Working in the open loop mode. Support servo and step motor control with pulse. the control signal is PULSE and DIRECTION. Self-calibration function and can compatible with other capacity sensors. Laser head status display in realtime. and alarm information display. Focus distance modified on line. support the response speed and rise height setting with touch screen monitor. Support laser head crash alarm, limit protection and servo alarm protection. Multiple general purpose outputs and inputs. 1 channel analog input and 1 channel analog input. Support firmware update by U disk.