If an axis only has a single index pulse, methods -10 and -11 can be used to efficiently home to the index signal. In method -11, the axis begins moving in the negative direction and stops when the index signal is detected. If the lower limit switch or the lower hard stop is detected first, the axis reverses direction and continues to search for the index signal. Method -10 is similar to method -11, but the axis initially begins moving in the positive direction.
Figure 19-8: Homing to a Single Index Pulse