@Guus I have the same machine that I am also trying to get to work with RRF. Thanks for sharing your progress.

I've got the axis working, but haven't had any luck with the spindle. Did you work out how to control it? The manual mentions PWM control and that 7000 - 30,000rpm equates to 1000-1400 microseconds (which I believe is 715-1000Hz).

I'm a noob with RRF so any information you could share would be much appreciated.

Aaron