HEIDENHAIN TNC 426 (280 476) - Manual (Page 217)

190 7 Programming: Miscellaneous functions
7.
4 Miscellaneous F
unctions f
o
r Cont
our
ing Beha
vior
Delete modal program information: M142
Standard behavior
The TNC resets modal program information in the following situations:
n
Select a new program
n Execute a miscellaneous function M02, M30, or an END PGM block
(depending on machine parameter 7300)
n Defining cycles for basic behavior with a new value
Behavior with M142
All modal program information except for basic rotation, 3-D rotation
and Q parameters are reset.
Effect
M142 is effective only in the block in which it is programmed.
M142 becomes effective at the start of the block.
Delete basic rotation: M143
Standard behavior
The basic rotation remains in effect until it is reset or is overwritten
with a new value.
Behavior with M143
The TNC erases a programmed basic rotation from the NC program.
Effect
M143 is effective only in the block in which it is programmed.
M143 becomes effective at the start of the block.