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APPENDIX III SENTENCE DISCRIPTION
ACN – Alert command
$--ACN,hhmmss.ss,aaa,x.x,x.x,c,a*hh <CR><LF>
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+---------------------------- 1
1. Time
2. Manufacturer mnemonic code
3. Alert Identifier
4. Alert Instance, 1 to 999999
5. Alert command, A, Q, O or S
6. Sentence status flag
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>
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+--------------------------------------------- 3
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+------------------------------------------- 2
+------------------------------------------ 1
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
5. Alert entry 1
6. Additional Alert entries
7. Alert entry n
Each entry identifies a certain alert with a certain state. It is not allowed that an alert entry is
split between two ALC sentences.
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+---------------------------- 5
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+-------------------------- 4
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+------------------------- 3
+----------------------- 2
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+-----+----+---+------------------------------ 5
+---------------------------------------------- 4
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+---------------+----------- 7
+--+-------------------------- 6
45
NGR-3000 UM.E 20230221-08
NGR-3000 USER MANUAL
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