HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 510)

Test run and program run
16.1 Graphics (option 20)
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TNC 620 | User's ManualDIN/ISO Programming | 2/2015
Repeating graphic simulation
A part program can be graphically simulated as often as desired. To
do so you can reset the graphic to the workpiece blank.
Soft key Function
Show the unmachined workpiece blank
Tool display
Regardless of the operating mode, you can also show the tool
during the simulation.
Soft key Function
Program Run, Full Sequence / Program Run,
Single Block
Test Run