HEIDENHAIN iTNC 530 (340 420) ISO programming - Manual (Page 186)

186 7 Programming: Miscellaneous Functions
7.
1 Ent
er
ing Miscellaneous F
unctions M
7.1 Entering Miscellaneous
Functions M
Fundamentals
With the TNC’s miscellaneous functions—also called M functions—
you can influence:
n
Program run, e.g., a program interruption
n Machine functions, such as switching spindle rotation and coolant
supply on and off
n Contouring behavior of the tool
You can enter up to two M functions at the end of a positioning block.
You usually enter only the number of the M function. 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 Electronic 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.
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.
The machine tool builder may add some M functions that
are not described in this User’s Manual. Refer to your
machine manual.