Furuno FCR-28x9 Manual De Usuario

Digital Interface

ABK, ACK, ALR, CUR, DBT, DPT, DTM, GGA, GLL, GNS, HDT, MTW, MWV, RMC, THS, VBW, 
VDM, VDO, VDR, VHW, VTG, ZDA

ABM, ACK, ALR, BBM, EVE, OSD, RSD, TLB, TTD, TTM, VSD

Data is received in serial asynchronous form in accordance with the standard referenced in IEC 
61162-2.

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

ABK - UAIS Addressed and binary broadcast acknowledgement

ACK - Acknowledge alarm

D0    D1     D2    D3     D4     D5     D6    D7

Start
bit

Stop
bit

Data bits

$**ABK,xxxxxxxxx,x,x.x,x,x,*hh<CR><LF>

                    1       2  3  4  5

1. MMSI of the addressed AIS unit (9 digits)
2. AIS channel of reception (No use)
3. Message ID (6, 8, 12, 14)
4. Message sequence number (0 - 9)
5. Type of acknowledgement (See below)

1 = message was broadcast (6 or 12), but not ACK by addressed AIS unit

   2 = message could not be broadcast (quantity of encapsulated data exceeds five slots)
   3 = requested broadcast of message (8, 14 or 15) has been successfully completed
   4 = late reception of message (7 or 13) ACK 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.