If you really want to control the motor from the motion controller, you could take the 0-10v output spindle speed control signal (if it has that), put it through a voltage devider ckt and send 0-5v to an analog input of the Arduino, then generate the pwm based on that. Easy to do the control, but why would you want to?
Go nuts man.
thanks Roaster for your reply detailed, I have begun a project for conversion mini mill,and had already replace the spindle and motor original with a brushless motor, spindle ER11 and pulley with belt. Then I have a cnc system with four motor stepper Nema23, breakboard card ST-V2 and I need of drive the brushless motor.
Now you can explain in detailed info, also scheme draw it's a good, how to wire from my terminals 0-10V pvm on breakboard with the voltage devider to motor brushless ?
I give to power the ESC controller a power supply PSU 12V. 30A, it's work fine