I added a pendant to my machine I connected the pendant though a Cnc4PC C-22 Interface board everything seems to function expect for when I jog from the pendant it only goes in one direction using the handwheel it works fine in continuos mode from the keyboard in mach3 diagnotics the port leds are acting funnyalso I tried to calibrate the mpgthe cal detent size was 131072 ,it seemed high and when I turn my compuer on with the C-22 board connected the computer locks up after bI disconnect the board and reboot the computer it works fine then I plug the cable back in and everything is fine the pendant works up to the piont of not being able to jog in both directions.