HEIDENHAIN TNC 620 User Manual page 589

16.8 Optional program-run interruption
Application
Refer to your machine manual.
The behavior of this function varies depending on the
respective machine.
The TNC optionally interrupts program run at blocks containing M1.
If you use M1 in the Program run mode, the TNC does not switch
off the spindle or coolant.
Do not interrupt Program run or Test run with
blocks containing M1: Set the soft key to OFF
Interrupt Program run or Test run with blocks
containing M1: Set the soft key to ON
HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
Optional program-run interruption 16.8
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