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
Bu
ff
er 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
Bu
ff
er 1
Precipitation intensity since last request in mm/h
mm/h
Precipitation amount since last request
mm/m²
Precipitation amount total *
mm/m²
* see also chapter ‘Total Precipitation’
21
SDI-RAINE-HYDRO
USER MANUAL
700-SDI-RAINE-HYDRO Rev1 03 Mar 2021
Part# 21184
