User Manual

Configurations
Modbus registers
4
8 | 16 A6V11610643_en--_a
NOTES:
● Register 764 (Modbus address) cannot be configured as 246 via a master.
Address 246 is reserved for on-event addressing.
● Bus configuration command (768) is for on-event addressing only.
4.3 Modbus registers
Holding
Register
(16-bit)
No.
Description Range Unit Scaling Default R/W
1 Temperature value -327…327 °C
-556.6…620.6 °F
°C
°F
0.01 - R
2
Temperature
reliability
0 – No error
1 – Bad reliability,
unavailable
- - - R
3
Relative humidity
value
0…100 % % 0.01 - R
4 Humidity reliability 0 – No error
1 – Bad reliability,
unavailable
- - - R
5 CO
2
value 0…2000 ppm ppm - - R
6 CO
2
reliability 0 – No error
1 – Bad reliability,
unavailable
- - - R
7 IAQ value 0…100 % % 0.01 - R
8 IAQ reliability 0 – No error
1 – Bad reliability,
unavailable
- - - R
212 VOC sensitive 0 – Slow
1 – Medium
2 - Fast
- - 1 RW
401 System unit 0 – Celsius
1 – Fahrenheit
others - invalid
value to be
discard
- - 0 RW
1286
SW version: Major &
Minor versions
- - - - R
1287
SW version: Build
version
- - - - R
764 Modbus address 1…247 - - 1 RW