Siemens SIMATIC HMI IPC677C - Device with Key Panel; Safety

Operation
9.2 Device with key panel
SIMATIC HMI IPC677C
98 Operating Instructions, 04/2013, A5E02722710-04
9.2 Device with key panel
9.2.1 Safety
Note
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
A
ctivating a key using a hard or pointed object, for example a screwdriver, reduces the life of
the key or can damage it.