Modbus Register Table (V. 7258)

MSD Series IAQ Monitor

 

 Tongdy Sensing Technology Corp.

 

Mode:    RTU  (MSB First) 

Baud Rate:  1-4800   2-9600    3-14400   4-19200  5-38400  6-56000  7-57600  8-115200      

                     default: 2-9600bps

Start Bits:   1

Data Bits:   8

Stop Bits:   1  /  2                                                                      default : 1

Parity:      None  / Odd  / Even                                                        default:  None

 

Register  Map

Support   Function:   3   4    6   16

Starting Register Decimal

Data Description

Function

Read/Write

Data Length

Format

Decimals

Data Range

Data Description

Default

0/1050

PM2.5 an hourly average measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

2/1052

PM10 an hourly average measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

4/1054

Temperature an hourly average measurements

4

R

2

Float-Big Endian

2

-20.00~60.00

 

6/1056

Humidity an hourly average measurements

4

R

2

Float-Big Endian

2

0~100.00% RH

 

8/1058

COan hourly average measurements

4

R

2

Float-Big Endian

0

05,000ppm

 

10/1060

TVOC an hourly average measurements

4

R

2

Float-Big Endian

3

0~ 3.575mg/

 

1062

CO an hourly average measurements

4

R

2

Float-Big Endian

1

0~ 500.0ppm

 

1064

HCHO an hourly average measurements

4

R

2

Float-Big Endian

3

0~ 2.89mg/m³ @-20

 

1066

O3 an hourly average measurements

4

R

2

Float-Big Endian

0

0~11561ug/m³ @-20

 

 

12/1000

PM2.5 one minute average measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

14/1002

PM10 one minute average measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

16/1004

Temperature real-time 

measurements

4

R

2

Float-Big Endian

2

-20.00~60.00

 

18/1006

Humidity real-time 

measurements

4

R

2

Float-Big Endian

2

0~100.00% RH

 

20/1008

CO2 real-time measurements

4

R

2

Float-Big Endian

0

05,000ppm

 

22/1010

TVOC real-time measurements

4

R

2

Float-Big Endian

3

0– 3.575mg/

 

1012

CO real-time measurements

4

R

2

Float-Big Endian

1

0– 500.0ppm

 

1014

HCHO real-time measurements

4

R

2

Float-Big Endian

3

0– 2.89mg/m³ @-20

 

1016

O3 one minute moving average 

measurements

4

R

2

Float-Big Endian

0

0– 11561ug/m³ @-20

 

 

24/1100

PM2.5 24-hour moving average 

measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

26/1102

PM10 24-hour moving average 

measurements

4

R

2

Float-Big Endian

1

0~1000.0μg∕m³

 

28/1104

Temperature 24-hour moving 

average measurements

4

R

2

Float-Big Endian

2

-20.00~60.00

 

30/1106

Humidity 24-hour moving 

average measurements

4

R

2

Float-Big Endian

2

0~100.00% RH

 

32/1108

CO2 24-hour moving average 

measurements

4

R

2

Float-Big Endian

0

05,000ppm

 

34/1110

TVOC 8-hour moving average 

measurements

4

R

2

Float-Big Endian

3

0– 3.575mg/

 

1112

CO 24-hour moving average 

measurements

4

R

2

Float-Big Endian

1

0– 500.0ppm

 

1114

HCHO 24-hour moving average 

measurements

4

R

2

Float-Big Endian

3

0– 2.89mg/m³ @-20

 

1116

O3 24-hour moving average 

measurements

4

R

2

Float-Big Endian

0

0– 11561ug/m³ @-20

 

 

1300

Primary pollutant 24-hour average measuring valueOne of PM2.5/PM10/CO2/TVOC

/CO/HCHO/O3)(Calculated based on 24-hour or 1-hour moving average measurements

4

R

2

Float-Big Endian

 

 

 

1302

Primary pollutant typeOne of 

PM2.5/PM10/CO2/TVOC/CO/

HCHO/O3)(Calculated based 

on 24-hour or 1-hour moving 

average measurements

4

R

1

INT16

 

1-PM25, 2-PM10, 3-CO2; 4-TVOC,     5-CO,

6-HCHO,  7-O3

 

1303

Index level of the primary pollutantOne of PM2.5/PM10

/CO2/TVOC/CO/HCHO/O3  Calculated based on 24-hour 

or 1-hour moving average 

measurements

4

R

1

INT16

 

Level 1-Excellent

Level 2-Good 

Level 3-Light pollution

Level4-Medium pollution

Level 5-Heavy pollution

Level 6-Severe pollution

 

1304

AQI value of the primary pollutantOne of PM2.5/PM10/

CO2/TVOC/CO/HCHO/O3  Calculated based on 24-hour 

or 1-hour moving average 

measurements

4

R

1

INT16

 

0~500

 

 

1320

PM2.5 AQI value

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1321

PM10 AQI value

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1322

CO2 AQI value

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1323

TVOC AQI value

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1324

CO AQI value

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1325

HCHO AQI value

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

1326

O3 AQI value

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

0~500

 

 

1350

PM2.5 Pollution index level

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1351

PM10 Pollution index level

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1352

CO2 Pollution index level

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1353

TVOC Pollution index level

Calculated based on 24-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1354

CO Pollution index level

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1355

HCHO Pollution index level

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

1356

O3 Pollution index level

Calculated based on 1-hour 

moving average measurements

4

R

1

INT16

 

1~6

 

 

78

3 color LED status

4

R

1

INT16

 

0-OFF, 1-Green, 

2-Yellow, 3-Red

 

0

Modbus Address

3/6

R/W

1

UINT16

 

1~247

1

1

Modbus ratebps

 

3/6

R/W

1

UINT16

 

1-4800,  2-9600,   3-14400, 4-19200,  5-38400,     6-56000, 7-57600,  8-115200

2

2

Modbus Parity check bit 

3/6

R/W

1

UINT16

 

1-NONE, 1STOP_BIT,

2-NONE, 2STOP_BIT, 

3-Odd,   1STOP_BIT,

4-Even,  1STOP_BIT

1

4

Temperature correction value

3/16

R/W

2

Float-Big Endian

2

-3.0~3.0/-6.0~6.0F

-2.0

6

Humidity correction value

3/16

R/W

2

Float-Big Endian

2

-5.0~5.0%RH

0

14

CO2 compensation value

3/16

R/W

2

Float-Big Endian

0

-300.0~300.0ppm

0

In order to reserve the decimal part, the measuring value with decimal will be magnified 10/100/1000 times, marked as x10/x100/x1000.

Starting Register Decimal

Data Description

Function

Read/Write

Data Length

Format

Decimals

Data Range

Data Description

Default

50/1175

PM2.5  an hourly average measurements  x10

4

R

1

UINT16

1

0~10000 corresponding to 0~1000.0μg∕m³

 

51/1176

PM10 an hourly average measurements  x10

4

R

1

UINT16

1

0~10000 corresponding to  0~1000.0μg∕m³

 

52/1177

Temperature an hourly average measurements  x100

4

R

1

INT16

2

-2000~6000 corresponding to -20.00~60.00

 

53/1178

Humidity an hourly average measurements  x100

4

R

1

UINT16

2

0~10000 corresponding to 0~100.00% RH

 

54/1179

CO2 an hourly average measurements x1

4

R

1

UINT16

0

0~5000 corresponding to  05,000ppm

 

55/1180

TVOC an hourly average measurements x1000

4

R

1

UINT16

3

0~3575 corresponding to  ~ 3.575mg∕m³

 

56/1150

PM2.5 one minute average measurements x10

4

R

1

UINT16

1

0~10000 corresponding to  0~1000.0μg∕m³

 

57/1151

PM10 one minute average measurements x10

4

R

1

UINT16

1

0~10000 corresponding to  0~1000.0μg∕m³

 

58/1152

Temperature real-time measurements x100

4

R

1

INT16

2

-2000~6000 corresponding to -20.00~60.00

 

59/1153

Humidity real-time measurements x100

4

R

1

UINT16

2

0~10000 corresponding to  0~100.00% RH

 

60/1154

CO2 real-time measurements x1

4

R

1

UINT16

0

0~5000 corresponding to  0~5,000ppm

 

61/1155

TVOC real-time measurements x1000

4

R

1

UINT16

3

0~3575 corresponding to  ~ 3.575mg∕m³

 

62/1200

PM2.5 24-hour moving average 

measurements x10

4

R

1

UINT16

1

0~10000 corresponding to  0~1000.0μg∕m³

 

63/1201

PM10 24-hour moving average 

measurements x10

4

R

1

UINT16

1

0~10000 corresponding to  0~1000.0μg∕m³

 

64/1202

Temperature 24-hour moving average measurements x100

4

R

1

INT16

2

-2000~6000 corresponding to -20.00~60.00

 

65/1203

Humidity 24-hour moving average measurements x100

4

R

1

UINT16

2

0~10000 corresponding to  0~100.00% RH

 

66/1204

CO2 24-hour moving average 

measurements x1

4

R

1

UINT16

0

0~5000 corresponding to  05,000ppm

 

67/1205

TVOC 24-hour moving average measurements x1000

4

R

1

UINT16

3

0~3575 corresponding to  0~ 3.575mg∕m³