HEIDENHAIN TNC 620 User Manual page 563

Interrupt machining
There are several ways to interrupt a program run:
Program-controlled interruptions
Manual interruption
The control shows the current status of the program run in the
status display:
Icon Meaning
Program run has started
Program has been interrupted
Program run is stopped
The difference between an interrupted program run and a stopped
run is that an interrupted run allows the user to carry out the
following actions:
Select operating mode
Change Q parameters using the Q INFO function
Change setting for the optional programmed interruption with
M1
Change setting for the programmed skipping of NC blocks with
/
The miscellaneous functions M2 and M30 plus
functions NC STOP and INTERNAL STOP do not
suspend the program run, they stop it altogether.
If the control registers an error during a program run,
it automatically stops the machining process.
Program-controlled interruptions
You can define interruptions directly in the machining program. The
control interrupts the program run in the NC Block containing one
of the following inputs:
Programmed stop STOP (with and without miscellaneous
function)
Programmed stop M0
Conditional stop M1
The miscellaneous function M6 may also lead to
a suspension of the program run. The machine
manufacturer sets the functional scope of the
miscellaneous functions.
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
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