HEIDENHAIN TNC 426B (280 472) ISO programming - Manual (Page 136)

7 Programming: Miscellaneous functions 120
7.1 Entering Miscellaneous Functions M
With the TNC's miscellaneous functions - also called M functions -
you can affect:
■ Program run, e.g., a program interruption
■ Machine functions, such as switching spindle rotation and coolant
supply on and off
■ Contouring behavior of the tool
The machine tool builder may add some M functions
that are not described in this User's Manual. Your
machine manual provides more detailed information.
You can enter a miscellaneous function M in a positioning block or
as a separate block.
You usually enter only the number of the M function. With certain
miscellaneous functions, the TNC asks you to enter parameters
after you press the ENT key.
In the operating modes Manual and Electronic Handwheel, you
enter the miscellaneous functions with the soft key M.
Please note that some F functions become effective at the start of
a positioning block, and others at the end.
M functions come into effect in the block in which they are called.
Unless the M function is only effective blockwise, it is canceled in a
subsequent block or at the end of the program. Some M functions
are effective only in the block in which they are called.
7.1 Ent
er
ing Miscellaneous F
unctions M
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