Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: turbothis on October 17, 2010, 03:46:14 PM

Title: so why does mach3 alter my gcode!
Post by: turbothis on October 17, 2010, 03:46:14 PM

my code comes up fine on my cam preview and other mach driven mill.
the mill i want to use comes up with its own version of my gcode!!!!!
what makes it do this???????????????????????????????????

this code is off the same thumb drive
what it is supposed to look like.
(http://img832.imageshack.us/img832/2294/37140248.png) (http://img832.imageshack.us/i/37140248.png/)

and this is the super magic mach3 version it thinks i cant live without!
(http://img176.imageshack.us/img176/6669/26145561.png) (http://img176.imageshack.us/i/26145561.png/)

Title: Re: so why does mach3 alter my gcode!
Post by: Hood on October 17, 2010, 04:07:22 PM

General Config change the IJ mode.
Hood

Title: Re: so why does mach3 alter my gcode!
Post by: turbothis on October 17, 2010, 06:10:27 PM

nice, thanks
what does ij stand for?

Title: Re: so why does mach3 alter my gcode!
Post by: RICH on October 17, 2010, 07:18:02 PM

I is the location of the starting point of the arc and J defines where the arc center is from the starting point. Note that  there is Absolute
distance mode ( G90 ) and also Incremental distance mode ( G91 ).

RICH

Title: Re: so why does mach3 alter my gcode!
Post by: ger21 on October 17, 2010, 08:00:07 PM

Sorry Rich, but that's not correct.

I is the X coordinate of the arc center, and J is the Y coordinate of the arc center. In absolute IJ mode, they specify the actual arc center. In Incremental IJ mode, they are relative to the start of the arc.

Title: Re: so why does mach3 alter my gcode!
Post by: RICH on October 17, 2010, 08:58:05 PM

Thanks Gerry,
Glad somebody keeps me straight ........... ;)
RICH