Konsberg AIS 200, Руководство по установке

Страница: 73 / 119

Kongsberg AIS 200 Installation Manual, rev. 2 Appendix B - Digital interface IEC 61162-1
determine the origin of the message sequence identifier number. The following
table lists the origins by message ID:
ITU-R M.1371
Message ID
Message Sequence Number source
6
sequential message identifier from ABM-sentence,
IEC 61162-1
7
addressed AIS unit's message 7, sequence number,
ITU-R M.1371
8
sequential message identifier from BBM-sentence,
IEC 61162-1
12
sequential message identifier from ABM-sentence,
IEC 61162-1
13
addressed AIS unit's message 13, sequence number,
ITU-R M.1371
14
sequential message identifier from BBM-sentence,
IEC 61162-1
15 no source, field shall be null
NOTE 5
Acknowledgements provided are:
0 = message (6 or 12) successfully received by the addressed AIS
unit,
1 = message (6 or 12) was broadcast, but no acknowledgement by
the distant addressed AIS unit,
2 = message could not be broadcast,
3 = requested broadcast of message (8, 14, or 15) has been
successfully completed.
4 = late reception of a message 7 or 13 acknowledgement
"addressed to own-ship" MMSI – identified by; destination
MMSI, acknowledgement source MMSI, message sequence
identifier, and message type. Late reception means that the AIS
unit did not have an acknowledgement process active for the
acknowledgement that was received.
10.3.2 ABM – Addressed Binary and safety related message
This sentence supports ITU-R M.1371 messages 6 and 12. It provides an external application
with a means to exchange data using an AIS. The message data is defined by the application
only – not the AIS. This message offers great flexibility for implementing system functions
that use the AIS like a communications device. After receiving this sentence, the AIS initiates
a radio broadcast on the VHF Data Link (VDL) of either message 6 or 12. The AIS will make
up to four broadcasts of the message. The actual number will depend on the reception of an
63