CNCIF-L 37-pin Ah-ha! Bus Pin-out -
Pins 1-17  GROUND          System Ground
Pins 18,19 Future Use      Don't connect to these wires.
Pin 20     !X Step Output  To stepper motor driver cards.
Pin 21     X Direction     Output  To stepper motor driver cards.
Pin 22     !Y Step Output  To stepper motor driver cards.
Pin 23     Y Direction     Output  To stepper motor driver cards.
Pin 24     !Z Step Output  To stepper motor driver cards.
PIn 25     Z Direction     Output  To stepper motor driver cards.
Pin 26     !W Step Output  To stepper motor driver cards.
Pin 27     W Direction     Output  To stepper motor driver cards.
Pin 28     !Enable1        Output  Enables Axis 1 SD6/12 Driver
Pin 29     !Enable2        Output  Enables Axis 2 SD6/12 Driver
Pin 30     !Enable3        Output  Enables Axis 3 SD6/12 Driver
Pin 31     !Enable4        Output  Enables Axis 4 SD6/12 Driver
Pin 32     !M0             Output  Tells SD6/SD12 drivers to output 2nd
                           exception set
Pin 33     !ExceptionA     Input
Pin 34     !ExceptionB     Input
Pin 35     !ExceptionC     Input
Pin 36     !ExceptionD     Input

CNCIF-L 37-pin Parallel Port Emulation Pin-out -

Pins 1-17  GROUND          System Ground
Pins 18,19 Future Use              Don't connect to these wires.
Pin 20     X Step  Output  To your stepper motor driver card.
Pin 21     X Direction     Output  To your stepper motor driver card.
Pin 22     Y Step  Output  To your stepper motor driver card.
Pin 23     Y Direction     Output  To your stepper motor driver card.
Pin 24     Z Step  Output  To your stepper motor driver card.
Pin 25     Z Direction     Output  To your stepper motor driver card.
Pin 26     W Step  Output  To your stepper motor driver card.
Pin 27     W Direction     Output  To your stepper motor driver cards.
Pin 28     Enable  Output  To your stepper motor driver cards, all axes.
Pin 29     Idle    Output  To your stepper motor driver cards, all axes.
Pin 30     Aux Out 0       Output  To your M-Code device (coolant, clamp,
                           etc.)
Pin 31     Aux. In 0       Input   From device or switch you want to sense.
Pin 32     W Home  Input   Pull this line LOW to indicate W Home
Pin 33     X Home  Input   Pull this line LOW to indicate X Home
Pin 34     Y Home  Input   Pull this line LOW to indicate Y Home
Pin 35     Z Home  Input   Pull this line LOW to indicate Z Home
Pin 36     Emergency       Input   Pull this line LOW to indicate Emergency,
                           overtravel, etc.

Auxiliary I/O Parallel Port Interface -
Please contact Ah-ha! Design Group at 612-331-7657 for more information.