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Appendix A | V5035 Operator and Installation Manual
ACA – AIS Channel Assignment Message
An AIS device can receive regional channel management informa-
tion
$--ABK,xxxxxxxxx,x,x.x,x,x*hh<CR><LF>
Field No. Format Description Remark
1 x Sequence Number
2 llll.ll,a
Region northeast corner latitude – N/S
3 yyyyy.yy,a Region northeast corner longitude – E/W
4 llll.ll,a Region southwest corner latitude – N/S
5 yyyyy.yy,a Region southwest corner longitude – E/W
6 x Transition zone size
7 xxxx Channel A
8 x Channel A bandwidth
9 xxxx Channel B
10 x Channel B bandwidth
11 x Tx/Rx mode control
12 x Power level control
13 a Information source
14 x In-use flag
15 hhmmss.ss Time of “in use” change
ALR – Set Alarm State
Local alarm condition and status. This sentence is used to report an
alarm condition on a device and its current state of acknowledge-
ment.
$--ALR,hhmmss.ss,xxx,A, A,c--c*hh<CR><LF>
Field No. Format Description Remark
1 hhmmss.ss Time of alarm condition change, UTC
2 xxx
Unique alarm number (identifier) at alarm source
3 A
Alarm condition,
A = threshold exceeded, V = not exceeded
4 Ax
Alarm’s acknowledge state,
A = acknowledged, V = unacknowledged
5 c--c Alarm’s description text
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