Furuno GS-100 Operator's Manual page 125

Sentence description
ACK-Acknowledge alarm
$**ACK,xxx,*hh<CR><LF>
1
1. Local alarm number (identifier)
ACM-Alert Command
$**ACM,hhmmss.ss,aaa,x.x,x.x,c,a*hh<CR><LF>
1 2
1. Time (hh=00 to 23, mm=00 to 59, ss.ss=00.00 to 59.99), null
2. Manufacturer mnemonic code (3 digit alphanumeric code), null
3. Alert identifier (000 to 999999)
4. Alert instance (1 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.)
ACN-Alert command
$**ACN,hhmmss.ss,aaa,x.x,x.x,ca,a*hh<CR><LF>
1 2
1. Time (hh=00 to 23, mm=00 to 59, ss.ss=00.00 to 59.99), null
2. Manufacturer mnemonic code (3 digit alphanumeric code), null
3. Alert identifier (000 to 999999)
4. Alert instance (1 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.)
ALC-Cyclic alert list
$**ALC,xx,xx,xx,x.x, aaa,x.x,x.x,x.x,'''''',*hh<CR><LF>
1 2 3 4
1. Total number of sentences 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 2)
5. Manufacturer mnemonic code (FEC, null)
6. Alert identifier (000 to 999999)
7. Alert instance (1 to 999999)
8. Revision counter (1 to 99)
9. Additional alert entries (same as 5 and 8)
3 4 5 6
3 4 5 6
5 6 7 8 9
APPENDIX 6 DIGITAL INTERFACE (IEC61162-1/2/450)
AP-17