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Operating Manual
Compact Weather Station
58
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany
Figure 25Sensor
Configuration SDI-12
Figure 26Sensor
Configuration SDI-12
Units
18.6 Communication in SDI-12 Mode
The communication in the SDI-12 mode of the WSxxx is conforming to the standard defined
in ‚SDI-12 A Serial-Digital Interface Standard for Microprocessor-Based Sensors Version 1.3
January 12, 2009‘ . The station may be operated in bus mode together with other SDI-12
sensors, connected to one SDI master (logger).
18.6.1 Preconditions for SDI-12 Operation
As the interface settings defined in the SDI-12 standard are significantly different from the
UMB default settings, some preconditions have to be met for operation:
Hardware version equal or higher 5
Software version equal or higher 2.2
Jumper for activation of SDI-12 mode has to be wired (see below)
Setting for SDI-12 mode in the configuration with UMB Config Tool (at least V1.2)
Note:
To activate the SDI-12 mode a jumper has to be wired between the gray and pink wire
of the connector cable.
Using the UMB Config Tool the protoc
ol mode of the station has to be set to “SDI-12”. This
will automatically set the baud rate to 1200.
Note:
devices with older hardware can not to be set to SDI-12!
Measurement data can be transmitted alternatively in metric or US units. The selection is
done by the UMB Config Tool.
Metric units
US units