HEIDENHAIN TNC 620 (73498x-02) ISO programming - Manual (Page 183)

Approaching and departing a contour 6.3
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TNC 620 | User's Manual for DIN/ISO Programming | 5/2013
183
Example NC blocks
N50 G00 G40 G90 X-30 Y+50 * Starting point
N60 G01 G41 X+0 Y+50 F350 *
First contour point
N70 G26 R5 * Tangential approach with radius R = 5 mm
. . .
PROGRAM CONTOUR BLOCKS
. . .
Last contour point
N210 G27 R5 * Tangential departure with radius R = 5 mm
N220 G00 G40 X-30 Y+50 *
End point