Vaisala WXT520 - Manual (Page 129)

Chapter 8 ____________________________________________ Sensor and Data Message Settings
VAISALA______________________________________________________________________ 127
Composite Data Message (aR0)
The parameters to be included in the composite data message aR0 can
be defined in the parameter selection fields of each parameter (aWU,R,
aTU,R, aRU,R, and aSU,R). See parameter tables of each sensor in the
previous sections. See the following examples.
Example (ASCII and NMEA 0183, device address 0):
How to format a composite data message with average wind direction,
average wind speed, temperature, humidity and pressure data when the
original composite data message contains following data: maximum
wind direction, maximum wind speed, temperature, humidity, pressure,
accumulated rainfall, supply voltage and heating voltage:
0R0<cr><lf>
0R0,Dx=009D,Sx=0.2M,Ta=23.3C,Ua=37.5P,Pa=996.8H,
Rc=0.000I,Vs=12.0V,Vh=0.0N<cr><lf>
Replace the maximum wind direction (Dx) and speed (Sx) with average
wind direction (Dm) and average wind speed (Sm):
0WU,R=&01001000<cr><lf>
0WU,R=11110000&01001000<cr><lf>
Remove the heating voltage (Vh) and temperature (Th) data from the
composite data message, and include the information field (Id):
0SU,R=&00001000<cr><lf>
0SU,R=11110000&00001000<cr><lf>
Remove the accumulated rainfall (Rc) from the composite data
message:
0RU,R=&00000000<cr><lf>
0RU,R=11111100&00000000<cr><lf>
NOTE When changing the bits 9-16 of the parameter selection of any sensor,
the command can be shortened by replacing the bits 1-8 with a single
'&' character, see the examples.