Vaisala WINDCAP WMT700 Series - WMT700 NMEA MWV Data Message; Missing Readings

E.3 WMT700 NMEA MWV Data Message
WMT700 NMEA MWV data message is as follows:
$<id>MWV,<dir>,<ref>,<spd>,<uni>,<sta>*<chk><CR><LF>
$ Message header
<id> Two character sensor ID; AA … ZZ
MWV Fixed text
<dir> Wind angle: 0 to 359 degrees
<ref> Reference: R = Relative
<spd> Wind speed
<uni> Wind speed unit: K = Kilometers per hour M = Meters per second N = Knots
<sta> Status: A = Valid data V = Invalid data
* Fixed text
<chk> Checksum (8-bit XOR, excluding $ and *)
<CR> Carriage return code, ASCII 0DH
<LF> Line feed code, ASCII 0AH
Example of the command and response:
$IIWIQ,MWV*2F<CR><LF>
$WIMWV,045,R,011.63,N,A*09<CR><LF>
Interpretation of the example message:
• Talker ID "II" queries the WMT700 NMEA MWV message from sensor which has address
parameter set to "WI".
• WMT700 responds with talker ID "WI" and the requested MWV message. The reported
relative wind direction is 045 degrees and the wind speed is 11.63 knots.
Missing Readings
If data is missing due to a measurement problem, the NMEA messages show "V" in the
status
field. Wind speed and wind direction fields are left empty.
E.3.1
Missing Readings
If data is missing due to a measurement problem, the NMEA messages show V in the status
field. Wind speed and wind direction fields are left empty.
Appendix E – WMT700 NMEA MWV Profile
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