Denford Novamill Mach3 conversion

[JAZZCNC]

I have a question about the control signal going to the Sprint 400, the manual says 0-10V. Does that mean pulse with modulation, or literally 0-10V as if it were potentiometer control?

Means 0-10v so either potentiometer or 0-10V analog signal from speed controller.

[Miller]

This is what I found in the controller manual. So it looks like a 10v source through an 1k resistor, joint with the PWM output, turns into 0-10V analog?

[irving2008]

That's exactly what it does. The PWM output is active low, i.e. a pull-down to GND. The wider the pulse the lower the average voltage.