HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 302)

302 Programming: Miscellaneous Functions
9.4 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 G41 or G42. M120 is then effective from this block until
„ radius compensation is canceled with G40
„ M120 LA0 is programmed, or
„ M120 is programmed without LA, or
„ another program is called with %
„ the working plane is tilted with Cycle G80 or the PLANE function
M120 becomes effective at the start of block.
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 G25 and G24, the blocks before and
after G25 or G24 must contain only coordinates in the working plane.
„ Before using the functions listed below, you have to cancel M120
and the radius compensation:
„ Cycle G60 Tolerance
„ Cycle G80 Working plane
„ PLANE function
„ M114
„ M128
„ TCPM FUNCTION