Operating Instructions    Smart Weather Sensor 
  G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany  133 
19.8.5  Message Format for Measurement 0R0 
The 0R0 sentence format is a proprietary format similar to NMEA 0183 rules. The 0R0 
sentence contains essential measurement values of the compact weather station and is 
designed for compatibility with existing installations. 
The sentence is requested by the PB command for single measurement and PC for cyclic 
transmission. 
If certain measurement values are not available for the subtype of the individual weather 
station the related value will be replaced by 999999. The same applies for measurement 
values with status not “OK”. 
The message is field oriented, with variable length. The fields are separated by ','. 
 
Message Format: 
0R0,Dm=aaaD,Sm=bb.bM,Ta=cc.cC,Ua=dd.dP,Pa=e.eeeeB,Rc=f.ffM, Pt=ggN<CR><LF> 
 
0R0    message header 
,     separator 
Dm    identifier wind direction 
=     separator 
aaa     wind direction in ° 
D    unit ° 
,    separator 
Sm    identifier wind speed 
=    separator 
bb.b     wind speed in m/s 
M    unit m/s 
,    separator 
Ta     identifier air temperature 
=     separator 
cc.c     air temperature in °C 
C    unit: °C 
,     separator 
Ua    identifier relative humidity 
=    separator 
dd.d     relative humidity in % 
P    unit % 
,     separator 
Pa    identifier air pressure 
=    separator 
e.eeee    air pressure in Bar 
B    unit Bar 
,     separator 
Rc    identifier precipitation difference 
=    separator 
ff.ff    precipitation difference (related to last transmission) in mm 
M    unit mm 
,     separator