If you already have installed Mach3, skip this step. 1 Status LED, indicate connection status on the board.4 general-purpose isolated relay drive output interface, can drive four relays for controlling the spindle starts, forward rotating and reverse rotating, pumps and other device.4 general-purpose inputs, you can connect the limit switch, estop switch, probe switch, back to zero and other device.Have 0-10V output port, you can use MACH3 software to control the spindle motor speed.Need use external 24V DC power supply to isolate USB and external port, and to make the system more stable.Support for connecting electronic hand wheel.Maximum step-pulse frequency is 100KHz, which is suitable for the servo or stepping motor.Support for 4-axis linkage, you can connect four stepper motor drives or servo drives.
