Screen Saver; Screen Brightness - HORNER APG XL10 PRIME OCS User Manual

MAN1029-10-EN_EXL10_XL10P_UM

14.10 Screen Saver

The EXL10/XL10 PRIME screen backlight life is typically five (5) years when in continuous use. If the
application does not require interaction with the EXL10/XL10 PRIME for long periods of time, the
backlight life can be extended by using the screen saver function. When enabled through the System
Menu, the backlight is shut off (screen goes black) after a specified time of no touch activity on the
screen. When the screen saver shuts off the backlight, any operator touch on the screen or function
keys reactivates the backlight.
NOTE: When the screen saver is active (backlight shut off), any initial touch activity on the screen (or
function key) to reactivate the backlight is otherwise ignored by the EXL10/XL10 PRIME. Any additional
touch activity is also ignored by the EXL10/XL10 PRIME for approximately one second thereafter.
It is possible for the application to temporarily disable the screen saver by generating a positive
transition to %SR57.16 (coil only) at a rate faster than the screen saver timeout value. This may be
desired while waiting for alarm acknowledgement.

14.11 Screen Brightness

The EXL10/XL10 PRIME provides a feature that allows screen dimming for night operation. To enable
this feature, the application must access and control system register %SR57 (Display Backlight
Brightness). Screen brightness is continuously variable by driving %SR57 through the range of 100 (full
bright) to 0 (full off). It is left to the screen designer on how to present a Screen Brightness control to the
user, if required.
NOTE: The backlight life can be extended by dimming or powering off the backlight.
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