[jcnewbie]

How does one interpret I'J'K's output. I have an example here.

I have an arc of R1.25 and the center of the arc is at X2.0 Y2.0 from the origin.

G02 X3.25 y2.0 I -1.0483 J-0.6808
G02 X2.0 Y0.75 I-1.25 J0
G02 X0.75 Y2.0 I0 J1.25
G02 X2.0 Y3.25 I1.25 J0
G02 X3.0483 Y2.6808 I0 J-1.25
G00 Z0.1

Any help would be great

[valmet58]

that might help http://www.etec.wwu.edu/faculty/McKell/nccnc_prog3.pdf

[jpgdesigns]

looking at your code... it looks to be absolute X & Y with I & J incremental...
That means that the X & Y are the end of the arc relative to your origin and the I & J are the center of the current arc relative to the X & Y coordinate.

For example if you want a complete circle in one code then it would look like this:
G02 X3.25 Y2 I-1.25 J0 (1.25 rad centered at X2 Y2)

If you wanted to code it in quadrants it would look like this:
G01 X3.25 Y2 (start point "3 o-clock")
G02 X2 Y0.75 I0 J1.25 (first quadrant clockwise "6 o-clock")
G02 X0.75 Y2 I1.25 J0 (second quadrant clockwise "9 o-clock")
G02 X2 Y3.25 I0 J-1.25 (third quadrant clockwise "12 o-clock")
G02 X3.25 Y2 I-1.25 J0 (fourth quadrant clockwise "3 o-clock")

Hope this helps...