Re: Problem with G02/G03 full circles using IJK

[Maximilian HEISE <max.heise-at-gmx.net>]

Hi Mike,

what you describe sounds weird.

As always:
1. What version of emc are you running ?
2. Any messages in the terminal window from where you started your .run file, 
you might have to scroll back a bit ?
You might want to display more information. In your ini file look for :
; Debug level, 0 means no messages. See emc/src/emcnml/emcglb.h for others
; DEBUG =               0x00000003
; DEBUG =                 0x00000007
DEBUG =               0x7FFFFFFF
If this is not already to full debug change it to the example above.

Please correct me if we disagree with what this gcode should do
> This block does not work
> %
> G17 G90 G20
(xy-plane, absolute distance mode, inches for length units)
> G1 X1.0 Y1.0 Z1.0
> G3 X1.0 Y1.0 I.8 J0.0 
ccw startpoint sp(1/1)==endpoint ep(1/1), centerpoint cp(1.8/1)
> %
>
> This block works
> %
> G17 G90 G20
> G1 X1.0 Y1.0 Z1.0
> G3 X1.0 Y1.0000000000001 I.8 J0.0
ccw startpoint sp(1/1),endpoint ep(1/1.0000000000001), centerpoint cp(1.8/1)
I personally do not think that an value of 10^-13 inch should make any 
impression to emc because, if I recall correctly, an atom's radius is about 
10^-10 m. EMC is not that good ..... yet ;-)
Nevertheless it apparently does make a difference.
> %
>
> This block works
> %
> G17 G90 G20
> G1 X1.0 Y1.0 Z1.0
> G3 X1.0 Y1.0 I.9 J0.0
ccw startpoint sp(1/1)==endpoint ep(1/1), centerpoint cp(1.9/1)
> %
I think that your first example should work if your third does because the 
third is closer to all axis limits.


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