Having issues connecting a Martin ether2dmx box as an input to catalyst. Cat set to 2.0.0.1 subnet mask 255.0.0.0
Ether2dmx set to 2.0.0.2 subnet mask 255.0.0.0

I have connected the input ports and all on the box, and shows dmx values coming in from the desk.
Catalyst sees the box but doesn't see any inputs with it configured to universe 1. But if I change that to 17 (next range) it says it as an input, however in dmx viewer there is no data on that address or any address, and there is no colour in the the boxes at the top to suggest a signal.
Have tried it with a pc running a demo of arkaos, and drives it fine.

Am I doing something wrong here?