I am not aquainted with that control either, but at least is sounds as though the cnc side has control of the servo's if you cannot turn them under power. Is there any status indicated on the screen as to what mode it is in? Also, on some systems like fanuc etc the feedhold is an active low button, so if the switch opens up, you get a feed hold condition. Was this machine supposed to be working before you purchased it? If so, would a call into the previous owner be possible?
Al
CNC, Mechatronics Integration and Custom Machine Design
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E.