On Wed, 7 Dec 2022, andy pugh wrote:
Date: Wed, 7 Dec 2022 11:50:09 +0000
From: andy pugh <bodge...@gmail.com>
Reply-To: EMC developers <emc-developers@lists.sourceforge.net>
To: EMC developers <emc-developers@lists.sourceforge.net>
Subject: [Emc-developers] Arc Bug, help needed.
In February I fixed this bug:
https://github.com/LinuxCNC/linuxcnc/issues/1528
But, it seems, I failed to properly consider full-circle spiral arcs, and
the test was wrong.
https://github.com/LinuxCNC/linuxcnc/issues/2169
(Note that this issue report was _not_ raised by the original reporter,
and furthermore seems to show a _different_ issue.
I investigated and found a test case that I could reproduce, and put in a
fix for that. (linked in the issue report above)
However it is reported that the original bug (that I have never
reproduced) still exists.
Here is the problem description:
"if open axis.
Comand g2 x0 y0 j5 z-2 f1000.
The machine not execution g2 , but only Z-2."
I think that the system needs to be set up for immediate homing to 0,0,0
as I have an unconfirmed report that this specific problem does not occur
if the axes have moved. (But then the test cases that Tom_L shows in the
bug report has the third arc going wrong too)
I don't get the bug with 2.10, immediate homing, first move after linuxcnc
loaded or with previous motion either with MDI or as 2 line ngc:
g2 x0 y0 j5 z-2 f1000
m2
Preview and path are OK
Peter Wallace
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