RE: G02 is making two turns instead of one

["Eding, Bert" <b.eding-at-Nyquist.com>]

This problem may have to do with the following:

Some time ago there was an error when trying to to a full circle,
the problem was solved by a workaround in the file canon.cc.
However the real problem was inside the posemath library,
this problem I have solved and is now merged by Will in the 
sources.

However the workaround fix in cannon.cc is still there, this may cause
two circles instead of one. The workaround in cannon.cc (testing on
full circle and adding one to turn if so) should be removed.
I guess this is work for Will.

Regards,
Bert






-----Original Message-----
From: Max Heise [mahe-at-bandstahlschnitte.de]
Sent: vrijdag 23 februari 2001 10:38
To: Multiple recipients of list
Subject: G02 is making two turns instead of one


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Hello list,

yesterday I ran into a kind of weird problem.
I made, with lots of help from other-thanks again, emc-1.17 run.
The stg card drives my machine just fine. However, when I tried to run a
small
test .ngc file, I noticed, that G2 is making two full 360 degrees turns
instead
of one. The offending line is:
N170 G2 X0 Y0 I-15 J0 Z-360
X and Y axis are linear, Z is an angular axis were the tool is mounted.
Z-360 should turn the tool a any moment of the movement tangential to the
direction of the movement.
To see the context, please see the attached file
plottest1.ngc. With the last older emc distro I tried and which is still on
the
same machine, emc-15-Mar-2000 this does not happen.
I include my ini, var, nml etc. file for completeness.
The machine this is happening on is RH6.1, rtlinux-2.2a, kernel 2.2.14 and
emc-1.17.

Another question concerning homing. My machine is using heidenhain scales
for
the x and y axis feedback to emc. The current behaviour of emc with my setup
when homing the axis is to set 0.0 when it gets the marker input of the
scale.
Unfortunately this can be somewhere just in the middle of the machine. It
does
not look for the home switch and then look for the the marker input as I
think
it should.
What am I doing wrong ?

Thanks for your time.

Regards
Max

--
Max Heise <max.heise-at-gmx.net>
Student Mechatronik/Automatisierungstechnik
PGP public key from:
http://www.fht-esslingen.de/~mahemt01/pgp50i.pub or any keyserver





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