APPENDIX 3 DIGITAL INTERFACE
AP-18
Output sentences
See input sentences for ACN, ALC, ALF, ARC, HBT, OSD, RRT, VBW, VDR and VSD.
ABM - UAIS Addressed binary and safety related message
ACK - Acknowledge alarm
BBM - UAIS broadcast binary message
DDC - Display dimming control
EVE - General event message
XTE - Xross-track error, measure
!--ABM,x,x,x,xxxxxxxxx,x,x.x,s--s,x*hh<CR><LF>
1 2 3 4 5 6 7 8
1. Total number of sentences needed to transfer the message (1 - 9)
2. Message sentence number (1 - 9)
3. Message sequence identifier (0 - 3)
4. The MMSI of destination AIS unit for the ITU-R M.1371 message (9 digits)
5. AIS channel for broadcast of the radio message (0 - 3)
6. VDL message number (6 or 12), see ITU-R M.1371
7. Encapsulated data (1 - 63 bytes)
8. Number of fill-bits (0 - 5)
$--ACK,xxx*hh<CR><LF>
1
1. Local alarm number (identifier) (000 - 999)
$--BBM,x,x,x,x,xx,s--s,x*hh<CR><LF>
12 3 4 5 6 7
1. Total number of sentences needed to transfer the message (1 - 9)
2. Sentence number (1 - 9)
3. Sequential Message identifier (0 - 9)
4. AIS channel for broadcast of the radio message (0 - 3)
5. ITU-R M.1371 message ID (8 or 14)
6. Encapsulated data (1 - 63 bytes)
7. Number of fill-bits, 0 to 5
$**DDC,a,xx,a*hh<CR><LF>
1 2 3 4
1. Brilliance preset (D=Daytime K=Dusk N=Nightime O=Backlight off setting)
2. Brilliance (%) (00 to 99)
3. Color palette preset (D=Daytime K=Dusk N=Nightime)
4. Sentences status flag
$ --EVE,hhmmss.ss,c--c,c--c*hh <CR><LF>
1 2 3
1. Event time (000000.00 - 235960.99)
2. Tag code used for identification of source of event (RA0001 - RA0010, EI0001 - EI0016,
IN0001 - IN0016, II0001 - II0016)
3. Event description (OPERATION)
$--XTE,A,A,x.x,a,N,a*hh<CR><LF>
1 2 3 4 5 6
1. Status: A=data valid V=LORAN C blink or SNR warning
2. Status: V=LORAN C blink or SNR warning
3. Magnitude of cross-track error (0.0000 - 9.9999)
4. Direction to steer, L/R
5. Units, nautical miles (fixed)
6. Mode indicator (A=Autonomous mode D=Differential mode S=Simulator mode)
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