Nmea Vhw Datagram; Nmea Vlw Datagram - Simrad ES80 Reference Manual

NMEA VHW datagram

The NMEA VHW datagram contains the compass heading to which the vessel points,
and the speed of the vessel relative to the water.
Format
$--VHW,x.x,T,x.x,M,x.x,N,x.x,K*hh<CR><LF>
Description
1 : Talker identifier
$—
2 : Datagram identifier
VHW
3 : Heading (Degrees True)
x.x,T
4 : Heading (Degrees Magnetic)
x.x,M
5 : Speed relative to water (knots)
x.x,N
Resolution: 0.1 knots
6 : Speed relative to water (km/hr),
x.x,K
Resolution: 0.1 km/hr
7 : Checksum
*hh
Related topics
NMEA datagram formats, page 491
Sensor Installation page, page 363
Sensor Configuration page, page 369
Relay Output page, page 395
Interface specifications, page 473

NMEA VLW datagram

The NMEA VLW datagram contains the travelled distance of the vessel.
Format
$--VLW,x.x,N,y.y,N,z.z,N,g.g,N*hh<CR><LF>
Description
1 : Talker identifier
$—
2 : Datagram identifier
VLW
3 : Water distance, Total cumulative (Nautical miles)
x.x,N
4 : Water distance, Since reset (Nautical miles)
y.y,N
406273/C
Datagram formats
501