282
406388/B
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
VLW
: Datagram identifier
3
x.x,N
: Water distance, Total cumulative (Nautical miles)
4
y.y,N
: Water distance, Since reset (Nautical miles)
5
z.z,N
: Ground distance, Total cumulative (Nautical miles)
6
g.g,N
: Ground distance, Since reset (Nautical miles)
7
*hh
: Checksum
NMEA VTG datagram
The NMEA VTG datagram contains the actual course and speed relative to the ground.
Format
$--VTG,x.x,T,y.y,M,z.z,N,g.g,K,a*hh<CR><LF>
Description
1
$—
: Talker identifier
2
VTG
: Datagram identifier
3
x.x,T
: Course over ground (Degrees True)
4
y.y,M
: Course over ground (Degrees Magnetic)
5
z.z,N
: Speed over ground (knots)
6
g.g,K
: Speed over ground (km/hr)
Simrad TV80 Reference Manual
Содержание TV80
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