Operating Instructions
Smart Weather Sensor
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
113
19.6.6 Message Device Identification
The device responds to the identification request with following message (example for SDI-
12 device address ‘0’:
0I!
013Lufft.deWSx00ynnn
x: device type (4, 5, 6, 2, 3 )
y: Metric / US units ( m = metric, u = US )
nnn: Software version
i.e. for a WS600-UMB, configured for US units:
0I!
013Lufft.deWS600u022
19.6.7 Message Verification
The command verification aV! is used to evaluate status information of the device. The
device responds with
a0005<CR<LF>
WS700/800-UMB:
a0006<CR<LF>
to the request, i.e. 5 (6) values are available in the buffers.
The first 3 (4)
“measurement values”, transmitted in buffer ‘0’ contain the status information
of the measurement channels.
The status data of the channels are assembled to form “fake measurement values”, where
each digit represents one status. See below for the coding of states. Generally each sensor
has two status values, one for the direct value and another for the measurement value buffer
used for the evaluation of the average, min, and max values.
The last two values, transmitted in buffer ‘1’, show the heating temperatures of wind and
precipitation sensor.
Buffer ‘0’
Status group1: +nnnn
Air temperature, air temperature buffer, dew point, dew point
buffer
Status group1: +nnnnnn
(WS401 / WS601 only)
Air temperature, air temperature buffer, dew point, dew point
buffer, leaf wetness status, leaf wetness buffer status
Status group 2: +nnnnnn
Rel. Humidity, rel. Humidity buffer, abs. Humidity, abs
humidity buffer, mixing ration, mixing ration buffer
Status group 3: +nnnnnn
Air pressure, air pressure buffer, wind, wind buffer,
compass, precipitation
(WS301/501 transmits the global radiation status instead of
the precipitation status)
Status group 4: +nnnn
(WS700-UMB, WS800-UMB
only)
Global radiation status, global radiation buffer status,
lightning detector status, lightning detector buffer status
B
uffer ‘1’, device configured for metric units
Measurement value
UMB
Channel
min
max
Unit
Heating temp. Wind sensor
112
-50
+150
°C
Heating temp. Precip. sensor
113
-50
+150
°C
B
uffer ‘1’, device configured for US units
Heating temp. Wind sensor
117
-58
+302
°F
Heating temp. Precip. sensor
118
-58
+302
°F