JRC JHS-183 - Page 20

CONFIGURATION AND SPECIFICATIONS
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(2.5) List of sentences and associated data fields
(2.5.1) ABK – Addressed and binary broadcast acknowledgement
$--ABK,xxxxxxxxx,a,x.x,x,x*hh<CR><LF>
Type of acknowledgement
Message Sequence Number
ITU-R M.1371 message ID
AIS channel of reception
MMSI of the addressed destination AIS unit
(2.5.2) ABM – Addressed Binary and safety related Message
!--ABM,x,x,x,xxxxxxxxx,x,x.x,s--s,x*hh<CR><LF>
Number of fill-bits, 0 to 5
Encapsulated data
ITU-R M.1371 message ID (6 or 12)
AIS channel for broadcast of the radio message
The MMSI of destination AIS unit for the ITU-R M.1371 message
Sequential Message identifier, 0 to 3
Sentence number, 1 to 9
Total number of sentences needed to transfer the message, 1 to 9
(2.5.3) ACA – AIS Regional Channel Assignment Message
Time of "in-use" change
In-Use Flag
Information source
Power level control
Tx/Rx mode control
Channel B bandwidth
Channel B
$--ACA,x,llll.ll,a,yyyyy.yy,a,llll.ll,a,yyyyy.yy,a,x,xxxx,x,xxxx,x,x,x,a,x,hhmmss.ss*hh<CR><LF>
Channel A bandwidth
Channel A
Transition Zone Size
Region Southwest corner longitude – E/W
Region Southwest corner latitude – N/S
Region Northeast corner longitude – E/W
Region Northeast corner latitude – N/S
Sequence Number, 0 to 9
(2.5.4) ACK – Acknowledge alarm
$--ACK,xxx*hh<CR><LF>
Local alarm number (identifier) [identification number of alarm source]