1.

Start MADRIX, go to Preferences > Device Manager (or press F4), and select the tab Art-Net

2.

Enable the Art-Net checkbox.

After a few seconds, you can see the Art-Net Remote device in the list. That is your own PC.

3.

Now, click Search button on the bottom of the Device Manager.

After a few seconds, you can see the all Art-Net nodes that were found in the network. In this example, it is a MADRIX PLEXUS with 2 universes. The device is displayed with its Art-Net IP address.
If your PC, cannot find the connected Art-Net nodes, please make sure that the nodes and your PC are in the same network. Another reason could be that your Art-Net node does not support the ArtPoll/ArtPollReply feature for automatic finding. You have to add the node manually »Manually Connecting An Art-Net Node In MADRIX

4.

Change the Device Manager tab to DMX Devices. Now, you can see the connected Art-Net nodes as DMX Devices. But DMX output is currently disabled (State is Off).

5.

We will have to enable all Art-Net nodes for DMX output. Please select a DMX device, click Enable in the Settings section and then Apply.
Repeat this step for all your DMX devices that are connected via Art-Net. ArtNet Remote should be Off.

Now you can control your Art-Net nodes just like DMX interfaces that are plugged into your PC via USB.