Instances of WriterGroupType contain settings for a group of DataSetWriters. The WriterGroupType is formally defined in Table 115.

Table 115 – WriterGroupType Definition

Attribute

Value

BrowseName

WriterGroupType

IsAbstract

False

References

Node Class

BrowseName

DataType

TypeDefinition

Modelling Rule

Subtype of PubSubGroupType defined in 9.1.6.2

HasProperty

Variable

WriterGroupId

UInt16

PropertyType

Mandatory

HasProperty

Variable

PublishingInterval

Duration

PropertyType

Mandatory

HasProperty

Variable

KeepAliveTime

Duration

PropertyType

Mandatory

HasProperty

Variable

Priority

Byte

PropertyType

Mandatory

HasProperty

Variable

LocaleIds

LocaleId[]

PropertyType

Mandatory

HasProperty

Variable

HeaderLayoutUri

String

PropertyType

Mandatory

HasComponent

Object

TransportSettings

WriterGroupTransportType

Optional

HasComponent

Object

MessageSettings

WriterGroupMessageType

Optional

HasDataSetWriter

Object

<DataSetWriterName>

DataSetWriterType

OptionalPlaceholder

HasComponent

Object

Diagnostics

PubSubDiagnostics‌WriterGroupType

Optional

HasComponent

Method

AddDataSetWriter

Defined in 9.1.6.4.

Optional

HasComponent

Method

RemoveDataSetWriter

Defined in 9.1.6.5.

Optional

The WriterGroupId is defined in 6.2.5.1.

The PublishingInterval is defined in 6.2.5.2.

The KeepAliveTime is defined in 6.2.5.3.

The Priority is defined in 6.2.5.4.

The LocaleIds parameter is defined in 6.2.5.5.

The transport protocol mapping specific setting settings are provided in the optional Object TransportSettings. The WriterGroupTransportType is defined in 9.1.6.7. The Object shall be present if the transport protocol mapping requires specific settings.

The message mapping specific setting settings are provided in the optional Object MessageSettings. The WriterGroupMessageType is defined in 9.1.6.8. The Object shall be present if the message mapping defines specific parameters.

The configured DataSetWriterType Objects are added as components to the instance of the group. DataSetWriterType Objects may be configured with product specific configuration tools or through OPC UA Methods AddDataSetWriter and RemoveDataSetWriter. The DataSetWriterType is defined in 9.1.7.1. The ReferenceType HasDataSetWriter is defined in 9.1.6.6.

The Diagnostics Object provides the current diagnostic information for a WriterGroupType Object. The PubSubDiagnosticsWriterGroupType is defined in 9.1.11.9.