HEIDENHAIN TNC 426B (280 472) Training ISO programming - Manual (Page 54)

Solution:
HEIDENHAIN Basic Course ISO G 426
Contour cycles SL II,
Roughing out kidney
62190/3 F06
SPGM N85 G98 L1 *
N90 G01 G42 X+5 Y+30 *
N95 I+15 J+30 *
N100 G02 X+6,645 Y+35,495 *
N105 G06 X+55,505 Y+69,488 *
N110 G05 X+58,995 Y+30,025 R-20 *
N115 G06 X+19,732 Y+21,191 *
N120 G02 X+5 Y+30 *
N125 G98 L0 *
N999999 %62190 G71 *