APPENDIX 7 DIGITAL INTERFACE (IEC 61162-1 EDITION 4(2010-11))
AP-20
• POS: Device Position and Ship Dimensions Report or Confirmation Command
• RMC: Recommended Minimum Specific GNSS Data
• ROT: Rate of Turn
• THS: True Heading & Status
$**POS,cc,xx,a, x.x,x.x,x.x,a,x.x,x.x,a*hh <CR><LF>
1 2 3 4 5 6 7 8 9 10
1. Equipment ID (GP, GL, GA, GN, HE, HN, HC)
2. Equipment number (01 to 99)
3. Position validity flag (A=Valid V=Invalid)
4. Position X-coordinate (-999.9 to 999.9)
5. Position Y-coordinate (0 to 999.9)
6. Position Z-coordinate (0 to 999.9)
7. Ship’s width and length (A=Valid)
8. Ship’s width (000.0 to 999.9)
9. Ship’s length (000.0 to 999.9)
10. Sentence status flag (R=Sentence is status report of current settings)
$**RMC,hhmmss.ss,A,llll.ll,a,yyyyy.yy,a,x.x,x.x,ddmmyy,x.x,a,a,a*hh<CR><LF>
1 2 3 4 5 6 7 8 9 10
11 1213
1. UTC of position fix (000000.00 to 235959.99)
2. Status (A=data valid, V=navigation receiver warning)
3. Latitude (0000.0000 to 9000.0000)
4. N/S
5. Longitude (0000.0000 to 18000.0000)
6. E/W
7. Speed over ground, knots (0.000 to 9999.999)
8. Course over ground, degrees true (0.0 to 359.9)
9. Date (010100 to 311299)
10. Magnetic variation, degrees (0.0 to 180.0,null)
11. E/W (E/W,null)
12. Mode indicator (A= Autonomous mode, D= Differential mode, E=Estimated (DR), S= Simulator,
M=Manual, N=Data not valid, P=Precise)
13. Navigational status indication (S=Safe C=Caution U=Unsafe V=Navigational status not valid)
$**ROT,x.x,A *hh<CR><LF>
1 2
1. Rate of turn, deg/min, "-"=bow turns to port (-9999.9 - 9999.9,null)
2. Status (A=data valid, V=data invalid)
$**THS,x.x,a*hh<CR><LF>
1 2
1. Heading, degrees True (0.0 to 359.9 null)
2. Mode indicator (A=Autonomous, E=Estimated, M=Manual input,
S=Simulator V=Data not valid)
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