135
96-8000 Rev AC
May 2010
G
&
M
Codes
Settings
ner rounding), as described in the G01 definition.
Using I, J, K addresses
I, J and K address are used to locate the arc center in relation to the start point.
In other words, the I, J, K addresses are the distances from the starting point
to the center of the circle. Only the I, J or K specific to the selected plane are
allowed (G17 uses IJ, G18 uses IK and G19 uses JK). The X, Y, and Z com
-
mands specify the end point of the arc. If the X, Y, or Z location for the selected
plane is not specified, the endpoint of the arc is the same as the starting point
for that axis.
To cut a full circle the I, J, K addresses must be used; using an R address
will not work. To cut a full circle, do not specify an ending point (X, Y and Z);
program I, J or K to define the center of the circle. For example: G02 I3.0 J4.0
(Assumes G17; XY plane)
Using the R address
The R-value defines the distance from the starting point to the center of the
circle. Use a positive R-value for radii of 180° or less, and a negative R-value
for radii more than 180°.
Programming Examples
.
1.5
135
O
R 1.00
.5Ø
225
O
.5Ø
1.5
R 1.00
G90 G54 G00 X-0.25 Y-.25
G01 Y1.5 F12.
G02 X1.884 Y2.384 R1.25
G90 G54 G00 X-0.25 Y-0.25
G01 Y1.5 F12.
G02 X1.884 Y0.616 R-1.25
Corner Rounding and Chamfering example:
G00 X1. Y1.
G01 Z-0.125 F30.
G01 X5 ,C0.75 F12
G01 Y1.75
G01 X6. ,C0.25
G01 Y5. ,R06.25
G01 X5.
G01 Y8. ,C0.5
G01 X1. ,R1.
G01 Y1.
G00 X0.75 Y0.75
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