On Fri, 19 Mar 2021 at 11:58, andy pugh <bodge...@gmail.com> wrote: > On Fri, 19 Mar 2021 at 01:46, John Dammeyer <jo...@autoartisans.com> > wrote: > > > I take it then that you can't actually move the spindle to the index > position unless you have some sort of control beyond velocity? > <https://lists.sourceforge.net/lists/listinfo/emc-users>
My machine has a BT30 and an ATC. The Fanuc AC spindle motor has no encoder, but there is an inductive sensor on the spindle aligned for the ATC. When you perform an M19 it spins a few times then stops on the sensor. (lit) I suspect it turns a few times and takes a 'snapshot' of the drive waveform. It then simply applies that waveform to hold the spindle in the correct position On a M19, it holds the spindle quite firm if I try to rotate it by hand, but have not tried to move it past the encoder. I suspect it will give an error.. Roland <https://lists.sourceforge.net/lists/listinfo/emc-users> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
