Operation
10.3 Device with key panel
SIMATIC Panel PC 677B
82 Operating Instructions, 05/2007, A5E01035609-01
Warning
The On/Off switch does not disconnect the device from supply voltage.
10.3 Device with key panel
10.3.1 Safety
Notice
Maloperation
If you activate several keys simultaneously, a malfunction on the device cannot be
excluded. Activate function keys and softkeys only in sequence!
Malfunctions of the user software
For security reasons, always use "Security features" of the KeyTools. If you deactivate it
nevertheless, serious malfunctions of the user software may occur when the additional
function keys and softkeys F13 to S16 are used or if own key code tables are used.
Risk of damage
Activating a key using a hard or pointed object, for example a screwdriver, reduces the life
of the key or can damage it.
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