Resuming Program Run After An Interruption - HEIDENHAIN TNC 620 User Manual

Testing and running | Program run

Resuming program run after an interruption

The control saves the following data during a program interruption:
The last tool that was called
Current coordinate transformations (e.g., datum shift, rotation,
mirroring)
The coordinates of the circle center that was last defined
The control uses the stored data for returning the tool to
the contour after manual machine axis positioning during an
interruption (RESTORE POSITION soft key).
Operating notes:
The saved data remains active until it is reset (e.g.,
by selecting a program).
If you interrupt an NC program using the
INTERNAL STOP soft key, you have to start
machining at the start of the program or by using the
BLOCK SCAN function.
For program interruptions within program-section
repeats or subprograms, you have to use the
BLOCK SCAN function for re-entering at the point of
interruption.
With machining cycles, mid-program startup is
always executed at the start of the cycle. If you
interrupt a program run during a machining cycle, the
control repeats machining steps already carried out
after a block scan.
Resuming the program run with the NC Start key
You can resume program run by pressing the NC start key if the
NC program was stopped in one of the following ways:
Press the NC Stop key
Programmed interruption
Resuming program run after an error
With an erasable error message:
Remove the cause of the error
Clear the error message from the screen: Press the CE key
Restart the program, or resume program run where it was
interrupted
HEIDENHAIN | TNC 620 | User's Manual for Setup, Testing and Running NC Programs | 10/2018
6
265