AP-2
APPENDIX 2 DIGITAL INTERFACE
Digital Interface
• Input sentence
ABK, ACK, ACN, ALR, BWC, BWR, CUR, DBK*
1
, DBS*
1
, DBT, DDC, DPT, DTM, GGA, GLL,
GNS, HBT, HDG*
2
, HDM*
2
, HDT*
1
, MTW, MWV, OSD, RAQ, RMB, RMC, ROT, RTE, THS,
TLL*
3
, TTM*
2
, VBW, VDM, VDO, VDR, VHW, VSD, VTG, VWR*
1
, VWT*
1
, WPL, ZDA
• Output sentences
ABM, ACK, AIQ, ALC, ALF, ALR, ARC, BBM, DDC, EVE, HBT, OSD, RSD, TLB, TLL*
3
, TTD,
TTM, VSD
*
1
: For retrofit.
*
2
: For C-type radars.
*
3
: NOT for IMO/A-type radars installed with software version “01.**”.
Data reception
Data is received in serial asynchronous form in accordance with the standard referenced in IEC
61162-2 or IEC 61162-1 Ed.5.
The following parameters are used:
Baud rate: 38,400 bps (HDT, THS, !AIVDM, !AIVDO, !AIABK, $AIALR). The baud rate of all other
sentences is 4800 bps
Data bits: 8 (D7 = 0), Parity: none, Stop bits: 1
Data Sentences
Input sentences
ABK - AIS addressed and binary broadcast acknowledgement
D0 D1 D2 D3 D4 D5 D6 D7
Data bits
Start
bit
Stop
bit
$**ABK,xxxxxxxxx,x,x.x,x,x,*hh<CR><LF>
1 2 3 4 5
1. MMSI of the addressed AIS unit (No use)
2. AIS channel of reception (No use)
3. Message ID (No use)
4. Message sequence number (No use)
5. Type of acknowledgement (See below.)
0 = Message (6 or 12) sucessfully received by the addressed AIS unit
1 = Message (6 or 12) was broadcast, but no acknowledgement by the addressed AIS unit
2 = Message could not be broadcast (i.e. quantity of encapsulated data exceeds five slots)
3 = Requested broadcast of message (8, 14, or 15) has been successfully completed.
4 = Late reception of a message 7 or 13 acknowledgement that was addressed to this AIS
unit (own-ship) and referenced a valid transaction.
5 = Message has been read and acknowledged on a display unit.
To Next Page
Loading...
