HOG4 Artnet with ETC Equipment

Recently was in a space that used NET3 Two Port Gateway. Is the only thing I need to do to hook into their system is plug a cat5 in the fixture slot on the board and patch what universe I want the equipment in?

Secondly, Power for moving lights going through a Unison Echo Relay Panel to turn all the moving lights on. They have an Avolites Diamond 4 that is already programmed to turn them on and when I plug in they have to turn the panel on to manual and flip all the individual breakers to on and off. Can I turn them to a non dim and put at 100% and Park?

Here are the links for the two products they have.

www.etcconnect.com/product.overview.aspx?Id=22137
www.etcconnect.com/product.overview.aspx?ID=20094

Let me know.