User Manual
Host
←
Slave
3A 82 05 00 65
The module sends system status to the host:
optical system parameter writing failure
Host
←
Slave
3A 82 06 00 48
The module sends system status to the host:
received serial data check error
Host
←
Slave
3A 82 07 00 BC
The module sends system status to the host:
the current voltage is too low
1.2.5 Optical System Calibration Function
Due to the optical path asymmetry of the system caused by processing, installation, etc.,
the module requires optical system calibration before use when installed to ensure the
accuracy of rainfall detection. For detailed commands, refer to Table 1.9.
When the optical calibration is not good, please check whether there is anything wrong
with the installation, after correcting it, clear the system error states first and then re-
perform the optical calibration.
Note: Parameters V, S, N, frequency and calibration will be saved to internal Flash during configuration,
so it is necessary to ensure a stable power supply.
