Note
G2 and G3 are modal.
The default settings G90/G91 absolute and incremental dimensions are only valid for the circle
end point.
Per default, the center point coordinates I, J, K are entered in incremental dimensions in
relation to the circle starting point.
You can program the absolute center point dimensions in relation to the workpiece zero block-
by-block with: I=AC(...), J=AC(...), K=AC(...). One interpolation parameter I, J, K with value
0 can be omitted, but the associated second parameter must always be specified.
Examples
Example 1: Milling
Center point data using incremental dimensions
N10 G0 X67.5 Y80.211
N20 G3 X17.203 Y38.029 I–17.5 J–30.211 F500
Center point data using absolute dimensions
N10 G0 X67.5 Y80.211
N20 G3 X17.203 Y38.029 I=AC(50) J=AC(50)
Fundamentals
Programming Manual, 01/2015, 6FC5398-1BP40-5BA2
Motion commands
10.6 Circular interpolation
183