Siemens SINUMERIK 840D sl Operating Manual page 52

Introduction
1.4 User interface
Diagnostics operating area
Startup operating area
52
Protection level
Keyswitch 3
(protection level 4)
End user
(protection level 3)
End user
(protection level 3)
Manufacturer
(protection level 1)
End user
(protection level 3)
Service
(protection level 2)
Protection levels
End user
(protection level 3)
Keyswitch 3
(protection level 4)
Keyswitch 3
(protection level 4)
Key switch 3
(protection level 4)
Keyswitch 3
(protection level 4)
Service
(protection level 2)
End user
(protection level 3)
End user
(protection level 3)
Operating Manual, 09/2011, 6FC5398-7CP40-2BA0
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