Default: 1024
Range: 1 to 1024 steps per millisecond
This parameter is available only on stepper axes. It is used to ensure that the stepper is never driven beyond a given rate. If the axis is requested to give more steps per millisecond than allowed by this parameter, the Overdrive error bit will be set in the Status word. The axis can be set up to automatically stop based on this bit using the Auto Stop Mask parameter.
Following are three cases in which this parameter would be used:
Limit the step rate to the capability of the motor.
Limit the step rate to the capability of the system.
Limit the step rate to a safe speed, especially during startup.
Because this parameter is given in steps per millisecond, this parameter should be set to 1/1000th of the maximum step frequency desired. For example, to limit the output to 100 kHz, enter 100 for this parameter.
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