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6-9SectionSystem Settings
177
6-9-8 Setting the Screen Saver Start-up Time
The NT31/NT31C has a function to maximize the service life of the backlight and
prevent the formation of an afterimage by turning off the screen display and the
backlight if no operation is performed for a certain period of time.
The Screen Saver Start up Time setting determines the time interval before the
screen saver function operates.
The setting range is 0 to 255 minutes. The default (factory) setting is 10 minutes.
If 000 is set, the screen saver function does not operate.
The screen saver can be canceled, and previous screen redisplayed, by any of
the following operations.
• Touching any part of the touch panel
• Screen switching due to PT status control area operations
• Screen switching due to bit memory table operations
• Execution of any of the following PT status control bit operations:
• Changing the backlight mode
• Screen printing (change from OFF to ON)
• Screen display (change from OFF to ON)
Reference: S It is possible to display the character string stored in character string memory
table No. 0 at random positions and in random colors while the screen display
is off. For details, refer to 6-9-7 Setting Screen Saver Movement (page 175).
Note however that, when this feature is used, the backlight does not go off.
S For details on the screen saver function, refer to 2-15-4 Screen Saver Function
in the Reference Manual.
S Screen saver function is enabled only through RUN mode of NT31/NT31C. In
System Menu or System Installer mode, this function is not started.