Siemens SIMATIC PANEL PC 877 - Manual (Page 97)

Operation
10.3 Device with key panel
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
10-9
External keyboards
The keyboard layout has been set to "English/USA international." If you use a keyboard with
a layout other than the "English/USA international" layout, the key codes of the internal and
external keyboards might no longer correspond.
Notice
Maloperation
If you activate several keys simultaneously, a malfunction on the device cannot be excluded.
Activate function keys and softkeys only in sequence!
Notice
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.
Notice
Risk of damage
Activating a key using a hard or pointed object, e.g. a screwdriver, reduces the life of the key
or can damage it.