The standard variable length, comma-separated, MWV wind message is defined by NMEA 0183 V2.20 as follows:
$WIMWV,<dir>,<ref>,<spd>,<uni>,<sta>*<chk><CR><LF>
Name | Description |
---|---|
$WIMWV | Fixed text |
<dir> | Wind angle: 0 to 359 degrees |
<ref> | Reference: R = Relative |
<spd> | Wind speed |
<uni> | Wind speed unit:
|
<sta> | Status:
|
* | Fixed text |
<chk> | Checksum (8-bit XOR, excluding $ and *) |
<CR> | Carriage return code, ASCII 0DH |
<LF> | Line feed code, ASCII 0AH |
When the NMEA Standard profile is selected, the autoInt parameter must have a non-zero value since no polling command is defined for this profile. |
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.