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APPENDIX
AP-18
Output sentences
ABK - UAIS addressed and binary broadcast acknowledgement
$--ABK,xxxxxxxxx,a,x.x,x,x*hh<CR><LF>
| | | | | |
| | | | | +--- 6
| | | | +----- 5
| | | +------- 4
| | +---------- 3
| +------------- 2
+------------------- 1
1. MMSI of the addressed AIS unit
2. AIS channel of reception
3. Message type
4. Message sequence number
5. Type of acknowledgement
6. Checksum
ACA - See “Input sentences.”
ACS - Channel management information source
$--ACS,x,xxxxxxxxx,hhmmss.ss,xx,xx,xxxx*hh<CR><LF>
1. Sequence number, 0 to 9
2. MMSI of originator
3. UTC at receipt of regional operating settings
4. UTC day, 01- to 31
5. UTC month, 01 to 12
6. UTC year
6
5
4
3
2
1
ALR - Set alarm state
$--ALR,hhmmss.ss,xxx,A,A,c--c*hh<CR><LF>
| | | | | |
| | | | | +------------- 6
| | | | +----------------- 5
| | | +-------------------- 4
| | +---------------------- 3
| +------------------------- 2
+--------------------------------- 1
1. Time of alarm condition change, UTC
2. Local alarm number(identifier)
3. Alarm condition(A=threshold exceeded, V=not exceeded)
4. Alarm's acknowledge state, A=acknowledged V=unacknowledged
5. Alarm's description text
6. Checksum