RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection

RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection - MRSLM
RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection - MRSLM
RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection - MRSLM

RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection

Regular price $258.99 Sale price $184.99 Save 29%
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RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection

Features:

1. PM2.5, PM10 output at the same time
2.unique dual-band data acquisition and automatic calibration technology, high consistency
3. the use of advanced laser anti-attenuation technology to ensure long-term stability of equipment
4.the device is 10-30V DC wide voltage Power supply, standard Modbus-RTU protocol
Specification:
DC power supply (default) :10-30VDC
Transmitter circuit Operating temperature: -20C-60C, 0% RH-80% RH
Communication interface:
485 communication (modbus) protocol baud rate: 2400.4800 (default) .9600
Data bit length: 8 bits
Parity mode: none
Stop bit length: 1 bit
Default modbus communication address: 1
Support function code: 03Parameter settings: Configured with the supplied configuration software via the 485 interface
Resolution: 0.1ug / cubic meter
Measuring range: PM2.5 / PM10 0-1000ug / cubic meter
Response speed: <= 90S
Warm-up time: <= 2min

Wiring instructions

Cable color

Description

Power

Brown

Power+ (10-30vdc )

black

Power -

Communication

yellow

485-A

Blue

485-B

Communication protocol

Basic communication parameters

Code

8-bit binary

Data bit

8 bit

Parity bit

NO

Stop bit

1 bit

Error check

CRC

Baud rate

2400bit/s, 4800bit/s, 9600 bit/s default is 4800bit/S

4.2 Data frame format definition

Adopt Modbus-RTU communication protocol, the format is as follows:
Initial structure ≥ 4 bytes of time
Address code = 1 byte
Noise Transmitter Instruction Manual (Type 485) V2.0
Function code = 1 byte
Data area = N bytes
Error check = 16-bit CRC code
End structure ≥ 4 bytes of time
Address code: is the address of the transmitter, which is unique in the communication network (factory default 0x01).
Function code: The instruction function of the command sent by the host. This transmitter only uses function code 0x03 (read register data).
Data area: The data area is the specific communication data. Note that the 16bits data high byte is in front!
CRC code: Two-byte check code.

Host inquiry frame structure:

Address code

Function code

Register start address

Register length

check code low

Check code high

1 bytes

1 bytes

2 bytes

2 bytes

1 bytes

1 bytes

Slave transponder frame structure

Address code

Function code

effective byte

No 1 Data area

NO2 Data area

No N Data area

Check code

1 bytes

1 bytes

1 bytes

2 bytes

2 bytes

2 bytes

2 bytes

Register address

Register address

PLC or configuration address

content

operation

0000 H

40001

PM2.5

Upload data is the real value

Read only

0000 H

40002

PM10

Upload data is the real value

Read only

4.4 Communication protocol examples and explanations

Example: Read the PM value of device address 0x01

Inquiry frame:

Address code

Function code

Start address

Data length

check code low

Check code high

0x01

0x03

0x00 0x00

0x00 0x02

0xC4

0x0B

Response frame: (eg read 85ug/m3 for PM2.5 and 156ug/m3 for PM10)

Address code

Function code

effective byte

humidity

temperature

check code low

Check code high

0x01

0x03

0x04

0x00 0x55

0x00 0x9c

0xEA

0x4A

PM2.5 calculation:

Air quality (PM2.5/P10) transmitter instruction manual (type 485) V2.0
PM2.5:0055 H (hexadecimal) = 85=> PM2.5 = 85ug/m3
PM10 calculation:

PM10:009CH (hexadecimal) = 156 => PM10 = 156ug/m3
Package includes:

1x PM2.5/PM10 Sensor
Details Pictures:



(n/a)RS485 PM2.5/PM10 Sensor Modbus Particle Detection Sensor Transmitter Air Quality Detection
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