This option sets the machine position to zero (or max_travel if homing direction is inverted) after instead of before performing the homing pulloff move. When soft limits are enabled, this provides a virtual buffer zone between the machine's 0 and the hardware limit switch that prevents the operator being able to jog right up to the switch and potentially accidentally trigger a hard limit alarm.
This option sets the machine position to zero (or max_travel if homing direction is inverted) after instead of before performing the homing pulloff move. When soft limits are enabled, this provides a virtual buffer zone between the machine's 0 and the hardware limit switch that prevents the operator being able to jog right up to the switch and potentially accidentally trigger a hard limit alarm.