HEIDENHAIN TNC 426 B User Manual page 302

The graphic simulation must first have been stopped. A detail
magnification is always effective in all display modes.
Shift the soft-key row in the Test Run mode of operation until the
following soft keys appear:
Function
Select the left/right workpiece surface
Select the front/back workpiece surface
Select the top/bottom workpiece surface
Shift the sectional plane to reduce or
magnify the blank form
Select the isolated detail
To change the detail magnification:
The soft keys are listed in the table above.
Interrupt the graphic simulation, if necessary.
Select the workpiece surface with the corresponding
soft key (see table).
To reduce or magnify the blank form, press and hold
the minus or plus soft key, respectively.
To select the isolated detail, press the TRANSFER
DETAIL soft key.
Restart the test run or program run by pressing the
START soft key (RESET + START returns the workpiece
blank to its original state).
Cursor position during detail magnification
During detail magnification, the TNC displays the coordinates of the
axis that is currently being isolated. The coordinates describe the
area determined for magnification. To the left of the slash is the
smallest coordinate of the detail (MIN point), to the left is the
largest (MAX point).
If a graphic display is magnified, this is indicates with MAGN at the
lower right of the graphics window.
If the workpiece blank cannot be further enlarged or reduced, the
TNC displays an error message in the graphics window. To clear the
error message, enlarge or reduce the workpiece blank.
HEIDENHAIN TNC 426 B, TNC 430
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Soft keys
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