HEIDENHAIN TNC 640 (34059x-05) ISO programming - Manual (Page 379)

Dynamic Collision Monitoring (Option #40) 11.2
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TNC 640 | User's ManualDIN/ISO Programming | 1/2015
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You can also use the mouse to change the display of the collision
objects.
The following functions are available:
In order to rotate the model shown in three dimensions you
hold the right mouse button down and move the mouse. If
you simultaneously press the shift key, you can only rotate the
model horizontally or vertically.
To shift the model shown: Hold the center mouse button or the
wheel button down and move the mouse. If you simultaneously
press the shift key, you can only shift the model horizontally or
vertically.
To zoom in on a certain area: Mark a zoom area by holding
the left mouse button down. After you release the left mouse
button, the TNC zooms in on the defined area.
To rapidly magnify or reduce any area: Rotate the mouse wheel
backwards or forwards.
To return to the standard display: Press the shift key and
simultaneously double-click with the right mouse key. The
rotation angle is maintained if you only double-click with the
right mouse key.