Today I received the cnc machine I ordered from China (the model is called 60400). I installed Mach3 and passed config. menu setting. In Input signal setting, successfully set up the Emergency signal button of the control box. After all setup, I can forward the motors, but backward button on the keyboard does not do anything. That is to say, X+ works, but X- does not! (Left arrow moves the motor, bat right arrow does nothing).
If I enable direction low from config. menue, then the inverse happens: again the keyboard moves the motors in only one direction.
It is first time in life I've installed Mach3 and met a cnc machine! I tried various settings but can't get out of the problem.
Could anyone please give some idea? May be I must provide more information? If so, what should I add please?