HEIDENHAIN TNC 407 (280 580) ISO Programming User Manual
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TNC 426/TNC 425/TNC 415 B/TNC 407
4
Programming
4.6 Entering Miscellaneous Functions and Program Stop
Some M functions are not effective on certain machines. The machine tool builder may also add some of
his own M functions. Refer to your machine manual for more information.
The M functions (M for miscellaneous) affect:
• Program run
• Machine functions
• Tool behavior
The back cover foldout of this manual contains a list of M functions that are
predetermined for the TNC. The list indicates whether an M function
becomes effective at the start or at the end of the block in which it is
programmed.
An NC block can contain several M functions as long as they are inde-
pendent of each other. Refer to the overview on the last cover page to
see how the M functions are grouped.
A program run or test run will be interrupted when it reaches a block
containing G38.
If you wish to interrupt the program run or test run for a certain length of
time, use the Cycle G04: DWELL TIME (see page 8-53).