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12
DIGITAL INTERFACE (IEC 61162-1)
■ I/O Sentences
D Remote Input and Output sentences
(IEC 61162-1)
Input:
FSI (Set or Query),
Output: FSI (Query receive), DSC (DSC receive), DSE
(DSC receive)
D Remote sentence description
• FSI—Frequency set status or command
$--FSI,xxxxxx,xxxxxx,c,x,a*hh<CR><LF>
1
2
3 4 5
1
Transmitting frequency
2
Receiving frequency
• Query sentence
$--CTQ,FSI*hh<CR><LF>
→ $CTFSI,xxxxxx,xxxxxx,c,x,R*hh<CR><LF>
• DSC – Digital selective calling information
$CTDSC,xx,xxxxxxxxxx,xx,xx,xx,x.x,x.x,xxxxxxxxx,xx,a,a*hh<CR><LF>
1
2
1
Format Specifier (2 digits)
2
Address (10 digits)
3
Category (2 digits or NULL)
Nature of Distress or First Telecommand (2 digits or NULL)
4
5
Type of Communication or Second Telecommand (2 digits)
6
Position or Channel/Frequency (Maximum 16 digits)
• DSE – Expanded Digital Selective Calling
$CTDSE,x,x,a,xxxxxxxxxx,xx,c--c,.........,xx,c--c*hh<CR><LF>
1 2 3
4
Total number of sentences (fixed value)
1
2
Sentence number (fixed value)
3
Query/Reply flag (fixed value A=Automatic)
4
Vessel MMSI (10 digits)
5
Data set '1' (code field, fixed value 00)
*
1
This transceiver outputs only "Data set 1."
91
3 4 5 6 7
8
9 10 11
5
6
7
8
9
3
Mode of operation
4
Power level
Sentence status flag
R=Sentence is a status report of current settings (use for a reply
5
to a query).
C=Sentence is a configuration command to change settings.
7
Time or Tel. No (Maximum 16 digits)
8
MMSI of ship in distress (10 digits or NULL)
9
Nature of Distress (2 digits or NULL)
Acknowledgement (R=Acknowledge request,
10
B=Acknowledgement, S=Neither (end of sequence ))
11 Expansion indicator (E or NULL)
Data set '1' (code field, Enhanced position resolution, Maximum
6
8 characters), NULL
7
Additional data sets*
1
, NULL
8
Data set 'n' (NULL)*
1
9
Data set 'n' (NULL)*
1
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