It is a controller that integrates logic control, multi-channel optocoupler input and output, digital tube or liquid crystal display. It adopts advanced microprocessor, integrates the basic functions of stepper motor control, is equipped with high-speed pulse output, multi-channel optocoupler isolation input and output, can control multi-step stepper motor or DC servo motor, and can be separated by optical The I/O interface facilitates automatic control of the device.