On Wednesday 30 October 2013 20:06:47 Bertho Stultiens did opine:
> On 10/30/2013 08:58 PM, Gene Heskett wrote:
> [snip]
>
> > Hmmmm, not at all what I got:
> [snip]
>
> > ( global offset
> > [-0.026255mm,-0.026255mm,-0.026255mm,0.000000mm,0.000000mm,0.000000mm]
> > )
>
> This is why it fails. My code did not initialize the global offsets
> correctly, which had the consequence that the tracked global position
> was off.
>
> > G1 X-0.02625543 Y-0.02625519 Z-0.02625501
>
> The move([0,0,0]) corrected the discrepancy and then the arc works.
>
>
> [snip]
>
> > Works, draws a nominally 20mm diameter spiral, moving z up for
> > nominally 2.25 revolutions in the xy plane. So starting at XYZA =
> > 0.0, 0.0, 0.0, 0.0, the ending position is
> > 0.975, 0.975, 0.975, 0.0.
> >
> > Is that the intended action? Spindle-at-speed display=400, so that
> > works.
>
> The intended action was to start at [0,0,0] and end at [10,10,10] with
> 2.25 revolutions in the xy plane.
>
> The uninitialized global offsets made the IJ calculations of the arc
> incorrect.
>
> As replied earlier, that should now have been fixed in my commit (and
> pushed to the gitorious repo). You should be able to do a "git pull" and
> recompile. Then the coordinates should match up correctly.
They do, at 10 if I switch the display to mm.. This was after the
recommendation to get the fresh copy from gitorious.
One less multi-legged critter. :)
Cheers, Gene
--
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