HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 367)

Miscellaneous functions for path behavior 10.4
10
TNC 640 | User's ManualDIN/ISO Programming | 1/2015
367
Danger of collision!
With M140 MB MAX and collision monitoring
simultaneously possible (option #40 enabled,
kinematics with defined collision objects selected),
tool retraction does not terminate at the border of
the traverse range but before a pending collision.
Detected collisions with this constellation do not
generate an error message, but the TNC continues
the NC program from this position. This may cause
unexpected movements or collisions with the
workpiece.
Only use numerical values with collision monitoring
M140.
Check in the
Program run, single block operating
mode whether the actual distance enables collision-
free continuation of the NC program.
If you require
M140 MB MAX, you must select
kinematics without defined collision objects. Please
note that with kinematics without defined collision
objects, collision monitoring is
not
possible.