Nauticast GmbH NAUTICASTA2 用户手册
Page 62 of 80
1001001-2EN A2 Product Manual 2_0
9.3.2 ACA – AIS Regional Channel Assignment Message
$--ACA,x,llll.ll,a,yyyy.yy,a,llll.ll,a,yyyy.yy,a,x,xxxx,x,xxxx,x,x,x,a,x,
hhmmss.ss
$--ACA,x,llll.ll,a,yyyy.yy,a,llll.ll,a,yyyy.yy,a,x,xxxx,x,xxxx,x,x,x,a,x,
hhmmss.ss
Output rate: On event. On request.
Field
Format
Name
Comment
1
--ACA
Sentence Id
Used
2
x
Sequence number
Ignored
3
llll.ll
NE latitude (2 fields)
Used
4
a
5
yyyy.yy
NE longitude (2 fields)
Used
6
a
7
llll.ll
SW latitude (2 fields)
Used
8
a
9
yyyy.yy
SW longitude (2 fields)
Used
10
a
11
x
Transitional zone size
Used
12
xxxx
Channel A
Used
13
x
Channel A bandwidth
Used
14
xxxx
Channel B
Used
15
x
Channel B bandwidth
Used
16
x
Tx/Rx mode
Used
17
x
Power level
Used
18
a
Information source
Ignored
19
x
In use flag
Ignored
20
hhmmss.s
s
Time of In use change
Ignored
9.3.3 ALR – Set alarm state
$--ALR,hhmmss.ss,xxx,A, A,c--c
$--ALR,hhmmss.ss,xxx,A, A,c--c
Output rate: On event, on request, and automatically. Output every 30s for active alarms and every 60s when
no active alarms.
no active alarms.
Field
Format
Name
Comment
1
--ALR
Sentence Id
Used
2
hhmmss.ss
Time of alarm condition change,
UTC
UTC
Used
3
Xxx
Unique alarm number (identifier) at
alarm source
Used
4
A
Alarm condition
A = threshold exceeded
V = not exceeded
V = not exceeded
Used
5
A
Alarm’s acknowledge state A =
acknowledged
acknowledged
V = unacknowledged
Used
6
c--c
Alarm’s description text
Used
9.3.4 EPV – Command or report equipment property value
$--EPV,a,c--c,c--c,x.x,c—c
Output rate: On request.
Output rate: On request.
Field
Format
Name
Comment
1
--EPV
Sentence Id
Used
2
a
Sentence status flag
Used
3
c--c
Destination equipment type
Used
4
c--c
Unique Identifier
Used
5
x.x
Property identifier
Used
6
c--c
Value of property
Used
9.3.5 NAK – Negative acknowledgement
$--NAK,cc,ccc,c--c,x.x,c—c
$--NAK,cc,ccc,c--c,x.x,c—c
Output rate:
On event
Field
Format
Name
Comment
1
--NAK
Sentence Id
Used
2
cc
Talker identifier
Used
3
ccc
Affected sentence formatter
Used
4
c--c
Unique Identifier
Used
5
x.x
Reason
code
for
negative
acknowledgement
Used
6
c--c
Negative acknowledgement’s descriptive
text
text
Used