Feature:

This module is a pulse generation module, supply the control signal to stepper driver.
To control the stepper motor, it must be equipped with a drive.
The controller has high 5.4k-160khz, middle 540-16.6khz, low 80-2.4khz total of 3 kinds of low frequency signal can be used to select the jumper.
The controller can generate pulse signals and PWM signal. You can choose using J3.
The frequency of measurement: PUL and common cathode end.

Different stepper driver may mark different name
EN=ENA=FREQ       Enable
PUL=PULS=CLK     Pulse
DIR=CW=CWW      Direction