envea CAIRSENS PM Série Notice Technique page 64

10.2 5 minutes archive DATA of all parameters
Command byte is CMD =
The parameter allowing the data download PARAM is built on a byte which value can vary and refer
to several periods to download:
· 0x00 : 10 measurements ( 5 minutes averaged DATA ), total of 50 minutes recovered DATA
Note : Others option are skipped from the list to avoid size of frames too important ( 0x01...0x07 )
· Query for downloading 10 minutes data => PARAM = 0x00
SYNC
STX
LG
REF
CMD
PARAM
CRC
ETX
© 2016 Cairpol
0x0C
1 byte 0xFF
1 byte 0x02
1 byte 0x14
7 bytes 0x30
0x01
0x02
0x03
0x04
0x05
0x06
8 bytes 0x44 => CAIRSPM
0x44 => DUST
0x50 => 'P' = PACKET
0xFF
0xFF
0xFF
0xFF
0xFF
1 byte 0x0C => 5 min ARCHIVE DATA
1 byte 0x00=> 10 values MAX downloadable
2 bytes 0x63
0xA8
1 byte 0x03
CairSPM sensor 27