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6.1. Backlight Control
The backlight can be controlled using the following methods.
• Control by pressing the backlight function control key
• Control using the backlight control property
The backlight function can be enabled/disabled by pressing the backlight function control key (Default: Hold down
[SF] key and press [M4].).
With the backlight function enabled, press any key or tap the touch panel to turn the backlight ON.
If a key is not pressed or the touch panel is not tapped within the backlight illumination duration, the backlight
function remains enabled, however the backlight itself will turn OFF or dim.
The backlight illumination status can be controlled by entering a value at the Backlight.Status property, regardless
of whether it is currently disabled or disabled. Furthermore, the illumination status can be acquired by reading the
property value.
Press backlight function control key,
or
Status = ENABLE_ON
Status = ENABLE_OFF
Press key other than backlight
function control key or tap
Status = ENABLE_ON
Enabled, OFF/DIM
touch panel,
or
Disabled
Press backlight function control key,
[Default Status]
Illumination duration elapses
since key last pressed or touch
Status = ENABLE_OFF
Enabled, ON
- 13 -
or
Status = DISABLE_OFF
panel tapped,
or
Press backlight function control key,
or
Status = DISABLE_OFF
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