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

14 result(s) for Requestor

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

3.1.6 Requestor

Requestor an entity that initiates an Action by sending a request to a Responder Note 1 to entry: The Requestor uses metadata provided by the Responder to build request messages
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

3.1.1 Action

executed by a Responder when it receives a request message sent by a Requestor Note 1 to entry: An Action is similar to a Method that can be invoked
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

3.1.7 Responder

Responder an entity that executes an Action when a request is received from a Requestor Note 1 to entry: The Responder publishes metadata describing the Actions that it supports
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

3.1.8 PublishedDataSet

published as DataSet Note 2 to entry: The Responder sends a response to Requestor when the Action completes. Note 1 to entry: A PublishedDataSet can be a list of monitored
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

5.4.3 Actions

operations executed by a Responder when it receives a request message sent by a Requestor . An Action could be a Method in an OPC UA Address Space or business logic ... ActionMetaData as a contract is provided by the Responder and used by the Requestor to execute Actions on the Responder . Figure 9 - Action execution sequence The content of the ActionMetaData
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.11.2.2 Action execution sequence

execution. The state changes for Action execution are defined in Table 83 for the Requestor and in Table 84 for the Responder . Table 83 - Action execution state changes Requestor Current ... State Condition Event State for next message Idle Start Action execution Requestor sends Request Message with ActionState = Executing. Executing Executing PublishingInterval expired and no Done or Executing received from Responder
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

6.2.11.2.3 Action specific use of parameters

protocols. The value shall be larger than 0 for non-reliable transport protocols. The Requestor and Responder resends Action messages that have not been acknowledged by the receiver with this ... Dynamic header layout URI is used (see A.2.2 ). BrokerWriterGroupTransportDataType QueueName The address that the Requestor uses to send requests to the Responder . RequestedDelivery‌Guarantee Shall be AtLeastOnce or better UadpWriterGroupMessageDataType SamplingOffset
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.4.2 NetworkMessage layout

defined for the different transport protocol mappings. CorrelationData ByteString Data provided by the Requestor in the Request message that is returned to the Requestor in the Response message. RequestorId BaseDataType ... PublisherId of the Requestor. TimeoutHint Duration The timeout used by the Requestor to wait for a Response messages and by the Responder to stop processing the request. This value
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.5.9 Action request message

DataSetWriterId defined by the Responder. RequestId UInt16 Request identifier provided by the Requestor in the Request message that is returned to the Requestor in the Response message. ActionState Byte Specifies
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.4.5.10 Action response message

DataSetWriterId defined by the Responder. RequestId UInt16 Request identifier provided by the Requestor in the Request message that is returned to the Requestor in the Response message. ActionState Byte
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.6.1 Action NetworkMessage

This value shall be omitted for Response message. CorrelationData ByteString Data provided by the Requestor in the Request message that is returned to the Requestor in the Response message ... included in the Request message. RequestorId String The PublisherId of the Requestor for the "ua-action-request" and "ua-action-response" message. This value is mandatory
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.6.2 ActionRequest

value depends on the setting in the JsonDataSetMessageContentMask . RequestId UInt16 Data provided by the Requestor in the Request message that is returned to the Requestor in the Response message. ActionState
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.2.5.6.3 ActionResponse

value depends on the setting in the JsonDataSetMessageContentMask . RequestId UInt16 Data provided by the Requestor in the Request message that is returned to the Requestor in the Response message. ActionState
OPC-10000-14 – OPC Unified Architecture - Part 14: PubSub

7.3.4.7.2 MessageType mapping

response False No Defined in 7.3.4.7.10 . The ActionResponse topic can be specified by the Requestor. ActionMetaData action-metadata True Yes Defined in 7.3.4.7.12 . A system specific Topic may be used ... Write Read action-request Read Write Publisher is the Responder and Subscriber is the Requestor . The topic with message type action-request is defined by the Responder with its PublisherId