Siemens SINUMERIK 840D sl Operating Manual page 521

Procedure
Milling
Operating Manual, 03/2013, 6FC5398-7CP40-3BA1
1. Select the "Machine" operating area.
2. Select the "JOG", "MDI" or "AUTO" mode.
3. Press the menu forward key and the "Settings" softkey.
4. Press the "Collision avoidance" softkey.
The "Collision Avoidance" window opens.
5. In the "Collision avoidance" line for the required operating modes (e.g.
for JOG/MDI), select the entry "On" to activate the collision avoidance
or "Off" to deactivate collision avoidance.
6. Deactivate the "Tools" checkbox if you only want to monitor the
machine protection areas.
Collision avoidance (only 840D sl)
10.2 Switching the collision avoidance on and off
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