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Manual configuration

Page 59

The following section documents the proprietary NMEA0183/IEC61162 sentences used for AIS AtoN
configuration and control. These sentence relate mainly to configuration of data capture and integration with
external equipment.

Note 1

The device type is used to identify the manufactured purpose of the device. Choice of the device type identifier is
based upon the designed purpose of the device. It is set into the equipment based upon the primary design of the
device and remains constant even if the user defined talker identifier feature is used (see BCF-sentence). For AIS
device types, use one of the following talker identifier mnemonics:
AB: independent AIS Base Station;
AD: dependent AIS Base Station;
AI: mobile class A or B (see IEC 61993-2 and IEC 62287-1) AIS station;
AL: limited AIS Base Station;
AN: AIS aids to navigation station;
AR: AIS receiving station;
AS: AIS physical shore station;
AT: AIS transmitting station;
AX: AIS simplex repeater station;
DU: duplex repeater station;
UP: microprocessor controller;
U#: (0 ≤ # ≤ 9) user configured talker identifier.

Note 2

The unique identifier is used for system level identification of a station, 15 alphanumeric character maximum. For
an AtoN Station, this is the Real AtoN MMSI number.

Note 3

The data field length may be 32 characters maximum. The length of 32 characters is chosen in order to be
consistent with similar data field lengths in the IEC 61162 standard. When large character lengths are used and the
80 character sentence limit would be exceeded for a single sentence, a series of successive VER sentences
should be used to avoid the problem (using data fields 1 and 2 to ensure the multiple VER sentences are properly
associated by the listener). Null fields can be used for data fields contained in other sentences of the series. Every
VER sentence shall contain the unique identifier.

Note 4

The manufacturer’s serial number for the unit. Note, this “internal” manufacturer’s serial number may or may not
match the physical serial number of the device.

Note 5

Vendor identification.

Note 6

Depending on the number of characters in each data field, it may be necessary to use a “multi-sentence message”
to convey a “VER reply.” The first data field specifies the total number of sentences needed, minimum value 1. The
second data field identifies the sentence number, minimum value 1. 

Note 7

The third data field provides the sequential message identifier. The sequential message identifier provides a
message identification number from 0 to 9 that is sequentially assigned and is incremented for each new
multi-sentence message. The count resets to 0 after 9 is used. For a VER reply requiring multiple sentences, each
sentence of the message contains the same sequential message identification number. It is used to identify the
sentences containing portions of the same VER reply. This allows for the possibility that other sentences might be
interleaved with the VER reply that, taken collectively, contain a single VER reply. This data field may be a null field
for VER replies that fit into one sentence.

Hardware revision (see note 3)

Software revision (see note 3)

Model code (see note 3

Manufacturer serial number (see notes 3 &4)

Unique identifier (see note 2)

Vendor ID (see note 5)

Device type (see note 1)

Sequential message identifier (see note 7)

Sentence number, 1 to 9 (see note 6)

Total number of sentences needed, 1 to 9 (see note 6)