HEIDENHAIN ITNC 530 - 6-2010 DIN-ISO PROGRAMMING User Manual page 195

Example NC blocks
N50 G00 G40 G90 X-30 Y+50 *
N60 G01 G41 X+0 Y+50 F350 *
N70 G26 R5 *
. . .
PROGRAM CONTOUR BLOCKS
. . .
N210 G27 R5 *
N220 G00 G40 X-30 Y+50 *
HEIDENHAIN iTNC 530
Starting point
First contour point
Tangential approach with radius R = 5 mm
Last contour point
Tangential departure with radius R = 5 mm
End point
195