Operating Instructions    Smart Weather Sensor 
  G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany  129 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Figure 44: Sensor 
Configuration XDR 
 
19.8  Communication: XDR Protocol 
The XDR protocol allows to transmit a selected data set of the Smart Weather Sensor in a 
NMEA compatible format. The data telegram can be transmitted on request, or the Smart 
Weather Sensor can be set into auto transmit mode, where the data telegram will be 
triggered automatically at an selectable interval. 
A set of ASCII configuration messages allows to apply some configuration settings without 
leaving the XDR protocol. 
For configuration settings exceeding this command set use the UMB Config Tool. To change 
into the UMB protocol a UMB message must be addressed to the device within 5 seconds 
after power up or reset. 
 
 
 
Automatic telegram output 
activate continous mode (automatic result 
message transmission) 
select absolute or relative air pressure for the 
measurement data message (seconds) 
Interval for automatic result message transmission 
NMEA talker device identifier 
Select the Talker ID part of the NMEA telegram 
header