Furuno FAR 3220, Installation Manual

Page: 145 / 245

APPX. 3 DIGITAL INTERFACE
AP-7
ACN (ACM) - Alert command
ALC - Cyclic alert list
ALF - Alert sentence
ALR - Set alarm state
$--ACN,hhmmss.ss,aaa,x.x,x.x,ca,a*hh<CR><LF>
$--ACM,hhmmss.ss,aaa,x.x,x.x,ca,a*hh<CR><LF>
1 2 3 4 5 6
1. Time (No use)
2. Manufacturer mnemonic code (3 digit alphanumeric code, null)
3. Alert identifier (0, 1 to 999 or 10000 to 9999999)
4. Alert instance (0 to 999999, null)
5. Alert command (A=ACK from ext. equipment, Q=Request from ext. equipment, O=Responsibility transfer,
S=Silence from ext. equipment)
6. Sentence status flag (C should not be null field. Sentence without C is not a command.)
Information about the use of ACN vs ACM
The alert command sentence formatter ACM is defined in IEC 61924-2 Ed. 1. After Ed. 1 was released, the ACM is
used by other criteria and the IEC technical corrigendum adopted the sentence formatter ACN to replace the ACM.
However, equipment released before the adoption of the ACN may use ACM. This equipment uses both ACN and
ACM.
$--ALC,xx,xx,xx,x.x, aaa,x.x,x.x,x.x,’’’’’’’’’,*hh<CR><LF>
1 2 3 4 5 6 7 8 9
1. Total number of sentences for this message (01 to 99)
2. Sentence number (01 to 99)
3. Sequential message identifier (00 to 99)
4. Number of alert entries (0 to 3)
5. Manufacturer mnemonic code (FEC, null)
6. Alert identifier (1 to 999 or 10000 to 9999999)
7. Alert instance (1 to 999999, null)
8. Revision counter (1 to 99)
9. Additional alert entries (see Note)
Note: Alert entry 0 to n: Each alert entry consists of
- Manufacturer Identifier (see ALF Manufactuer)
- Alert Identifier (see ALF Alert identifier)
- Alert instance (see ALF instance)
- Revision counter (see ALF revision counter)
Each entry identifies a certain alert with a certain state.
It is not allowed that an alert entry is split between two ALC sentences.
Alert entry 1
See Note
$--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 8 9 10 11 12 13
1. Total number of ALF sentences for this message (1, 2)
2. Sentence number (1, 2)
3. Sequential message identifier (0 to 9)
4. Time of last change (hh=00 to 23, mm=00 to 59, ss.ss=00.00 to 59.99)
5. Alert category (A=Alert category A, B=Alert category B, C=Alert category C, 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 (1 to 999 or 10000 to 9999999)
10. Alert instance (1 to 999999, null)
11. Revision counter (1 to 99)
12. Escalation counter (0 to 2)
13. Alert text (max. 18 characters)
$--ALR,hhmmss.ss,xxx,A,A,c—c,*hh<CR><LF>
1 2 3 4 5
1. Time of alarm condition change, UTC (000000.00 to 235959.99)
2. Unique alarm number (identifier) at alarm source (000 to 999, null)
3. Alarm condition (A=threshold exceeded, V=not exceeded)
4. Alarm acknowledge state (A=acknowledged, V=not acknowledged)
5. Alarm description text (alphanumeric characters, max. 32)