dear...
i have set my G54 to  x 100    y 100 and z to -10
then i did homing to all axis.
now machine coordinate DRO is x0 y0 z0
then i select the G54 and click  go to zero
the machine coordinate moves to x100 y100 and z50   why z 50 i dont know why?
when i switch to offset coordinate it shows in the DRO  x0 y0 and z40......why z40??
plz any help to solve this problem..
best regards...and thanks in advance.