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14
DIGITAL INTERFACE (IEC61162-1)
■ I/O Sentences (Continued)
D Output sentences (IEC61162-1)
DSC and DSE
D Output interval
DSC, DSE: Irregular output (Output immediately after receiving a DSC call.)
D Output sentence description
• DSC—Digital selective calling information
$CDDSC, xx, xxxxxxxxxx, xx, xx, xx, x.x, x.x, xxxxxxxxxx, xx, a, a*hh<CR><LF>
1
1 Format specifier (2 digits)
2 Address (10 digits)
3 Category (2 digits or NULL)
4 Nature of distress or first telecommand (2 digits or NULL)
5 Type of communication or second telecommand (2 digits)
6 Position or Channel/frequency (Maximum 16 digits)
• DSE—Expanded digital selective calling
$CDDSE, x, x, a, xxxxxxxxxx, xx, c--c, .........., xx, c--c*hh<CR><LF>
1 2 3
1 Total number of sentences (fixed value)
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)
This transceiver outputs only "Data set 1."
*
106
2
3
4 5
6
7
4
5
6
7
8
8
9 10 11
7 Time or Telephone Number (Maximum 16 digits)
8 MMSI of ship in distress (10 digits or NULL)
9 Nature of distress (2 digits or NULL)
Acknowledgment (R=Acknowledge request, B=Acknowledgment,
10
S=Neither (end of sequence))
11 Expansion indicator (E or NULL)
9
Data set '1' (code field, Enhanced position resolution, Maximum 8
6
characters), NULL
7 Additional data sets*, NULL
8 Data set 'n' (NULL)*
9 Data set 'n' (NULL)*
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