Vaisala HUMICAP HMM105, Technical Reference, Page: 17 / 23

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
00 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