Talk:CNC router

Hi all.I have the controller board pictured on this page http://www.buildbrighton.com/wiki/CNC_router. My questions are

1) The power supply requires 12/36 volts and a ground.Do i connect the negative to the ground and if not how do i connect power supply?

2) Their is a min and mout connection requirement.What do these serve?

3) Is their a pdf i can get for this board?

Any help with the above would be greatly appreciated.

Many thanks.

Steve.