Re: CNC division

Thanks Jon,

That's about what I've been expecting. I suppose one could do a G92 (a
home?) to "reset" at a point, if a "shortest path" was wanted.

Alan KM6VV

Jon Elson wrote:

>
> IMService wrote:
>
> > > Date: Thu, 05 Apr 2001 15:52:20 -0700
> > > From: Alan Marconett KM6VV <KM6VV@...>
> > >Subject: Re: CNC division
> > >
> > >
> > >I'm not fully decided, but I THINK I'd rather not have the table "wrap
> > >around", I.E., I'll go from 300 deg to 400 deg, when I want to get
> > >around to 40 deg again. If I "wrap" a long rotary move to my 'Y' axis,
> > >it works this way. If I want to cut 3 threads, I would just go 360*3
> > >degrees.
> > >
>
> I'm pretty sure EMC would allow a spec of 400.0 degrees to cause the
> axis to turn one full turn plus 40 degrees. If you then sent it to
> zero, it would turn back the full 400 degrees, not stop the first time
> it passes the zero position. Now, if you did a HOME operation from
> the 400 degree pos. it would only go back 40 degrees and hit the home
> switch. If you were cutting something with helical grooves in it,
> like a screw compressor rotor, it might be very important to make some
> operations move past the zero position properly.
>
> Jon