HEIDENHAIN TNC 640 (34059x-04) ISO programming - Manual (Page 355)

Dynamic Collision Monitoring (software option) 11.2
11
TNC 640 | User's Manual for DIN/ISO Programming | 3/2014
355
Collision monitoring in Automatic operation
The handwheel superimpositioning function with
M118 in combination with collision monitoring is only
possible in stopped condition.
If collision monitoring is on, the TNC shows the
symbol in the position display .
If you have deactivated collision monitoring, the
symbol for collision monitoring flashes in the
operating-mode bar.
Danger of collision!
The M140 (See "Retraction from the contour in the
tool-axis direction: M140", page 342) and M150
(See "") functions might cause non-programmed
movements if the TNC detects a collision when
executing these functions!
The TNC monitors motions blockwise, i.e. it outputs a warning in
the block which would cause a collision, and interrupts program
run. A reduction of the feed rate, as with Manual Operation, does
not occur. The TNC outputs a collision warning if two objects
monitored for collision approach each other within a distance of 5
mm.