APPENDIX 3 DIGITAL INTERFACE
AP-15
TRC - Thruster control data
TRD - Thruster data response
TTD - Tracked target data
TTM - Tracked target message
$**TRC,x,x.x,a,x.x,a,x.x, a,a*hh<CR><LF>
1 2 3 4 5 6 7 8
1. Number of thruster, bow or stern (01 to 99)
2. RPM demand value (-999.9 to 999.9)
3. RPM mode indicator (P=per cent R=revolutions per min
V=data invalid)
4. Pitch demand value (-180.0 to 180.0)
5. Pitch mode indicator (P=per cent D=degree V=data invalid)
6. Azimuth demand (000.0 to 359.9)
7. Operating location indicator (B=bridge P=port wing S=starboard wing
C=engine control room E=engine side/local W=Wing)
8. Sentence flag status (R=Sentence is a status report of current settings
(Used for a reply to a query.) C=Sentence is a configuration command
to change settintgs. A sentence without “C” is not a command.)
$**TRD,x,x.x,a,x.x,a,x.x*hh<CR><LF>
1 2 3 4 5 6
1. Number of thruster, bow or stern (01 to 99)
2. RPM response (-999.9 to 999.9)
3. RPM mode indicator (P=per cent R=revolutions per min
V=data invalid)
4. Pitch response value (-999.9 to 999.9)
5. Pitch mode indicator (P=per cent D=degree V=data invalid)
6. Azimuth response (000.0 to 359.0, Null)
!**TTD,xx,xx,x,s--s,x*hh<CR><LF>
1 2 3 4 5
1. Total hex number of sentences need to transfer the message (1 to FF)
2. Hex sentence number (1 to FF)
3. Sequential message identifier (0 to 9)
4. Encapsulated trancked target data (6 bit binary-converted data)
5. Number of fill bits (0 to 5)
$--TTM,xx,x.x,x.x,a,x.x,x.x,a,x.x,x.x,a,c--c,a,a,hhmmss.ss,a*hh<CR><LF>
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15
1. Target number (00 to 999)
2. Target distance from own ship (0.000 - 99.999)
3. Bearing from own ship,degrees (0.0 - 359.9)
4. True or Relative (T)
5. Target speed (0.00 - 999.99, null)
6. Target course, degrees (0.0 - 359.9, null)
7. True or Relative
8. Distance of closet point of approach (0.00 - 99.99, null)
9. Time to CPA, min., "-" increasing (-99.99 - 99.99, null)
10. Speed/distance units (N=nm)
11. Target name (null)
12. Target status (L=Lost Q=Acquiring T=Tracking)
13. Reference target (R, NULL otherwise)
14. UTC of data (null)
15. Type of acquisition (A=Automatic M=Manual )
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