HEIDENHAIN TNC 640 (34059x-01) ISO programming - Manual (Page 427)

HEIDENHAIN TNC 640 427
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n Interrupting 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 functions M0, M2 or M30
„ Miscellaneous function M6 (defined by the machine tool builder)
Interruption through the machine STOP button
U 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)
U 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
Interrupting the machining process 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.
Symbol Meaning
Program run is stopped