envea Cairpol Cairsens Notice Technique page 58

14 Cairsens - UART Version
measurement for 2 byte by value
· 0x02: send 7 answer of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
· 0x03: send 30 answers of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
· 0x04: send 60 answers of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
· 0x05: send 90 answers of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
· 0x06: send 240 answers of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
· 0x07: send 300 answers of 96 successive points of measurement for 1 byte by value , 48 successive
points of measurement for 2 byte by value
This number of points of measurement is valid for a sampling factory configured (meaning one
measurement per minute)
8.2 Answer
HeaderUart REF RSP PARAM TrailerUart
Answer byte is RSP = 0x0D
· Information + requested data = PARAM (see below)
PARAM holds various information about Cairsens' status in addition to the requested data.
This sequence of information consists of the 10 following parameters:
· Parameter 1 - 1 byte: number of the RS232 exchange frame, coded in hexadecimal (from 0x01 to
0xFF)
· Parameter 2 - 1 byte: total number of RS232 exchange frames, coded in hexadecimal (from 0x01 to
0xFF)
· Parameter 3 - 2 bytes: not used
· Parameter 4 - 1 byte: not used
· Parameter 5 – 1 byte: not used
· Parameter 6 – 1 byte: not used
· Parameter 7 – 1 byte: not used
· Parameter 8 – 1 byte: not used
· Parameter 9 – 2 bytes: not used
· Parameter 10 – 96 bytes:
1 byte by value : 96 data of 1 byte each = 96 bytes of pollutant level data
2 bytes by value : 48 data of 2 byte each = 96 bytes of pollutant level data
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