| PIN | DIR | FUNCTION | PIN | DIR | FUNCTION | |
|---|---|---|---|---|---|---|
| 1 | In | Index + | 6 | In | Index - | |
| 2 | In | Phase A + | 7 | In | Phase A - | |
| 3 | In | Phase B + | 8 | In | Phase B - | |
| 4 | - | +V | 9 | - | +V Return (gnd) | |
| 5 | In | Home Switch |
Note: pins 4 and 9 (+V/gnd) are routed from a terminal strip on the rear of the Step Pak chassis. This power is separate from the power delivered to the motor connector pins V and R.