HEIDENHAIN TNC 426 (280 476) - Manual (Page 437)

410 11 Test run and Program Run
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Moving the machine axes during an interruption
You can move the machine axes during an interruption in the same
way as in the Manual Operation mode.
Example application:
Retracting the spindle after tool breakage
7 7 7 7 Interrupting machining
7 7 7 7 Enable the external direction keys: Press the MANUAL OPERATION
soft key.
7 7 7 7 Move the axes with the machine axis direction buttons.
Danger of collision
If you interrupt program run while the working plane is
tilted, you can change from a tilted to a non-tilted
coordinate system, and vice versa, by pressing the 3-D
ON/OFF soft key.
The functions of the axis direction buttons, the electronic
handwheel and the positioning logic for return to contour
are then evaluated by the TNC. When retracting the tool
make sure the correct coordinate system is active and the
angular values of the tilt axes are entered in the 3-D ROT
menu.
On some machines you may have to press the machine
START button after the MANUAL OPERATION soft key to
enable the axis direction buttons. Refer to your machine
manual.