Hi,
Also, are these the proper forums to ask Mach3 questions in
Yes there is and this is it.
The Ethernet port is part of the PC environment, Mach3 (or Mach4) does no affect that. If you have an Ethernet connected controller
there will be a plugin (.dll file) supplied by the controller manufacturer. It will need to be installed in Machs plugin folder.
When you start Mach you will be asked to select your preferred motion control device, you'll select the plugin an away you go.
What controller have you got? Did you receive a Mach plugin with it? Is it Chinese......if you want help from the manufacturer China
might as well be on another planet......good luck trying to get help from them.
Craig