Furuno BR-500 Operator's Manual page 59

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
1. Total number of ALF sentences this message (1, 2)
2. Sentence number (1, 2)
3. Sequential message identifier (0 to 9)
4. Time of last change (null)
5. Alert category (A=Alert category A, B=Alert category B), null
6. Alert priority (A=Alarm, W=Warning, C=Caution), null when #2 is 2.
7. Alert state (V=Not ACKed, S=Silence, A=ACked, O/U=Resolved, Not ACKed,
N=Normal state), null when #2 is 2.
8. Manufacturer mnemonic code (FEC, null)
9. Alert identifier (000 to 999999)
250 - Malfunction
220002 - Failure: AC
220004 - 2nd Stage Alarm
220950 - BAM COM Error
10. Alert instance (null)
11. Revision counter (1 to 99)
12. Escalation counter (0 to 9)
13. Alert text (max. 16 characters for the 1st sentence, maximum length of the
field for the 2nd sentence later)
ARC - Alert command refused
$**ARC,hhmmss.ss,aaa,x.x,x.x,c*hh<CR><LF>
1 2
1. (null)
2. Used for proprietary alerts, defined by the manufacturer (FEC, null)
3. The alert identifier (000 to 999999)
250 - Malfunction
220002 - Failure: AC
220004 - 2nd Stage Alarm
220950 - BAM COM Error
4. The alert instance (Null)
5. Refused Alert Command(A, Q, O, S)
A=acknowledge: A
Q=request/repeat information
O=responsibility transfer
S=silence
5 6 7 8 9 10 11 12 13
220001 - Failure: DC
220003 - 1st Stage Alarm
220005 - 3rd Stage Alarm
3 4 5
220001 - Failure: DC
220003 - 1st Stage Alarm
220005 - 3rd Stage Alarm
4. INSTALLATION
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