Thank you Sir! I am always for saving money, especially where CNC machines are concerned :) I found my manual and it seems to be called Safe Stop in Hitachi terms. I switch the hardware switch S8 on and it auto assigns terminal 3 to the emergency stop signal along with terminal 4. To my suprise, there is even a diagram using a PNOZ safety switch! Off to see what I need to change in EddieCurrent's circuit to a suit the X200.

Cheers
Bruce