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Product

 [XD6869B]  TVOC Air Quality Recorder

XD6869B

Technical Parameters

Technical parameter Parameter value
Brand XUNCHIP
Communication Interface RS485
Default baud rate 9600 8 n 1
Power DC5V 1A
Running temperature -30~85℃
Working humidity 5%RH~90%RH

Product Size

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Wiring instructions

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Product List

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Communication Protocol

    The product uses RS485 MODBUS-RTU standard protocol format, all operation or reply commands are hexadecimal data. The default device address is 1 when the device leaves the factory, and the module or NON-Recorder default baud rate is 9600,8,n,1 ,but data recorder default baud rate is 115200 .
1. Read data (function code 0x03)
    Inquiry frame (hexadecimal), sending example: query 1 data of 1# device, the upper computer sends the command: 01 03 00 00 00 01 84 0A .
Address Function Code Start Address Data Length Check Code
01 03 00 00 00 01 84 0A
    For the correct query frame, the device will respond with data: 01 03 02 00 79 79 A6 , response format:
Address Function Code Length Data 1 Check Code
01 03 02 00 79 79 A6
    Data description: The data in the command is hexadecimal, take data 1 as an example, 00 79 is converted to decimal value as 121, assuming the data magnification is 100, then the real value is 121/100=1.21, Others and so on.
2. Common data address table
Configuration Address Register Address Register Description Data Type Value Range
40001 00 00 TVOC Read Only 0~65535
40101 00 64 Model Code Read/Write 0~65535
40102 00 65 total number of measuring points read/write 1~20
40103 00 66 device address read/write 1~249
40104 00 67 baud rate read/write 0~6
40105 00 68 communication mode read/write 1~4
40106 00 69 protocol type read/write 1~10

 

software for test product
After downloading, please read the readme.txt documentation

Data and Software
software for test product
Data and Software
software for test product
After downloading, please read the readme.txt documentation

Data and Software

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