HEIDENHAIN TNC 640 (34059x-02) - Manual (Page 359)

Miscellaneous functions for path behavior 10.4
10
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
359
Restrictions
After an external or internal stop, you can only re-enter the
contour with the function RESTORE POS. AT N. Before you start
the block scan, you must cancel M120, otherwise the TNC will
output an error message.
When using the path functions
RND and CHF, the blocks before
and after
RND or CHF 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
Before using the functions listed below, you have to cancel
M120 and the radius compensation:
Cycle 32 Tolerance
Cycle 19 Working plane
PLANE function
M114
M128
TCPM FUNCTION