Use the API Tester for a functional test.

• An MQTT broker must be running on the network. One open source (EPL/EDL licensed) MQTT broker is Eclipse Mosquitto.
• After the module has been started, call the Set Client Parameters and Set Connection Parameters request to hand over Server Address, Username and Password
• Now call the Start Client and the Connect requests to establish the connection to the boker
• Finally, you are ready to use the Publish and Subscribe requests to send and receive data.

Subscribe to all topics with a different tool to see the published data.

You can also start multiple clones, one subscribing the topic of the other, and see the data from the publisher arriving at the subscriber.

1. Start, configure and connect the publisher as mentioned above
2. Start, configure and connect the subscriber as mentioned above
3. write the same topic to Topic and Subscribe Topic and add some string in the Data control
4. Select module ID of the subscriber and click on Subscribe
5. Select module ID of the publisher and click on Publish