HEIDENHAIN TNC 426 B User Manual page 300

Limitations during program run
A graphical representation of a running program is not possible if
the microprocessor of the TNC is already occupied with
complicated machining tasks or if large areas are being machined.
Example: Multipass milling over the entire blank form with a large
tool. The TNC interrupts the graphics and displays the text ERROR
in the graphics window. The machining process is continued,
however.
Plan view
Press the soft key for plan view.
Select the number of depth levels (after shifting the
soft-key row). You can choose between 16 or 32
shades of depth.
The deeper the surface, the darker the shade.
Plan view is the fastest of the three graphic display
modes.
Projection in 3 planes
Similar to a workpiece drawing, the part is displayed with a plan
view and two sectional planes. A symbol to the lower left indicates
whether the display is in first angle or third angle projection
according to ISO 6433 (selected with MP7310).
Details can be isolated in this display mode for magnification (see
"Magnifying details").
In addition, you can shift the sectional planes with the
corresponding soft keys:
Press the soft key for projection in three planes.
Shift the soft-key row until the TNC displays the
following soft keys:
Function
Shift the vertical sectional plane
to the right or left
Shift the horizontal sectional plane
upwards or downwards
The positions of the sectional planes are visible during shifting.
Coordinates of the line of intersection
At the bottom of the graphics window, the TNC displays the
coordinates of the line of intersection, referenced to the workpiece
datum. Only the coordinates of the working plane are shown. This
function is activated with machine parameter 7310.
HEIDENHAIN TNC 426 B, TNC 430
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Soft keys
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