Siemens SINUMERIK 840D sl Commissioning Manual page 170

Commissioning NC-controlled drives
6.6 Diagnostics → Trace
Alternative: Zoom using the mouse
Procedure:
1. While keeping the <CTRL> key pressed, using theleft-handmouse key, drag the section of
the screen that you wish to zoom into:
2. Zoom result after releasing the left-hand mouse key:
3. You can undo the action using <CTRL> and the right-hand mouse key.
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CNC Commissioning: NC, PLC, Drive
Commissioning Manual, 12/2019, A5E48312804B AA