubSubConnection , and PublishSubscribe) . Calling ProcessConnectionConfigurationSets with Action set to ActionEstablishConnections shall establish all Connections contained
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

6.16.3.2 PubSubCommunicationModelConfigurationType definition

PubSubConfiguration , the entity generating the ConnectionConfigurationSet may set their names (i.e., PubSubConnection , ReaderGroup , WriterGroup , DataSetReader , DataSetWriter ) to a specific value or to null. If set to null, a unique name
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

D.3.6.2 Using preconfigured DataSets

preconfigured PDS_AI4) are in this example created during EstablishConnections . For simplicity, PubSubConnection and WriterGroup are not shown. Figure D.22 - Fixed layout used by ConnectionEndpoint
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

E.4.1 Overview

would contain the names illustrated in boxes ( PubSubConnection , ReaderGroup , DataSetReader and PubSubConnection , WriterGroup , DataSetWriter ) i.e. TempConnection, TempReaderGroup, TempReader for the DataSetReaderPath and TempConnection, TempWritergroup, TempWriter for the DataSetWriterPath
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

E.6.2 ConnectionConfigurationSet and WriterGroup

E.6.2 ConnectionConfigurationSet and WriterGroup As defined in OPC 10000-14 , a WriterGroup defines the Publisher of a NetworkMessage . It is recommended that the PubSubConfiguration contains a WriterGroup for each instance ... PubSubCommunicationFlowConfigurationType. For the example illustrated in Figure E.5 , a WriterGroup in AC_A is generated based on the parameters in Flow1, and a WriterGroup is generated for each
OPC-10000-82 – OPC Unified Architecture - Part 82: UAFX Networking

5.6.4.5 Connection establishment and operation

Communication Layer (see Figure 1 ) uses the QosCategory and PriorityLabel values in the WriterGroup with the PriorityMappingTable to derive the actual PCP and DSCP priority values ... PubSub messages on the wire. Similarly, it uses the Address Variable in the WriterGroup to derive the VLAN ID value to be used in the VLAN tag, as illustrated