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Operating Instructions
rain[e]observer
Operating Instructions
rain[e]observer Precipitation Measuring System
Start verification - aV! (Error string)
The
aV!
command is used to carry out a system analysis for service purposes and to create an error string. It has
the same format as the command
aM!
(see above). The
rain[e]
responds to it with
a0039
.
Syntax
Command
Response
aV!
a0039<CR><LF>
a
– Sensor address
a
– Sensor address
V
– Command - Start verification
003
– Seconds until the sensor returns the
measurement data (= 3 s)
9
– Number of measurement data
!
– Command end
<CR><LF>
– End of response
Example
Command
Response
1V!
10039<CR><LF>
The measurement data can be called up using the command
aD0!
(See above under
Send data
).
Output data
Value range
Buffer 0
Only for Lambrecht service
0...99
Error exceeding 10°C with heating on
0 or 1
Heating error
0 or 1
Temperature sensor error inside
0 or 1
Temperature sensor error on the funnel
0 or 1
Only for Lambrecht service
0 or 1
Only for Lambrecht service
0 or 1
Only for Lambrecht service
0 or 1
Only for Lambrecht service
0 or 1
+0 = ok; +1 = error
The data are not overwritten until the next “
C
”, “
M
”, or “
V
” command and can be called up multiple times.
Note on the SDI-12 Pause signal
As the
rain[e]
does not have any sleep mode, it does not have to be woken up from one. This means it ignores
the
Pause
command. Therefore, restrictions that are associated with the
Pause
command do not have to be
considered.
11
Modbus protocol
The Lambrecht meteo Modbus sensors and the met[LOG] follow the specification of the Modbus organization.
Modbus Application Protocol Specification V1.1b3 (see www.modbus.org).
11.1 Data encoding
Modbus uses the "Big-Endian" format for addresses and data. This means that if a value is transmitted with a
number format that is larger than a single byte, the most significant byte is sent first. With values that go beyond
a register (e.g. 32 bit), this is not clearly specified at Modbus. The Lambrecht Modbus sensors follow the "Big-
Endian" number format in these cases (32 bit or 64 bit).
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