Set Microsteps Per Step establishes the microstepping resolution of the drive. The default and recommended value is 256 microsteps per step. However at very high stepper motor speeds the step frequency limit might be encountered before the motor has gone as fast as it can. In this case reducing the microstepping resolution could provide more speed.
Microstepping resolution choices are limited to the following values: 256, 128, 64, 32, 16, 8, 4, and 2.
If the parameter is not one of the provided values then a Parameter Out Of Range Escape Code will occur.