10.Appendix
10-7
8) ALC – Cyclic alert list
$--ALC,xx,xx,xx,x.x,aaa,x.x,x.x,x.x,……..,aaa,x.x,x.x,x.x*hh <CR><LF>
1 2 3 4 5 6 7 8 9 10
1: Total number of sentences for this message, 01 to 99 1
2: Sentence number, 01 to 99 1)
3: Sequential message identifier, 00 to 99 2)
4: Number of alert entries 3)
5: Manufacturer mnemonic code
6: Alert identifier
7: Alert instance
8: Revision counter
9: Additional Alert entries
10: Alert entry n 4)
Note;
1) The first field specifies the total number of sentences used for a message, minimum value
1. The second field identifies the order of this sentence in the message, minimum value 1.
These cannot be null fields.
2) The sequential message identifier relates all sentences that belong to a group of multiple
sentences (i.e.message). Multiple sentences with the same sequential message identifier,
make up onemessage.
3) Contains the number of alert entries transported within this sentence.
4) Alert entry 0 – n: Each alert entry consists of four fields:
• Manufacturer Identifier (see ALF Manufacturer Identifier)
• Alert Identifier (see ALF Alert Identifier)
• Alert instance (see ALF Alert 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.
9) 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 8 9 10 11 12 13
1: Total number of ALF sentences for this message, 1 to 2 1)
2: Sentence number, 1 to 2 1)
3: Sequential message identifier, 0 to 9 2)
4: Time of last change 3)
5: Alert category, A, B or C 4)
6: Alert priority, E, A, W or C 5)
7: Alert state, A, S, N, O, U or V 6)
8: Manufacturer mnemonic code 7)
9: Alert identifier 8)
10: Alert instance, 1 to 999999 9)
11: Revision counter, 1 to 99 10)
12: Escalation counter, 0 to 9 11)
13: Alert text 12)
Note;
1) The first field specifies the total number of sentences used for a message, minimum value 1.
The second field identifies the order of this sentence in the message, minimum value 1.
These cannot be null fields. When the sentence number is 2, the following Alert category,
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