Samyung ENC SI-30A, Инструкция по эксплуатации

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6-3-7 ALR – Alarm condition and status
This sentence is sent by the transponder to all presentation ports order to report an alarm
condition on a device. It identifies the source of the alarm, whether it has been
acknowledged or not and the time at which the condition changed.
$--ALR ,hhmmss.ss ,xxx ,A ,A ,c--c *hh<CR><LF>
① ② ③ ④ ⑤
① time of condition change ② alarm source
③ alarm condition ④ acknowledge state
⑤ descriptive text
This sentence is sent by the transponder whenever a new alarm is raised or its condition
changes state. It is also sent periodically even when there are no active alarms In order to
provide a positive indication of the current status of each alarm.
6-3-8 BBM - AIS broadcast binary message
The BBM sentence allows an external device to instruct the transponder to broadcast a block
of binary data in an M.1371 binary broadcast message (type 8) or a safety related broadcast
message (type 14).
!--BBM ,x ,x ,x ,x ,x.x ,s—s ,x *hh<CR><LF>
① ② ③ ④ ⑤ ⑥ ⑦
① total number of sentences needed to transfer message
② sentence number
③ sequential message identifier
④ AIS channel for broadcast of the radio message
⑤ M.1371 message ID
⑥ encapsulated data
⑦ number of fill-bits
When the transponder receives one or more BBM sentences from an external device, is
deencapsulates the encoded data and re-assembles an M.1371 message of type 8 or 14 and
then 34 Issue 1 AIS Installation Manual transmits it over the VDL (if possible). It then sends
an ABK sentence back to the requesting device to indicate whether the transmission of the
message s ucceeded or failed.
6-3-9 DTM – Datum reference
Local geodetic datum and datum offsets from a reference datum.
$--DTM ,ccc ,a ,x.x,a ,x.x,a ,x.x ,ccc *hh<CR><LF>
① ② ③ ④ ⑤ ⑥
① Local datum ② Local datum subdivision code
③ Lat offset, min, N/S ④ Lon offset, min, E/W