Screen Saver; Screen Brightness - HORNER APG EXL10 OCS User Manual

MAN1029-08-EN_EXL10_UserManual

14.10 Screen Saver

The EXL10 screen backlight life is typically five (5) years when in continuous use. If the application does
not require interaction with the EXL10 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. Any additional touch activity
is also ignored by the EXL10 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 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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