Section 6
Parameter Settings
74
FT205EV Wind Sensors
– User Manual
6.4.29 WV Polar: Query the Wind Velocity Reading
Command
Parameter
WV (Polar)
Command
Syntax
SET Sensor:
N/A
QUERY Sensor:
$<listenerID>,WV?*<checksum><cr><lf>
$aa,WV?*hh<cr><lf>
Sensor output:
$<talkerID>,WVP=<speed>,<angle>,<status>*<checksum>
<cr><lf>
$aa,WVP=xxx.x,xxx,x*hh<cr><lf>
For DFC Mode:
$<talkerID>,WVP=<speed>,<angle>,<status>,<temperatu
re>,<temp.units>,<temp.status>*<checksum><cr><lf>
$aa,WVP=www.w,xxx,y,zzzz.z,a,b*hh<cr><lf>
Parameters
<speed>
000.0 to 075.0
Measured wind speed in metres per second
<angle>
000 to 359
Measured wind direction in degrees relative to sensor datum
< status >
0 to Z
Indicates whether an error condition was detected by the sensor
operating system. A status value of 0 indicates no issues have been
detected (ASCII 30(HEX)).
If the sensor detects an error condition, the status character will be
set to 1. If the Overspeed Warning Scheme (see Section 2.8) is
enabled and if the sensor detects wind speed above the maximum
range, the status flag will be set to 2.
<
Temperature>
-020.0 to +060
-20°C to +60°C
<Temp Units>
C
Degrees Celsius
<Temp Status>
V or A
V (Valid temperature data) or (Acquiring data
– not yet valid)
Examples
Example 1
The following example illustrates the polar wind velocity data format. The example shows
the sensor output with a wind speed of 20m/s and a wind angle of 45°.
Message
Comment
$01,WV?*//<cr><lf>
Query the wind velocity
$WI,WVP=020.0,045,0*73<cr><lf>
Sensor polar response
Example 2
The following examples illustrates the DFC (Combined) wind velocity data format. The
example shows the sensor output with a wind speed of 0m/s, a wind angle of 323° and
acoustic temperature of +26.3°C.
Message
$01,WV?*13<cr><lf>
$WI,WVC=000.0,323,0,+026.3,C,A*4D
Comment
Query the wind velocity
Sensor Response (DFC)
