Furuno BR-500 Operator's Manual page 60

4. INSTALLATION
ALR - Alarm sentence
$BNALR, hhmmss.ss,XXX,A,A,c-c,*hh<CR><LF>
- hhmmss.ss: This part may be left blank because BNWAS does not include UTC time
information.
Alarm mode: [Legacy]
-xxx: Designation of source of alarm or source of reset command.
000: Watch alarm normal
010: Communication failure
011: Power failure AC
012: Power failure DC
-A: A=Dormant period exceeded, V=Dormant period not exceeded
-A: A=Alarm acknowledged, V=Alarm unacknowledged
-c--c: BNWAS mode: c1, c2, c3
c1=AUTO, MAN or OFF, c2=Dormant period in min. (03-12),
c3=Alarm stage: 1, 2 or 3
Alarm mode: [ALERTI/F1]
-xxx: Designation of source of alarm or source of reset command.
Null: routine transmission(SYSTEM)
000: Watch alarm normal(BNWAS)
001: Power failure DC
002: Power failure AC
250: Malfunction (Communication failure)
-A: A=Dormant period exceeded (BNWAS) or Threshold exceeded (SYSTEM)
V=Dormant period not exceeded (BNWAS) or Threshold not exceeded (SYSTEM)
-A: A=Alarm acknowledged, V=Alarm unacknowledged
-c--c: BNWAS mode: c1, c2, c3
c1=AUTO, MAN or OFF, c2=Dormant period in min. (03-12),
c3=Alarm stage: 1, 2 or 3
SYSTEM mode:text (Null, DC Power Failure, AC Power Failure, COM ERR with
Processor Unit)
Alarm mode: [ALERTI/F2]
-xxx: Designation of source of alarm or source of reset command.
000: Watch alarm normal
-A: A=Dormant period exceeded, V=Dormant period not exceeded
-A: A=Alarm acknowledged, V=Alarm unacknowledged
-c--c: BNWAS mode: c1, c2, c3
c1=AUTO, MAN or OFF, c2=Dormant period in min. (03-12),
c3=Alarm stage: 1, 2 or 3
Example:
$BNALR,,000,A,V,C1=AUT;C2=03;C3=1*hh<CR><LF>
HBT - Heartbeat supervision sentence
$**HBT,x.x,A,x*hh<CR><LF>
1 2 3
1. Configured repeat interval (50(S))
2. Equipment status (A=Normal V=System fail)
3. Sequential sequence identifier (0 to 9)
Sentence
PFEC,
BNwtr
BNmbo
4-28
Proprietary Output Sentences
FEC P sentences
Present stage progress of watch alarm timer and setting/remaining time
of present stage.
Backup officer and captain backup status
Sentence construction