Hello Bert,
Do you mean artnet input or output?
For Artnet to Smode, you can learn the three components R, G and B with the classical "Learn" feature.
For Smode to Artnet, there is a tool, which you can find in the instantiator by typing "DmxColor" inside it (after having selected a compo or a scene).
Both features require Smode Station,
Best,
Francis.