when i use G55 and i change the Z coordinate to cero and then to 8 or any value  and then cero again to get my new cero on Z. my part does not have the height expected.seems like save the last height on z axis.

i lost my old computer with XP WORKING  without any trouble.

 and now i am using windows 7 32 bits with a  PCI PARALLEL CARD.

motor are configured and the accuracy too.

ANY IDEAS

MACH VERSION 3.043.066
Thanks
Antonio