Blanking The Screen - Siemens SIMATIC HMI TP27 Equipment Manual

11.2

Blanking the Screen

Purpose The brightness of the LCD back–lighting is reduced during the course of time
due to technological reasons. To extend its useful life:
Action
TP27, TP37 Equipment Manual
Release 01/00
reduce the brightness of the back–lighting on the TP27,
switch off the back–lighting on the TP37.
Trigger using the standard screen
Touch the button depicted on the right of the System Settings
standard screen. This blanks the screen.
As soon as you touch any part of the screen of the TP27, the
back–lighting returns to full brightness; if you are using TP37
touching the screen switches on the back–lighting.
Automatic triggering
If you do not touch the Touch Panel's screen within a configured period of
time, the screen is blanked automatically. As soon as you touch any part of
the screen of the TP27, the back–lighting returns to full brightness; if you
are using a TP37 touching the screen switches on the back–lighting.
The screen of the Touch Panel is only blanked automatically if this function
has been configured in ProTool.
System Settings
11-5