HEIDENHAIN TNC 406 - Manual (Page 245)

224 11 Test run and Program Run
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n Interrupting or aborting a program by pressing a button
The block which the TNC is currently executing is not completed.
Interrupt program run.
The symbol in the status display blinks.
Once you have pressed the Hand soft key, the axes can be traversed
manually using the axis-direction keys. To approach the point of
interruption once again, use the ”Return to contour” function (see
”Resuming program run after an interruption” on page 225).
Program run can be aborted with the machine STOP button.
Abort program run.
The symbol in the status display goes out.
Interruption of machining by switching to the PROGRAM RUN,
SINGLE BLOCK mode of operation
The machining process is interrupted at the end of the current block.
Select PROGRAM RUN, SINGLE BLOCK.
Mid-program startup (block scan)
If you want to start the program not at the first block but at some other
block:
8 Test the program in the operating mode TEST RUN up to the desired
block.
8 Switch to the program mode PROGRAM RUN.
8 Start the program at the current block.
The TNC moves the axes towards the contour in a pre-determined
sequence (positioning logic). While the TNC is moving the axes, a
message is displayed indicating that reapproach is active. You can
switch back and forth between the operating modes TEST RUN and
PROGRAM RUN as often as desired.