HEIDENHAIN TNC 620 (340 56x-01) - Manual (Page 456)

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11.1 Graphics (Advanced Graphic
Features Software Option)
Function
In the program run modes of operation as well as in the Test Run
mode, the TNC provides the following three display modes: Using soft
keys, select whether you desire:
„ Plan view
„ Projection in three planes
„ 3-D view
The TNC graphic depicts the workpiece as if it were being machined
with a cylindrical end mill. If a tool table is active, you can also simulate
the machining operation with a spherical cutter. For this purpose,
enter R2 = R in the tool table.
The TNC will not show a graphic if
„ the current program has no valid blank form definition
„ no program is selected
„ the advanced graphic features software option is not active
A graphic simulation is only possible under certain
conditions for program sections or programs in which
rotary axis movements are defined. The graphic may not
be displayed correctly.