Connections - MQTT

Under Connections, you can add and manage connections to external interfaces. For example, you can use MQTT to integrate IoT devices, sensors and industrial control systems. A corresponding trigger is available in the flows, which can receive and process data from the MQTT interface.

In addition to MQTT, connections for WDX3 and IMAP can also be set up.

1️⃣ Each connection can be switched on and off in the overview using the toggle. The current status of the connection is displayed on the right-hand side.

2️⃣ The functions at the bottom of a connection provide you with more in-depth monitoring and editing options for that connection.

• LOG shows you the connection log. For example, when a connection was established or terminated.
• Clicking EDIT takes you to the connection’s edit view. This is the same as the view shown during the initial setup of a connection and allows you, for example, to change the password or replace the certificate.
• The LIVE view shows you in real time which data is being exchanged via the interface.
• You can use DELETE to completely remove a connection that is no longer required.

Create a connection

If you wish to create a new connection, the following input form will appear.

1️⃣ Use the Name and Description fields to name the connection you are setting up and add a description. This will help you identify the connection in the overview later on, should you set up multiple connections.

2️⃣ In the Type drop-down menu, you can specify the type of connection. In the example shown, this is MQTT.

3️⃣ Here, you can specify the protocol, the URL of your MQTT broker and the corresponding port.

4️⃣ Username and Password may be required for authentication with the server when setting up an MQTT connection. To view the password, click on the eye icon to the right of the password input field. You can also optionally upload the certificate.

5️⃣ Under Topics, you can define up to 5 topics (such as ‘Temperature’)

Updated on: 16/04/2026