Youmile DC 12 24V CNC Breakout Board 5 axis MACH3 Interface Optical Coupler board,with Parallel Port cable USB XH2.54 4P for Stepper Motor Driver

【working principle】--All input signals are isolated by optical coupling, and can be connected to emergency stop, tool setting, limit, etc. 【easy to operate】--One-way relay output port can control the spindle switch. The output port is P17 port.Open all 17 ports, can be connected with optocoupler drive, can control 5-axis stepper motor.P1 acts as a PWM output and can control the spindle governor with optocoupler input. 【high security】--12-24V wide peripheral voltage input, with anti-reverse connection function. USB power supply and peripheral power supply are separated to ensure computer security. 【One-way relay 】--One-way relay output port can control the spindle switch. The output port is P17 port. 【Driver Information】--For detailed driver information, please visit: https://bit.ly/3NLjrZD