APPENDIX 2 DIGITAL INTERFACE (IEC61162-1)
AP-9
VTG : Course over ground and ground speed
VWR : Wind relative Bearing and Velocity
VWT : True Wind Speed and Angle
ZDA : Time and date
$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,a,*hh <CR><LF>
1 2 3 4 5 6 7 8 9
1. Course over ground, degrees (0.0 - 359.9)
2. T=True (fixed)
3. Course over ground, degrees (0.0 - 359.9)
4. M=Magnetic (fixed)
5. Speed over ground, knots (0.00-9999.9)
6. N=Knots (fixed)
7. Speed over ground (0.00 - 9999.9)
8. K=km/h (fixed)
9. Mode indicator (A=Autonomous, D=Differential E = Estimated (dead reckoning)
M=Manual input S=Simulator N=Data not valid)
$**VWR,x.x,x,x.x,N,x.x,M,x.x,K<CR><LF>
1 2 3 4 5 6 7 8
1. Measured wind angle relative to the vessel, degrees (0.0 - 180.0)
2. L=Left semicircle, R=Right semicircle
3. Velocity, knots (0.0 - 9999.9)
4. Unit (N, fixed)
5. Velocity (0.0 - 999.9)
6. Unit (M, fixed)
7. Velocity, km/h
8. Unit (K, fixed)
$**VWT,x.x,x,x.x,N,x.x,M,x.x,K<CR><LF>
1 2 3 4 5 6 7 8
1. Measured wind angle relative to the vessel, degrees (0.0 - 180.0)
2. L=Left semicircle, R=Right semicircle
3. Velocity, knots (0.0 - 9999.9)
4. Unit (N, fixed)
5. Velocity (0.0 - 999.9)
6. Unit (M, fixed)
7. Velocity, km/h
8. Unit (K, fixed)
$GPZDA,hhmmss.ss,xx,xx,xxxx,xx,xx<CR><LF>
1 2 3 4 5 6
1. UTC (000000 - 235959)
2. Day (01 - 31)
3. Month (01 -12)
4. Year (UTC, 0000 - 9999)
5. Local zone, hours (-13 to
±
13)
6. Local zone, minutes (00 to
±
59)
