Lufft WS700-UBM User Manual

Operating Instructions Smart Weather Sensor
G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany 81
Command
Function
aXD+nnn.n!
Set local compass deviation
aXL<n/s/w>!
Set power saving mode
aXMn!
Set the heating mode of the device
aXA<t/p/w>+nn!
Integration time for average and min/max evaluation
aXC!
Clear the abs. precipitation amount ( includes a device reset)
aXR!
Device reset
The composition of the minimal and the full basic data set depends on the variant (WS200-
UMB ... WS700-UMB) of the device in question (see below). The same applies to the
availability of the additional measurement commands (aM1!, aC1! etc.)
Due the applied measurement processes the devices of the WS family will, different from
other sensors described in the SDI-12 document, in normal operation mode always
measure continuously. This causes some special properties while in this mode:
 The device does not need a “Wakeup” and does not have a sleep mode. So the
reactions to “Break” signals and any related timings are inapplicable. “Break” will be
ignored by WS devices.
 Data requested with M- or C- commands are always available immediately. The
device will always respond with a000n resp. a000nn. This means the device will not
send any service request and will ignore measurement abort signals. The logger
should request the data immediately.
 M- and C- command only differ in the number of values made available in the buffers
(in both cases the maximum permitted by the standards of 9 resp. 20).
 We recommend to use the commands for continuous measurement (R-commands)
to request the data.
 When in power saving mode 2 the device will wake up by a „Break“ signal. Other
functions of the „Break“ signal are not implemented.
 When in power saving mode 2 the device responds to M or C commands with
a002n resp. a002nn and holds the data available within 2 seconds. It will not send a
service request, signals to abort the measurement are ignored.
 For the reduced data set in power saving mode 2 a unified data buffer structure for
all device models has been defined. Depending on the individual model unused
channels will be set to the “invalid” marker 999.9.

Lufft WS700-UBM Specifications

General

Brand	Lufft
Model	WS700-UBM
Category	Accessories
Language	English