Konsberg AIS 200, Installation Manual

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Kongsberg AIS 200 Installation Manual, rev. 2 Appendix B - Digital interface IEC 61162-1
10.3 New IEC 61162-1 sentences
This subchapter contains a description of proposed IEC 61162-1 sentences due to AIS.
Reference is made to IEC 61193-2, 2001, annex B2 and IEC/PAS 61162-100.
10.3.1 ABK – Addressed and binary broadcast acknowledgement
The ABK-sentence is generated when a transaction, initiated by reception of an ABM, AIR,
or BBM sentence, is completed or terminated.
This sentence provides information about the success or failure of a requested ABM broadcast
of either ITU-R M.1371 messages 6 or 12. The ABK process utilises the information received
in ITU-R M.1371 messages 7 and 13. Upon reception of either a VHF Data-link message 7 or
13, or the failure of messages 6 or 12, the AIS unit delivers the ABK sentence to the external
application.
This sentence is also used to report to the external application the AIS unit's handling of the
AIR (ITU-R M.1371 message 15) and BBM (ITU-R M.1371 messages 8 and 14) sentences.
The external application initiates an interrogation through the use of the AIR-sentence, or a
broadcast through the use of the BBM sentence. The AIS unit generates an ABK sentence to
report the outcome of the AIR or BBM broadcast process
.
NOTE 1 Identifies the distant addressed AIS unit involved with the acknowledgement. If
more than one MMSI are being addressed (ITU-R M.1371 message 15), the
MMSI of the first distant AIS unit, identified in the message, is the MMSI
reported here. When the Message ID is a general broadcast (ITU-R M.1371
messages 8 or 14), this field is null.
NOTE 2 Indication of VDL channel upon which Message ID 7 or 13 acknowledgement
was received. An "A" indicates reception on channel A. A "B" indicates reception
on channel B. If not available, field is null.
NOTE 3 This indicates to the external application the type of ITU-R M.1371 message that
this ABK sentence is addressing. Also see the message IDs listed in NOTE 4.
NOTE 4 The message sequence number, together with the ITU-R M.1371 message ID and
MMSI of the addressed AIS unit, uniquely identifies a previously received ABM,
AIR, or BBM sentence. Generation of an ABK-sentence makes a sequential
message identifier available for reuse. The ITU-R M.1371 Message ID is used to
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