Re: Re: CNCPro

Darrell wrote:

> From: "Darrell" <dgehlsen@...>
>
> >> Does EMC do radius comp?
> > > reliably?
> >
> > Absolutely! It works in all movement modes except G00, which
> > sort of makes sense.
>
> Do you mean that if you turn on say G41 with a G00 move that you then
> have
> to do a feed move before the tool is properly offset?
> With AHHA, the tool is offset with a G00 G41 X Y move so you are ready
> to
> plunge.

No, I ran into this just this weekend. You get an error message that
says
rapid moves are not permitted with cutter diameter compensation active,
or
something of that nature. Not a big deal, you generally wouldn't want
to do
rapid feeds with diameter comp on, anyway. I hit the error because I
had a
G00 by accident as the move where the diameter comp was to be
interpolated
in. The first move when diameter comp is activated interpolates the
compensation
in gradually over the length of the move. My Allen-Bradley CNC did the
same,
so I think that is the normal mode.

I generally plunge to depth BEFORE I activate the diameter comp, so that
the
tool plunges when NOT in contact with the work.

This is totally different behavior than how the tool length offset works
(that's
G43, I think). With the length offset, it just fully activates the
offset immediately
on the first Z move.

Jon