Rapid scada data streaming API

[rajatdas2005]

Hi,
I have created a scada project with opcua client as a communication line with associated opcua nodes. It gets data from a standalone OPCUA server. Also through rest api GET (http://192.168.1.2:10008/Api/Main/GetCurData?cnlNums=101) and POST (http://192.168.1.2:10008/Api/Main/SendCommand) call I am able to read/write data both in rapid scada and opcua server.
Now as my data is changing frequently instead of using GET call, is there data streaming API call available by which my application will read the data as soon as it change ?

[Mikhail]

Hi,

Now as my data is changing frequently instead of using GET call, is there data streaming API call available by which my application will read the data as soon as it change ?

Try using DrvMqttPublisher driver which publish data on change by MQTT.

[rajatdas2005]

Thank you…So by using DrvMqttPublisher, will I be able to publish scada data to a standalone mqtt broker, so that other application can subscribe it to get the data ?
can you mention the steps to enable and communicate Mqtt Publisher in rapid scada.

• This reply was modified 1 year, 2 months ago by rajatdas2005.

[rajatdas2005]

please provide the steps so that I can expose the rapid-scada opcua client data via MQTT to the external world.

[Mikhail]

will I be able to publish scada data to a standalone mqtt broker, so that other application can subscribe it to get the data ?
can you mention the steps to enable and communicate Mqtt Publisher

Yes, you can. To get more info about configuring that driver, please create a new topic related to MQTT Publisher.

[rajatdas2005]

For both publish and subscribe different topics over MQTT do I need to use both MqttClient and MqttPublisher driver/device ? or only using MqttClient I can do both publish and subscribe ?

[Mikhail]

Probably, you need both.

[rajatdas2005]

And just for publishing data DrvMqttPublisher only will be sufficient ?

[Mikhail]

Yes.

[rajatdas2005]

Using DrvMqttPublisher, not able to create any channels.

[Mikhail]

Please create a corresponding topic to discuss DrvMqttPublisher.

[Author]

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