HEIDENHAIN TNC 640, User Manual, Page: 497 / 948

Miscellaneous Functions | Miscellaneous functions for path behavior
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HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
497
Suppressing touch probe monitoring: M141
Standard behavior
If the stylus is deflected, the control issues an error message as
soon as you want to move a machine axis.
Behavior with M141
The control moves the machine axes even if the touch probe is
deflected. This function is required if you wish to write your own
measuring cycle in connection with measuring cycle 3 in order to
retract the stylus by means of a positioning block after it has been
deflected.
NOTICE
Danger of collision!
The function
M141
suppresses the corresponding error message
if the stylus is deflected. The control does not perform an
automatic collision check with the stylus. Because of this
behavior, you must check whether the touch probe can retract
safely. There is a risk of collision if you choose the wrong
direction for retraction.
Carefully test the NC program or program section in the
Program run, single block
operating mode
M141
functions only for movements with straight-line
blocks.
Effect
M141
is effective only in the NC block in which
M141
is
programmed.
M141
becomes effective at the start of the block.