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TNC 426/TNC 425/TNC 415 B/TNC 407
3
Test Run and Program Run
3-6
Y
e.g.
Moving machine axes during an interruption
You can move the machine axes during a program interruption in the same
way as in the MANUAL OPERATION mode. Simply enable the machine
axis direction buttons by pressing the MANUAL OPERATION soft key.
Danger of collision
If you interrupt program run while the working plane is tilted, you can change from a tilted to an untilted coordinate
system, and vice-versa, by pressing the 3D ON/OFF soft key. The functions of the axis direction buttons, the elec-
tronic 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 3D
ROT menu (see page 2-26).
Example: retracting the spindle after tool breakage
Interrupt machining.
Enable the machine axis direction buttons.
Move the axes with the machine axis direction buttons.
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 the operating manual of your machine tool for further information.
Resuming program run after an interruption
• If a program run is interrupted during a fixed cycle, the program must be resumed from the beginning of the cycle.
This means that some machining operations will be repeated.
• If a program run is interrupted during execution of a subprogram or a program section repeat, use the
RESTORE POS AT N function to return to the position at which the program run was interrupted.
When a program run is interrupted, the TNC stores:
• The data of the last tool called
• Active coordinate transformations
• The coordinates of the circle center that was last defined
The stored data are used for returning the tool to the contour after
manual machine axis positioning during an interruption (RESTORE
POSITION).
Resuming program run with the START button
You can resume program run by pressing the START button if the
program was interrupted in one of the following ways:
• The machine STOP button was pressed
• A programmed interruption