HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 207)

HEIDENHAIN TNC 620 207
7.
4 Miscellaneous F
unctions f
o
r Cont
our
ing Beha
vior
Effect
M120 must be located in an NC block that also contains radius
compensation RL or RR. M120 is then effective from this block until
„ radius compensation is canceled with R0, or
„ M120 LA0 is programmed, or
„ M120 is programmed without LA, or
„ another program is called with PGM CALL, or
M120 becomes effective at the start of block.
Limitations
„ After an external or internal stop, you can only re-enter the contour
with the function RESTORE POS. AT N.
„ When using the path functions RND and CHF, the blocks before and
after them must contain only coordinates in the working plane.
„ If you want to approach the contour on a tangential path, you must
use the function APPR LCT. The block with APPR LCT must contain
only coordinates of the working plane.
„ If you want to depart the contour on a tangential path, use the
function DEP LCT. The block with DEP LCT must contain only
coordinates of the working plane.