OPCUA.RESPOND
This is a Streamsheets
Premium feature.
Sends a response directly, i.e. without any Consumer, to an OPC UA service. The data to be send can be either arbitrary JSON data or a message from the outbox or inbox. Usually this function is used to respond to a previously received request-message.
info
A request-message must provide a requestId property within its Metadata object.
Syntax
=OPCUA.RESPOND(requestId, MessageOrJSON)
Arguments
| Name | Description |
|---|---|
| requestId | The requestId as provided by a previously received request-message |
| MessageOrJSON | Data to send as response. |
Return Value
Color switch to blue on success. Otherwise to red with an error code.
Example
We assume that a request-message was received and that it provides a
requestId which we store to cell B1 by using the read function as
follows: READ(INBOXMETADATA(,,"requestId"), B1, "String")
| Function | Result | Comment |
|---|---|---|
| =OPCUA.RESPOND(B1, OUTBOX("Message")) | TRUE | Sends the message with id Message from the outbox to an OPCUA Service using the requestId in B1 |
| =OPCUA.RESPOND(B1, DICTIONARY(A3:C5)) | TRUE | Sends the JSON data provided by the Dictionary function to an OPCUA Service using the requestId in B1 |