HEIDENHAIN TNC 426 B User Manual page 301

3-D view
The workpiece is displayed in three dimensions, and can be rotated
about the vertical axis.
The workpiece is displayed in three dimensions, and can be rotated
about the vertical axis. The shape of the workpiece blank can be
depicted by a frame overlay at the beginning of the graphic
simulation.
In the Test Run mode of operation you can isolate details for
magnification (see "Magnifying details").
Press the soft key for plan view.
To rotate the 3-D view
Shift the soft-key row until the following soft keys appear:
Function
Rotate the workpiece in 27° steps
about the vertical axis
Switch the frame overlay display for the workpiece blank on/off:
Show the frame overlay with SHOW BLK-FORM
Omit the frame overlay with OMIT BLK FORM
Magnifying details
You can magnify details in the Test Run mode of operation in the
following display modes, provided that the graphic simulation is
stopped:
Projection in three planes
3-D view
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Soft keys
11 Test Run and Program Run