Re: NAN Bug with circular moves

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

Hi,

Thanks for the comments Jon, I realised after I sent my last post that I
obviously loused things up by adding in to the program line a 'z' component
but no 'k' component. As I said I am still very much a tyro at this and I'd
forgotten about 'k' so, presumably, the line I fed the program was telling
the cutter to start from somewhere it wasn't and, by inference of 'k', go to
where it was. As I see it though, this is still a problem as obviously EMC
is still a bit light on error checking and I would have expected it to tell
me I couldn't do this and shut down the machine safely.  I think perhaps in
my case, the final machine should be fitted with an appliance which slaps me
around the face with a wet kipper if I try to enter a silly command!!

Ian
--
Ian W. Wright
Sheffield  UK


----- Original Message -----
From: Jon Elson <jmelson-at-artsci.wustl.edu>
> Oh, oh!  This is helical interpolation, and is necessary for milling
threads.
> I have a program that writes RS-274D code that uses this, and it worked
> some months ago, last time I used it.  If we have loused up helical
> interpolation, then we need to get it fixed.