Easy Installation: Designed for straightforward setup with host-gnd and motor-gnd connections. FOC Technology: Utilizes FOC (Field Oriented Control) for efficient motor control. NEMA11/NEMA14 Compatibility: Versatile for both NEMA11 and NEMA14 stepper motors Mks Servo 28d High Temperature Resistance: Withstands up to 105, ideal for high-performance 3D printing. Low Noise Operation: Operates at 3 decibels, ensuring a quiet CNC experience. 1. Support 6 working modes: pulse interface (open loop, closed loop, FOC mode), serial interface (open loop, closed loop, FOC mode) 2. Support MODBUS-RTU communication protocol (RS485 version) 3. High-performance FOC vector control algorithm, torque, speed, and position three-loop control 4. Support curve acceleration and deceleration, motor start and stop are smoother 5. Support single-turn unlimited function 6. Support multi-turn limit and left and right limit functions 7. Support direct setting of zero point function 8. Support relative position and absolute position control modes; 9. Support 1-256 arbitrary subdivision steps 10. Built-in 256-step subdivision interpolation algorithm, the motor runs super quiet and ultra-low vibration 11. Maximum input pulse frequency 160KHz, maximum speed 3000RPM+ 12. Real-time update of motor angle information (motor enabled or disabled) 13. Onboard industrial-grade high-precision 16384-line magnetic encoder 14. Onboard 4 high-power MOSFETs, 40V/20A 15. Built-in -485 interface, 256 slave addresses, support group address (RS485 version) 16. Maximum operating current 3.0A, MOSFET continuous operating current 20A (25) Specification:28D Color:As Shown Material:Metal Package Contents: 1 * Closed Loop Stepper Motor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.