Modbus
Address
Decimal
Address
Hex Register Name Access Default
Value
Value
Range
Description
40020 19 0x13 PARITY_BIT Read/
write
0 0-2 Determines the parity
bit
40021 20 0x14 REPLY_DELAY Read/
write
0 Sets the delay time in
ms before sending
response
40023 22 0x16 ADDRESS Read/
write
1 Modbus address of the
device
40024 23 0x17 PROTOCOL Read/
write
0 0-2 Sets the type of Modbus
protocol (Modbus RTU
(0), Modbus ASCII (1))
30029 28 0x1C SENSORS Read-
only
Informs about built-in
sensors
30201 200 0xC8 BACKLIGHT_LCD Read-
only
Actual display
illumination value
30202 201 0xC9 BACKLIGHT_KEYPA
D
Read-
only
Actual keypad
illumination value
40205 204 0xCC DEVICE_CONFIGUR
ATION
Read/
write
105
Bit Name 0 1
0 BUZZER Not active Active
(def)
Activates/inactivates a
buzzer
3 BACKLIGHT_LCD Not active Active
(def)
Switches on/off display's
backlight
4 BACKLIGHT_KEYPA
D
Not active Active
(def)
Switches on/off keypad's
backlight
5 CO2_ALARM_LCD Not active Active Shows CO2 alarm on a
display
6 CO2_ALARM_BUZZ
ER
Not active Active Switches on/off CO2
alarm's buzzer on alarm
8 CO2_ALARM_CONFI
RM
Not active Active
(def)
Switches on/off CO2
alarm confirmation by
any button
11 PANEL_OFF Panel on (def) Panel
off
Switches on/off the
panel
12 KEYPAD_OFF Keypad on (def) Keypad
off
Switches on/off the
keypad