I read this on another website:
Can anyone explain with more detail on how to set this up with mach3 settings / configuration? I have tried looking all over the net for an explanation on how to set this up and can't find one! It would be greatly appreciated!The floating head works like this.. The Z lowers untill it hits the plate and keeps going untill it hits your floating head limit switch then comes up to 0 plus your pierce height. In your g-code you tell it the switch travle so it adds that to your Z. The purpose of the floating head is to tell Mach3 where the top of the metal is before the pierce
TIA