Marport Scala2, User Manual

Page: 162 / 177

Scala2 | Version 5 | Appendix
NMEA Sentence Format
First compliant
version
of Scala
VBW - Dual
Ground/
Water Speed
$--VBW,a.a,b.b,A,c.c,d.d,A,e.e,A,f.f,A*hh<CR><LF>
1. $--: Talker identifier*
2. VBW: Sentence formatter*
3. a.a: Longitudinal water speed (knots), "-" = astern*
4. b.b: Transverse water speed, "-" = port*
5. A: Status, A = data valid, V = data invalid*
6. c.c: Longitudinal ground speed, "-" = astern*
7. d.d: Transverse ground speed, "-" = port*
8. A: Status, A = data valid, V = data invalid*
9. e.e: Stern Transverse water speed, "-" = port*
10. A: Status, A = data valid, V = data invalid*
11. f.f: Stern Transverse ground speed, "-" = port*
12. A: Status, A = data valid, V = data invalid*
13. *hh: Checksum*
1.4.0.0
VHW - Water
Speed and
Heading
$--VHW,a.a,T,b.b,M,c.c,N,d.d,K*hh<CR><LF>
1. $--: Talker identifier*
2. VHW: Sentence formatter*
3. a.a,T: Heading, degrees True*
4. b.b,M: Heading, degrees Magnetic*
5. c.c,N: Speed, knots*
6. d.d,K: Speed, km/hr
7. *hh: Checksum*
1.4.0.0
VLW - Dual
Ground/
Water Distance
$--VLW,a.a,N,b.b,N,c.c,N,d.d,N*hh<CR><LF>
1. $--: Talker identifier*
2. VLW: Sentence formatter*
3. a.a,N: Total cumulative water distance, nautical miles*
4. b.b,N: Water distance since reset, nautical miles*
5. c.c,N: Total cumulative ground distance, nautical miles*
6. d.d,N: Ground distance since reset, nautical miles*
7. *hh: Checksum*
1.3.3.0
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