iSMA-B-LP Room Panel/Modbus
version 1.3
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4.9.4
Key Pad Background Illumination Settings
When one of four keypad buttons is pressed, the Room Panel changes state into Active
mode. The same situation happens when the power supply is reconnected or after the Room
Panel restart. In case when there is no keypad activity and the Room Panel stays ON, the
subsequent Background illumination modes activate. Key Pad illuminates only when the
value of the register bit DEVICE_CONFIGURATION bit 4 is
“true”
. If not, Key Pad is never
illuminated.
Particular modes activate sequentially one after another according to the following
sequence:
4.
Active
–
the mode activates after pushing any keypad button or after the Room Panel
restart.
Key
Pad
illuminates
with
a
brightness
level
stored
in
BACKGROUND_ILLUMINATION_KEY_PAD_FOR_ACTIVE_MODE register. In default
setting, the value of Illumination for the active mode is 10%. It means that the LCD
display illuminates with 10% of the maximum possible brightness. The Key Pad stays in
Active
mode
for
as
long
as
it
is
determined
in
BACKGROUND_ILLUMINATION_KEY_PAD_TIME_TO_IDLE register. The register contains
time value in seconds (iBy default 10 sec) and a time countdown starts when Active
mode becomes active. It means in practice that pressing any of the keypad buttons
resets a timer and countdown starts again.
5.
Idle
–
the mode becomes active always after Active mode (Time to Idle is up). The Key
Pad illuminates with a brightness stored in
BACKGROUND_ILLUMINATION_KEY_PAD_FOR_IDLE_MODE register (in default 40%).
The Key Pad stays in Idle mode during the time value stored in
BACKGROUND_ILLUMINATION_KEY_PAD_TIME_TO_STANDBY register (in default 5 sec).
6.
Standby
–
the mode becomes active always after Idle mode (Time to Standby is up). The
Key Pad illuminates with a brightness level stored in
BACKGROUND_ILLUMINATION_KEY_PAD_FOR_STANDBY_MODE register (in default
60%). The Key Pad stays in Standby mode for as long as Active mode is not initiated.
Actual Key Pad display brightness level value is stored in
BACKGROUND_ILUMINATION_KEY_PAD_CURRENT_VALUE register.