Modbus registers - Basic Documentation - QFM9150/MO - QPM9152/MO

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

CO₂ value

0…2000 ppm

ppm

-

-

R

6

CO₂ 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

15

VOC value

0…100 %

%

0.01

-

R

16

VOC reliability

0 – No error

1 – Bad reliability, unavailable

-

-

-

R

212

VOC sensitive

0 – Slow

1 – Medium

2 - Fast

-

-

1

RW

223

Temperature offset

-100...100 °C

-180...180 °F

°C

°F

0.1

0

RW

224

Relative humidity offset

-100...100 %

%

0.1

0

RW

225

CO₂ offset

-2000...2000 ppm

ppm

1.0

0

RW

226

IAQ offset

-100...100 %

%

1.0

0

RW

227

VOC pure offset

-100...100 %

%

1.0

0

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

765

Baud rate

0 = Auto

1 = 9600bps

2 = 19200bps

3 = 38400bps

4 = 57600bps

5 = 76800bps

6 = 115200bps

-

-

0

RW

766

Transmission format (start bits-data bits-parity-stop bits)

0 = 1-8-E-1

1 = 1-8-O-1

2 = 1-8-N-1

3 = 1-8-N-2

-

-

0

RW

767

Reserve

-

-

-

-

RW

768

Bus configuration command

0 = Ready

1 = Load

2 = Discard

-

-

0

RW