Feed to Sensor will ask for many of the same parameters as the other feed programs: Speed, accel, decel and direction. You also need to specify a distance. That's because the PSMCC1 must have enough space to decelerate to a stop once the sensor is tripped. The higher the speed, the longer it will take to stop. If the decel rate is increased, then the motor can stop in fewer steps. The "Minimum Distance" box tells you how many steps you must allow, based on the speed and decel rate that you've set. You can't set the distance to less than this minimum.