Example: set compensation pressure, Table 20 example set_parameter invoke message, Table 21 example set_parameter response message – Vaisala HMM105 User Manual
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Chapter 2 _______________________________________________________________ I2C Interface
VAISALA ____________________________________________________________________ 15
Example: Set Compensation Pressure
Table 20
Example Set_Parameter Invoke Message
Message Bytes (hex) Content
2F
I
2
C address
82
Set_Parameter command
2F
Device address
0A
Frame length
40
Parameter ID of compensation pressure
00
Pressure 1000 hpa
00
7A
44
D8
CRC high
31
CRC lo
Table 21
Example Set_Parameter Response Message
Message Bytes (hex) Content
2F
I
2
C address
04
Status byte (error active, ACK)
82
Set_parameter command
2F
Device address
08
Frame length
40
Parameter ID of compensation pressure
00
Return code: Ok
D6
CRC high
5C
CRC lo