Lambrecht rain[e]H3, User Manual

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User Manual
Precipitation Sensor rain[e]H3 with Ethernet
Id-No. 00.15184.540 020
rain[e]H3 Precipitation Sensor Manual
Start Concurrent Measurement and Request - CRC aCC!
Same command as
aC!
but in addition to the generated data the sensor returns a 3-digit checksum. For information
on how the CRC checksum gets generated, please consult ‘SDI-12 Standard Version1.3, 2012, chapter 4.4.12’.
Syntax:
Command Answer
aCC! a00306<CR><LF>
a – Sensor address a – Sensor address
C – Command ‘Start Concurrent 003 – Seconds the sensor needs until the
Measurement’ measured data can be returned
C – Request for transmission of the (= 3 s)
CRC checksum 06 – Number of provided measured data
! – End of command <CR><LF> – End of answer
Example:
Command Answer
2CC! 200306<CR><LF>
Send Data - aD0! and aD1!
Data generated by the commands C , M , or V are requested from the sensor with aD0! and aD1! . The sensor
uses the respective arithmetic sign (’+’ or ‘-’) to separate the values. If the data was requested with a CC or
MC command, it will be returned with the CRC checksum. For information on how the CRC checksum gets
generated, please consult ‘SDI-12 Standard Version1.3, 2012, chapter 4.4.12’.
The measured data is returned in metric units.
Measured data Unit
Buffer 0
Precipitation intensity within the last minute mm/min
Precipitation intensity within the last minute in mm/h mm/h
Precipitation intensity since last request mm/min
Measured data Unit
Buffer 1
Precipitation intensity since last request in mm/h mm/h
Precipitation amount since last request mm/m²
Precipitation amount total mm/m²
Syntax for measurements with aC! or aM!
Command Answer
aD0! a<values<CR><LF>
a – Sensor address a – Sensor address
D – Command ‘Send Data’ <values> – Requested data separated by
0 – Request for the data in buffer 0 resp. sign (‘+’ or ‘-’)
or
1 = buffer 1
! – End of command <CR><LF> – End of answer
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