Operating Instructions
rain[e]observer
Operating Instructions
rain[e]observer Precipitation Measuring System
Syntax
Command
Response
aAb!
b<CR><LF>
a
– Old sensor address
b
– New sensor address
A
– Command - Other address
b
– New sensor address
!
– Command end
<
CR><LF>
– End of responset
Example:
Command
Response
0A1!
1<CR><LF>
Start measurement - aM!
The
aM!
command requests the sensor to process the available measurement data and write it to an output string.
Unlike standard sensors, as described in the SDI-12 documentation, the
rain[e]
measures continuously. As the
string is generated, the recorded measurement values are loaded into a temporary buffer and are then processed
upon completion of this event. Which is why the
rain[e]
always responds with
a003
. This is also the reason why
the
rain[e]
does not send a
service request
and ignores commands to interrupt measuring. The connected data
logger has to comply with the returned waiting time (3 seconds). When the waiting time is over, the data can be
retrieved with the commands
aD0!
and
aD1!
(See below under
Send data
). The data are not overwritten until the
next
C
,
M
, or
V
command and can be called up multiple times.
Syntax
Command
Response
aM!
a0036<CR><LF>
a
– Sensor address
a
– Sensor address
M
– Command - Start measurement
003
– Seconds until the sensor returns the
measurement data (= 3 s)
06
– Number of measurement data
!
– Command end
<CR><LF>
– End of response
Example
:
Command
Response
1M!
10036<CR><LF>
The measurement data can then be called up with the commands
aD0!
and
aD1!
(See below under
Send data
).
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