iSMA-B-LP Room Panel/Modbus
version 1.3
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5.3.3
CO
2
_FILTER (40309)
Register contains time constant for CO
2
sensor low pass filter, in seconds. The value is
expressed in seconds. The default filter value is 60 seconds. Setting value 0 disables the
filter.
5.3.4
CO
2
_NAME (40314)
There is one 32-bit register which can contain up to 4 characters (ASCII code), which can be
displayed as a text (name) on 14 segment display block together with the
CO2_SENSOR_ACTUAL_VALUE register (displayed on 8-segment display block). In case
when a particular character value is 0 (NULL), the character is not displayed. Lower case
characters are automatically changed into upper case characters. The default value is
838878031 which corresponds
to the name “CO
2
”.
5.3.5
CO
2
_CONFIGURATION (40318, bit 0)
Bit 0 of register 40318 is responsible for activation or deactivation of the visibility of CO
2
sensor. If bit 0 is active, CO
2
sensor
’s
actual value is visible in Main Menu. Default value is
“true”
(visible, WARNING! CO
2
value is visible with delay of 120 sec after the Room Panel
restart or power supply connection).
5.3.6
CO
2
_SETPOINT_FOR_ALARM (40226)
The register contains the Setpoint for alarm value in ppm. If actual CO
2
sensor value
increases over the Setpoint value, then the Room Panel indicates CO
2
Alarm (for other
indication possibilities see Device Configuration). Default value is 1500 ppm.
5.3.7
CO2_DIFFERENTIAL_FOR_ALARM (40227)
The register contains value in ppm which is the differential for CO
2
Alarm value. CO
2
Alarm is
activated when CO
2
actual sensor value is higher or equal to the sum of
CO2_SETPOINT_FOR_ALARM register value and CO
2
differential for Alarm value. CO
2
Alarm
is inactive when CO
2
actual sensor value is lower or equal to the difference of
CO2_SETPOINT_FOR_ALARM register value and CO
2
differential for Alarm value. Default
value is 100 ppm.
CO
2
Alarm ON:
CO
2
sensor actual value >= CO2 Setpointfo CO2 differential for Alarm
CO
2
Alarm OFF:
CO
2
sensor actual value <= CO2 SetpointforAlarm - CO2 differential for Alarm