HEIDENHAIN TNC 320 (340 551-01) - Manual (Page 388)

388 11 Test Run and Program Run
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Interrupting machining
There are several ways to interrupt a program run:
„ Programmed interruptions
„ Pressing the machine STOP button
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:
„ STOP (with and without a miscellaneous function)
„ Miscellaneous function M0, M2 or M30
„
Miscellaneous function M6 (determined by the machine tool builder)
Interrupting the machining process with the machine STOP
button
8 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).
8 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.
Moving the machine axes during an interruption
You can move the machine axes during an interruption in the same
way as in the Manual Operation mode.
Application example:
Retracting the spindle after tool breakage
8 Interrupt machining.
8 Enable the external direction keys: Press the MANUAL OPERATION
soft key.
8 Move the axes with the machine axis direction buttons.
Symbol Meaning
Program run stopped.
On some machines you may have to press the machine
START button after the MANUAL OPERATION soft key to
enable the axis direction buttons. Refer to your machine
manual.