Users Manual Part 9

APPENDIX 2 DIGITAL INTERFACE
AP-12
Output sentences
ABM - AIS addressed binary and safety related message
ACK - Acknowledge alarm
AIQ - Query sentence
ALC - Cyclic alert list
!**ABM,x,x,x,xxxxxxxxx,x,xx,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 to 9)
2. Message sentence number (1 to 9)
3. Message sequence identifier (0 to 3)
4. The MMSI of destination AIS unit for the ITU-R M.1371 message (9 digits, null)
5. AIS channel for broadcast of the radio message (0 to 3, null)
6. VDL message number (6 or 12, null), see ITU-R M.1371
7. Encapsulated data (1 to 63 bytes)
8. Number of fill-bits (0 to 5)
$**ACK,xxx,*hh<CR><LF>
1
1. Unique alarm number (identifier) at alarm source (000 to 999)
$**AIQ,ccc,*hh<CR><LF>
1
1. Requested sentence (VSD)
$**ALC,xx,xx,xx,xx,aaa,x.x,x.x,x.x,’’’’’’’’’,*hh<CR><LF>
1 2 3 4 5 6 7 8 9
1. Total number of sentences this message (01 to 16)
2. Sentence number (01 to 16)
3. Sequential message identifier (00 to 99)
4. Number of alert entries (0 to 3)
5. Manufacturer mnemonic code (FEC, null)
6. Alert identifier (0 to 999999)
7. Alert instance (1 to 999999, null)
8. Revision counter (1 to 99)
9. Additional alert entries (see Note)
Note: Alert entry 0 - n: Each alert entry consists of
- Manufacturer Identifier (see ALF Manufactuer)
- Alert Identifier (see ALF Alert identifier)
- Alert instance (see ALF instance)
- Revision counter (see ALF revision counter)
Each entry identifies a certain alert with a certain state.
It is not allowed that an alert entry is split between two ALC sentences.
Alert entry 1
See Note