OPC UA Connector supports the Update Request functionality. This enables you to receive the complete process image of the configured tags. In case the application fails to receive the initial publish of the complete process image by the OPC UA Connector app, you can initiate request for the same.
You must add a topic in Databus in the following format to receive the configured data: ie/c/j/simatic/v1/updaterequest
where ie: industrial edge, c: control, j: json
The JSON payload structure for Update Request is as follows:
{
"Path" : "<connector-id>/<connection-name>/<collection-name>"
}
connector-id should be opcuac1 and collection-name should be default for OPC UA Connector, since only the default collection is currently supported.
-
For receiving the last Tag data of all deployed tags under all connections
{
"Path" : "opcuac1"}
-
For receiving the last Tag data of the deployed tags under a specific connection
{
`"Path" : "opcuac1/<connection-name>"`}