HEIDENHAIN TNC 320 (34055x-06) ISO programming - Manual (Page 416)

Test run and program run
14.5 Program run
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TNC 320 | User's Manual for DIN/ISO Programming | 5/2013
Interrupt machining
There are several ways to interrupt a program run:
Programmed interruptions
Pressing the machine STOP button
Switching to Program Run, Single Block
If the TNC registers an error during program run, it automatically
interrupts the machining process.
Programmed interruptions
You can program interruptions directly in the part program. The
TNC interrupts the program run at a block containing one of the
following entries:
G38 (with and without miscellaneous function)
Miscellaneous function
M0, M2 or M30
Miscellaneous function
M6 (determined by the machine tool
builder)
Interruption through the machine STOP button
Press the machine STOP button: The block that the TNC is
currently executing is not completed. The NC stop signal in the
status display blinks (see table)
If you do not wish to continue the machining process, you can
reset the TNC with the INTERNAL STOP soft key. The NC stop
signal in the status display goes out. In this case, the program
must be restarted from the program beginning
Icon Meaning
Program run is stopped
Interruption of machining by switching to the Program Run,
Single Block mode of operation.
You can interrupt a program that is being run in the Program Run,
Full Sequence mode of operation by switching to the Program Run,
Single Block mode. The TNC interrupts the machining process at
the end of the current block.