Lufft WS600-UMB User Manual

Operating Manual Compact Weather Station
62 G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
18.6.3 Address Configuration
UMB Device-ID and SDI-12 Address are connected, but the different address ranges and the
fact, that UMB ID’s are integer numbers, while SDI-12 addresses are ASCII characters, have
to be considered.
UMB Device ID1 (default) corresponds to SDI-12 Address ‘0’ (SDI-12 default).
Valid Address Ranges:
UMB (dec)
SDI-12 (ASCII)
1
to
10
‘0’
to
‘9’
18
to
43
‘A’
to
‘Z’
50
to
75
‘a’
to
‘z’
18.6.4 Data Messages
In the interest of simplified evaluation the assignment of measurement values to data buffers
‘0’ ... ‘9’ has been defined unified for all measurement commands. For this reason the
responses to C-requests have been restricted to 35 characters, not using the 75 characters
permitted for these requests
Currently buffers ‘0’ to ‘4’ are in use.
As with M-requests max. 9 values may be transmitted, the base data set of 9 values has
been assigned to buffers ‘0’ and ‘1’. Buffers ‘2’ to ‘4’ contain further measurement values.
This definition guaranties the compatibility to loggers designed according to older versions of
the SDI-12 standard.
The buffer assignment depends on the device variant (WS200-UMB ... WS600-UMB).
The complete set of measurement values, as defined for the UMB protocol has been made
available also in the SDI-12 environment. They can be accessed using the additional M and
C commands (aM1! ... aM6!, aMC1! ... aMC6!, aC1! ... aC6!, aCC1! ... aCC6!) (see below).
If the measurement value is not available for some reason, e.g. sensor failure, this is
indicated by a value of +999.0. or -999.9 The logger can then evaluate the reason of failure
by a aV! verificationrequest.The following tables show the measurement values in the
sequence they are arranged in the telegram (see example).
Depending on the configuration of the device the values will be transmitted in metric or US
units.
Note: The configured system of units is not indicated in the data messages. The logger may
request this setting with the I-command and adjust the evaluation of the data messages
accordingly
Example: M Request from a WS600-UMB station
0M!
00009<CR><LF> 9 measurement values are available
0D0!
0+13.5+85.7+1017.0+2.5+3.7<CR><LF>
Air temperature 13.5°C, rel. humidity 85.7%, rel. air pressure 1017hPa
avg. wind speed 2.5m/s, max wind speed 3.7m/s.
0D1!
0+43.7+9.8+60+4.4<CR><LF>
Wind direction 43.7° wet bulb temperature 9.8°C,
type of precipitation 60 (rain), precipitation intensity 4.4mm/h

Lufft WS600-UMB Specifications

General

Brand	Lufft
Model	WS600-UMB
Category	Weather Station
Language	English