Example: read co2 measurement result, Example: read co, Measurement result – Vaisala GMP231 User Manual
Page 62: Table 23, Get_parameter invoke message example, Table 24, Get_parameter response message example
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User's Guide _______________________________________________________________________
60 ___________________________________________________________________ M211501EN-C
Example: Read CO
2
Measurement Result
Table 23
Get_Parameter Invoke Message Example
Message Bytes (hex)
Content
12
I
2
C address
81
Get_parameter command
09
Device address
06
Frame length
0A
CO2 Parameter ID
AA
CRC high
9F
CRC lo
Table 24
Get_Parameter Response Message Example
Message Bytes (hex)
Content
13
I
2
C address
00
Status byte (no errors, ACK)
81
Get_parameter command
09
Device address
0B
Frame length
0A
CO2 Parameter ID
69
CO2 value 653.6314 ppm
68
23
44
75
CRC high
7D
CRC lo
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