Re: NAN Bug with circular moves

["Ian Wright" <Ian-at-iw63.freeserve.co.uk>]

Hi Will,

I finally got round to compiling in your 'fix' file and playing around with
the system again. The program you suggested runs fine and has obviously
sorted out the initial problem, however, being of an adventurous nature I
seem to have found yet another way of goofing it up! - sorry.

Being still a relative dimwit at this cnc stuff and yet being dazzled by the
apparent magic with which these things are bestowed, I reasoned that, now
the tool can be made to describe a complete circle with only such a simple
command, could it also do something really clever like machine a circular
spiral - as in producing a snail cam for example. So I stuck a 'z' component
in and guess what - same problem again and nothing told me I couldn't do it
before the (virtual) tool ascended into orbit with the 'x' and 'y' axes
trazzing off at a 45 deg. angle at high speed. Try it - the line I used was
g2x5y0z1i-5j0 in place of your second line, a simple change but very
effective!!!  ;o)

Ian
--
Ian W. Wright
Sheffield  UK


----- Original Message -----
From: Will Shackleford <shackle-at-cme.nist.gov>
>
> The attached file contains one possible fix for the NAN bug that occurs
> with circular moves that start and end at the same location.
>
> To try it, copy it to emc/src/emctask/emccanon.cc, recompile and
> run a program similiar to
>
> g1x5y0
> g2x5y0i-5j0