WS425 A/B NMEA Standard data message - WMT700

WMT700 Series User Guide

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User guide

The standard variable length, comma-separated, MWV wind message is defined by NMEA 0183 V2.20 as follows:

Name Description
$WIMWV 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 = Data valid
  • V = Invalid data
* 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.