FJÖLNOTA LOFTGÆÐASKYNJAMÁL (MODBUS)
Notendahandbók fyrir SRAQ-D701
Vörulýsing
The SRAQ-D701 is a comprehensive air quality sensor module which combines CO², laser dust, temperature and humidity, TVOC and formaldehyde.
Developed for integration into air purifiers, air quality monitors and custom enclosures. The SRAQ-D701 provides real time concentration values via Modbus-RTU output. It offer good stability, and is well suited for applications where TVOC and particulate matter concentrations are a concern.
Eiginleikar
- Detects multiple pollutants CO2, dust etc.
- Modbus úttak
- High reliability and good stability
- High accuracy & fast response
- Fyrirferðarlítil hönnun til að auðvelda samþættingu
Umsóknir
- Office and commercial buildings
- Factory floors
- Rannsóknastofur
- HAVC industry
- General air quality monitoring
- Smart home systems
Thank you for choosing L-com product. To ensure safe, accurate performance and product longevity, please take a moment to familiarize yourself with this manual before powering the device. Please keep it handy for future reference. In case of any questions regarding the installation or use of product, please call us at 800.341.5266.
Hafðu samband við okkur kl customerservice@l-com.com og heimsækja okkar websíða kl www.l-com.com
This datasheet has been downloaded from http://www.digchip.com á þessu síðu
Tæknilegar breytur
Greiningarbreytur og upplausn: CO2 gildið og formaldehýð gildið sem mælt er með einingunni eru jafngild TVOC gildi, vinsamlegast athugið það þegar það er notað eða keypt.
| Mengandi efni | Mælingarupplausn | Mælisvið | Nákvæmni |
| eCO2 | 1 ppm | 400~5000 ppm | ± 100 ppm |
| PM2.5 | 0.3 ug/m3 | 0~1000 ug/m3 | ± 10% |
| PM10 | 0.3 ug/m3 | 0~1000 ug/m3 | ± 10% |
| Hitastig | 0.01 °C | 20 ~ 80 ° C | ± 0.5 °C |
| Raki | 0.04% | 5~100% RH | ± 3% RH |
| TVOC | 1 ug/m3 | 1230 ug/m3 | ± 90 ug/m3 |
| CH2O | 1 ug/m3 | 500 ug/m3 | ± 40 ug/m3 |
- Vinna voltage: 5 ± 0.2 VDC
- Working environment: Working temperature 0~50 °C, Working humidity: 15% RH 90% RH (no condensation)
- Working environment: Temperature range -20~60 °C, Humidity: 5% RH 95% RH (no condensation)
- Communication method: Modbus RTU RS485
- Preheating time: 10-15 minutes, the longer the power-on time, the more stable the data will be.
Uppsetningarmyndir
Festingartegund: Festing á borðplötu. Gatþvermál 2 mm, gatbil 11.5 mm.
Vírskilgreining
Tengitegundin er XH2.54 mm 4 pinna tengi, fest 90° lóðrétt á prentplötu.
| Sr. nr. | Virka | Skýringar | Litur |
| 1 | VCC | 12 – 24 VDC, power supply positive | Brúnn |
| 2 | GND | GND, neikvæð aflgjafa | Svartur |
| 3 | RS485_A+ | RS485_A+ | Grænn |
| 4 | RS485_B- | RS485_B- | Blár |
Samskiptabókun
The module hardware supports serial TTL communication interface and RS485 communication interface. When testing, users need to choose the corresponding communication method development according to the module interface type they have purchased.
RS485 Interface Communication Interface Related Protocol:
Serial port parameters: (9600/8/N/1) Mod Bus-RTU 485
The factory default address of the module is 0x01
Baud rate: 9600, Check bit: no, Stop position: 1 bit
Return data time: <300ms
The reading speed cannot exceed 350ms
Lestu skipunina „Lesa heimilisfang“
| Taka á móti | Lagað | Aðgerðarnúmer | Lagað | Lagað | Lagað | Lagað | CRC_L | CRC_H |
| FE | 17 | 00 | 00 | 00 | 01 | CRC athuga | ||
| Svaraðu | Lagað | Aðgerðarnúmer | Fjöldi bæta | Firmware útgáfa | Núverandi heimilisfang | CRC_L | CRC_H | – |
| FE | 17 | 02 | xx | yy | CRC athuga | – | ||
Til dæmisample: Send command: FE 17 00 00 00 01 A0 06 Return data: FE 17 02 11 01 64 30
Indicates that the device address is 01 and the version number is V1.1
Skipunin Breyta heimilisfangi
Sjálfgefið vistfang einingarinnar frá verksmiðju er 0x01 og hægt er að breyta vistfangssviðinu í: 0~254.
| Taka á móti | Núverandi heimilisfang | Aðgerðarnúmer | Lagað | Lagað | Frátekið | Sjálfgefið heimilisfang | CRC_L | CRC_H |
| yy | 06 | 00 | 00 | 00 | zz | CRC athuga | ||
| Svaraðu | Address Before Modification | Aðgerðarnúmer | Fjöldi bæta | Halda | Modified Address | CRC_L | CRC_H | – |
| yy | 06 | 02 | 00 | Zz | CRC athuga | – | ||
Til dæmisample: When the current address is 01, the preset address is: 02
Send command: 01 06 00 00 00 02 08 0B Return data: 01 06 02 00 02 39 49
Lestu gögn skipunina
| Taka á móti | Núverandi heimilisfang | Aðgerðarnúmer | Skrá upphafs heimilisfang | Fjöldi skynjara sem þarf til að lesa | CRC_L | CRC_H | ||
| yy | 03 | 00 | MM | 00 | NN | CRC athuga | ||
| Svaraðu | Núverandi heimilisfang | Aðgerðarnúmer | Gagnalengd | Skynjaragögn | CRC_L | CRC_H | – | |
| yy | 03 | NN*2 | xx xx ……xx xx | CRC athuga | – | |||
Note: The returned xx xx ……xx xx sensor data can be changed according to the register address and data length.
00 MM represents the register address of the sensor, and 00 NN is the data length.
| Register address（00 MM） | ||||||
| 00 00 | 00 01 | 00 02 | 00 03 | 00 04 | 00 05 | 00 06 |
| eCO2 | TVOC | CH2O | PM2.5 | Raki | Hitastig | PM10 |
Lýsing
- The minimum number of sensors 00 NN is 00 01, and the maximum is 00 07. When the MM value is 00, the maximum NN value can be 07. At this time, the value of all sensors can be read, and it can also be 01. When it is 01, only CO2 data can be read alone. And so on.
- The address at the front of the register can read the data of the following sensor when the data length is increased, but the address at the back of the register cannot read the data of the sensor before this address. See details below:
| 00 MM 00 NN | Umhverfisgögn sem hægt er að lesa |
| 00 00 00 01 | Indicates that CO2 data is read from the starting address 00 00 |
| 00 00 00 02 | Means to read CO2, TVOC data from the starting address 00 00 |
| 00 00 00 03 | Means to read CO2, TVOC, CH2O data from the starting address 00 00 |
| 00 00 00 04 | Means to read CO2, TVOC, CH2O, PM2.5 data from the starting address 00 00 |
| 00 00 00 05 | Means to read CO2, TVOC, CH2O, PM2.5, H data from the starting address 00 00 |
| 00 00 00 06 | Means to read CO2, TVOC, CH2O, PM2.5, H, T data from the starting address 00 00 |
| 00 00 00 07 | Means to read CO2, TVOC, CH2O, PM2.5, H, T, PM10 data from the starting address 00 00 |
| 00 01 00 01 | Indicates that the TVOC data is read from the starting address 00 01 |
| 00 01 00 02 | Indicates that TVOC and CH2O data are read from the starting address 00 01 |
| 00 01 00 03 | Means to read TVOC, CH2O, PM2.5 data from the starting address 00 01 |
| 00 01 00 04 | Means to read TVOC, CH2O, PM2.5, H data from the starting address 00 01 |
| 00 01 00 05 | Means to read TVOC, CH2O, PM2.5, H, T data from the starting address 00 01 |
| 00 01 00 06 | Means to read TVOC, CH2O, PM2.5, H, T, PM10 data from the starting address 00 01 |
| 00 02 00 01 | Indicates that CH2O data is read from the starting address 00 02 |
| 00 02 00 02 | Indicates that CH2O and PM2.5 data are read from the starting address 00 02 |
| 00 02 00 03 | Means to read CH2O, PM2.5, H data from the starting address 00 02 |
| 00 02 00 04 | Means to read CH2O, PM2.5, H, T data from the starting address 00 02 |
| 00 02 00 05 | Means to read CH2O, PM2.5, H, T, PM10 data from the starting address 00 02 |
| 00 03 00 01 | Gefur til kynna að PM2.5 gögn séu lesin frá upphafsstaðsetningunni 00 03 |
| 00 03 00 02 | Leiðir til að lesa PM2.5, H gögn frá upphafsstaðsetningunni 00 03 |
| 00 03 00 03 | Leiðir til að lesa PM2.5, H, T gögn frá upphafsstaðsetningunni 00 03 |
| 00 03 00 04 | Leiðir til að lesa PM2.5, H, T, PM10 gögn frá upphafsstaðsetningunni 00 03 |
| 00 04 00 01 | Gefur til kynna að H-gögnin séu lesin frá upphafsvistfanginu 00 04 |
| 00 04 00 02 | Leiðir til að lesa H, T gögn frá upphafsfanginu 00 04 |
| 00 04 00 03 | Leiðir til að lesa H, T, PM10 gögn frá upphafsstaðsetningunni 00 04 |
| 00 05 00 01 | Gefur til kynna að T-gögnin séu lesin frá upphafsvistfanginu 00 05 |
| 00 05 00 02 | Leiðir til að lesa T, PM10 gögn frá upphafsfanginu 00 05 |
| 00 06 00 01 | Gefur til kynna að PM10 gögn séu lesin frá upphafsfanginu 00 06 |
Hvernig á að lesa gagnaramma
Til dæmisample, if the address of the module is 0x01, the user needs to send 01 03 00 00 00 07 04 08 to read out seven kinds of sensor data.
The returned data format is as follows:
| Bæti[0] | Bæti[1] | Bæti[2] | Bæti[3] | Bæti[4] | Bæti[5] | Bæti[6] | Bæti[7] | Bæti[8] | – |
| Haus | Aðgerðarnúmer | Gagnalengd | CO2 Gögn | TVOC gögn | CH2O Data | – | |||
| 0x01 | 0x03 | 0x0E | CO2_H | CO2_L | TVOC_H | TVOC_L | CH2O_H | CH2O_L | – |
| Bæti[9] | Bæti[10] | Bæti[11] | Bæti[12] | Bæti[13] | Bæti[14] | Bæti[15] | Bæti[16] | Bæti[17] | Bæti[18] |
| PM2.5 Gögn | Rakastig gögn | Hitastigsgögn | PM10 Gögn | CRC16 Athugaðu | |||||
| PM2.5_H | PM2.5_L | Hum_H | Hum_L | Tem_H | Tem_L | PM10_H | PM10_L | CRC16_L | CRC16_H |
Útreikningsaðferð fyrir hverja skynjaragögn
CO2 (ppm) = CO2 _H * 256 + CO2 _L
TVOC(ug/m3) = (TVOC_H * 256 + TVOC_L) / 10
CH2O(ug/m3) = (CH2O_H * 256 + CH2O_L) / 10
PM2.5 (ug/m3) = PM2.5_H * 256 + PM2.5_L
PM10 (ug/m3) = PM10_H * 256 + PM10_L
Positive temperature (°C) = (Temperature _H * 256 + Temperature_ L) / 10
Til dæmisample: T = (0 x 0110) / 10 = 272 / 10 = 27.2 ℃
Neikvætt hitastig (°C)
Aðferð 1: Umbreyta beint í undirritað heiltölutegund, til dæmisample: T = 0 x ffbf / 10 = -65 / 10 = -6.5 ℃
Method 2: If greater than 0 x 7fff (32767)
Then it is a negative number T = (0 x ffbf – 65536) / 10 = (65471 – 65536) / 10 = -65 / 10 = -6.5 ℃
Humidity (%RH) = (Humidity _H * 256 + Humidity _L) / 10
Til dæmisample: T = (0 x 02AD) / 10 = 685 / 10 = 68.5 %RH
Note: If user need to use mg/m3 as the unit, please convert it. The conversion formula is: 1mg/m3 =1000 ug/m3
The length of the CRC check byte is 17 (that is, the bytes of Byte[0]~Byte[16]), select A001 or 8005 in reverse order.
Mál sem þarfnast athygli
- Avoid contact with organic solvents (including silica gel and other adhesives), paints, pharmaceuticals, oils and high-concentration gases.
- The module must not be subjected to excessive shock or vibration.
- Ekki nota þessa einingu á kerfi sem fela í sér persónulegt öryggi.
- Ekki setja eininguna upp í sterku lofthitunarumhverfi.
Útreikningsaðferð fyrir CRC-athugun
Function function: CRC check function, generate CRC
Parameter description: arr_ buff: array set to be verified
len: The length of the data to be verified
Return parameter: CRC is an unsigned int type, the high byte is the high byte in front, and the low byte is in the back unsigned int CRC_ Compute ( unsigned char *arr_ buff, unsigned char len)
{
unsigned int crc=0xFFFF;
óundirritaður bleikja i, j;
for ( j=0; j <len;j++)
{
crc=crc ^*arr_buff++;
for ( i=0; i<8; i++)
{
if( ( crc&0x0001) >0)
{
crc=crc>>1;
crc=crc^ 0xa001;
}
annað
crc=crc>>1;
}
}
return ( crc);
}
Skjöl / auðlindir
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