HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 296)

296 Programming: Miscellaneous Functions
9.4 Miscellaneous F
unctions f
o
r Cont
our
ing Beha
vior
Effect
M97 is effective only in the blocks in which it is programmed.
Example NC blocks
A corner machined with M97 will not be completely
finished. You may wish to rework the contour with a
smaller tool.
N50 G99 G01 ... R+20 * Large tool radius
...
N130 X ... Y ... F ... M97 * Move to contour point 13
N140 G91 Y-0.5 ... F ... * Machine small contour step 13 to 14
N150 X+100 ... * Move to contour point 15
N160 Y+0.5 ... F ... M97 * Machine small contour step 15 to 16
N170 G90 X ... Y ... * Move to contour point 17