HEIDENHAIN TNC 128 (77184x-02) - Manual (Page 252)

Programming: Miscellaneous functions
9.1 Entering miscellaneous functions M
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TNC 128 | User's Manual HEIDENHAIN Conversational Programming | 5/2014
9.1 Entering miscellaneous functions M
Fundamentals
With the TNC's miscellaneous functions—also called M functions
—you can affect
the program run, e.g., a program interruption
the machine functions, such as switching spindle rotation and
coolant supply on and off
the path behavior of the tool
The machine tool builder may add some M functions
that are not described in this User's Manual. Refer to
your machine manual. Refer to your machine manual.
You can enter up to four M functions at the end of a positioning
block or in a separate block. The TNC displays the following dialog
question:
Miscellaneous function M ?
You usually enter only the number of the M function in the
programming dialog. Some M functions can be programmed with
additional parameters. In this case, the dialog is continued for the
parameter input.
In the
Manual Operation and El. Handwheel modes of operation,
the M functions are entered with the
M soft key.
Please note that some M functions become effective
at the start of a positioning block, and others at the
end, regardless of their position in the NC block.
M functions come into effect in the block in which
they are called.
Some M functions are effective only in the block in
which they are programmed. Unless the M function
is only effective blockwise, either you must cancel it
in a subsequent block with a separate M function, or
it is automatically canceled by the TNC at the end of
the program.