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

10 result(s) for KeyFrameCount

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

5.4.1.2 Message sending

encoded. The DataSetMessageContentMask (see 6.3.1.3.2 ) controls which header fields shall be encoded. The KeyFrameCount (see 6.2.4.3 ) greater than or equal to 1 controls whether a key frame or a delta ... frame DataSetMessage is to be created. A KeyFrameCount of 0 is used for non-cyclic PublishedDataSets, like PublishedEvents . The resulting DataSetMessage is passed on to the next step together with
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.3.9.1 CyclicDataSet

false, event DataSetMessages are sent acyclicly and a related DataSetWriter shall use a KeyFrameCount of 0. If CyclicDataSet is true, key frame or delta frame DataSetMessages are sent ... related DataSetWriter shall use a KeyFrameCount that is greater than or equal
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.4.3 KeyFrameCount

KeyFrameCount The KeyFrameCount with DataType UInt32 is the multiplier of the PublishingInterval that defines the maximum number of times the PublishingInterval expires before a key frame message with values ... changes exist, the delta frame DataSetMessage shall not be sent. If the KeyFrameCount is set to 1, every message contains a key frame. For PublishedDataSets that provide cyclic updates
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.6.2 PublishingInterval

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

6.2.9.6 MessageReceiveTimeout

considered new. The MessageReceiveTimeout is related to the Publisher side parameters PublishingInterval , KeepAliveTime and KeyFrameCount
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.9.7 KeyFrameCount

KeyFrameCount The KeyFrameCount with DataType UInt32 is the multiplier of the PublishingInterval that defines the maximum number of times the PublishingInterval expires before a key frame message, with all field
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.7.2 DataSetWriterType

Variable DataSetWriterId UInt16 PropertyType Mandatory HasProperty Variable DataSetField‌ContentMask DataSetField ContentMask PropertyType Mandatory HasProperty Variable KeyFrameCount UInt32 PropertyType Optional HasProperty Variable DataSetWriterProperties KeyValuePair[] PropertyType Mandatory HasComponent Object TransportSettings DataSetWriterTransportType Optional HasComponent ... Base The DataSetWriterId is defined in 6.2.4.1 . The DataSetFieldContentMask is defined in 6.2.4.2 . The KeyFrameCount is defined in 6.2.4.3 . The Property shall be present for PublishedDataSets that provide cyclic updates
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

9.1.8.2 DataSetReaderType

HasProperty Variable DataSetFieldContentMask DataSetFieldContentMask PropertyType Mandatory HasProperty Variable MessageReceiveTimeout Duration PropertyType Mandatory HasProperty Variable KeyFrameCount UInt32 PropertyType Mandatory HasProperty Variable HeaderLayoutUri String PropertyType Mandatory HasProperty Variable SecurityMode MessageSecurityMode PropertyType Optional ... DataSetMetaData . The DataSetFieldContentMask is defined in 6.2.9.5 . The MessageReceiveTimeout is defined in 6.2.9.6 . The KeyFrameCount is defined in 6.2.9.7 . The HeaderLayoutUri is defined in 6.2.9.8 . The SecurityMode is defined
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

A.2.1.8 Example fixed message layout without security

position of other DataSetMessages in this NetworkMessage . By setting-specific values for KeyFrameCount and DataSetOrdering (see Table A.6 ) it is guaranteed that the number of DataSetMessages and their order inside
OPC-10000-81 – OPC Unified Architecture - Part 81: UAFX Connecting Devices and Information Model

E.6.4 ConnectionConfigurationSet and DataSetWriter

DataSetMessage are determined by the generator of the PubSubConfiguration . For UADP-Periodic-Fixed, the KeyFrameCount is set to 1. For UDP_UADP, no DataSetWriterProperties or TransportSettings are defined