Datasheet

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Figure18: The I
2
C read sensor flowchart
Tables Table 1: I
2
C_MODBUS communication protocol summary table
Read Bus Description: I
2
C address is 0xB8; access a maximum of 10 registers;
Time to read a communication bus for a maximum of 3 S.
Sensor data are added each time you return the CRC, the user can choose
not to read the CRC
Read sensor frame format: Host frame format: (SLA + W) + function code (0x03) + start address + number
of registers
From the machine frame format: function code (0x03) + data length + return data
+ CRC
Write sensor frame format: Host frame format: (SLA + W) + function code (0x10) + + start address register
number + save data + CRC
From the machine frame format: function code (0x03) + start address + number +
CRC register
AM2320 sensors register list: