Detailed Description
2.1 NC/PLC interface signals
Various NC/PLC Interface Signals and Functions (A2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
2-5
2.1.5 Signals to/from panel front
DB19, DBX0.0 (operator panel inhibit)
All inputs via operator components on the operator panel front are inhibited.
DB19, DBX0.1 (darken screen)
The operator panel screen is darkened or lightened.
If the interface signal is used to actively darken the screen:
• It is no longer possible to switch the screen bright again on the keyboard (see below).
• The first keystroke on the operator panel already triggers an operator action.
Note
In order to prevent accidental operator actions when the screen is darkened via the
interface signal, we recommend disabling the keyboard at the same time.
DB19, DBX0.1 = 1 AND DB19, DBX0.2 = 1 (key disable)
Screen darkening via keyboard/automatic screen saver
If no buttons are pressed on the operator panel front within the assigned time (default = 3
minutes):
MD9006 $MM_DISPLAY_BLACK_TIME
(time for screen darkening), the screen is automatically darkened.
The screen lights up again the first time a button is pressed following darkening. Pressing a
button to lighten the screen will not generate an operator action.
Parameterization
• DB19, DBX0.1 = 0
• MD9006 $MM_DISPLAY_BLACK_TIME > 0
DB19, DBX0.2 (key disable)
All inputs via the connected keyboard are inhibited.
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