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• ALF—Alert sentence
$--ALF, x, x, x, hhmmss.ss, a, a, a, aaa, x.x, x.x, x.x, x, c---c*hh<CR><LF>
1 2 3
4
5 6 7
1 Total number of ALF sentences for this message (1 to 2)
2 Sentence number (1 to 2)
3 Sequential message identifier (0 to 9)
4 Time of last change (000000.00 to 235959.99, or NULL)
5 Alert category (A=Category A, B*=Category B, C=Category C)
Alert priority (E=Emergency Alarm, A=Alarm, W*=Warning,
6
C*=Caution)
Alert state (A=Active – unacknowledged, S=Active – silenced,
7
N=Active – acknowledged or active, O=Active – responsibility
transferred, U=Rectified – unacknowledged, V=Normal)
The transceiver can output.
*
• ARC—Alert command refused
$--ARC, hhmmss.ss, aaa, x.x, x.x, c*hh<CR><LF>
1
2
3
Release time of the Alert Command Refused (000000.00 to
1
235959.99, or NULL)
2 Manufacture mnemonic code (NULL)
3 Alert Identifier
8
9
10 11 12 13
4 5
DIGITAL INTERFACE (IEC61162-1)
8 Manufacturer mnemonic code (NULL)
9 Alert identifier
10 Alert instance (1 to 999999)
11 Revision counter (1 to 99)
12 Escalation counter (0 to 9)
Alert text (Two sentences are output for an alert. One is "Alert title,"
13
the other is "Alert description.")
4 Alert Instance (1 to 999999)
Refused alert command (A=Acknowledge, Q=Request/Repeat
5
information, O=Responsibility transfer, S=Silence)
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