NSR Marine NVR-3000, Руководство по эксплуатации и установке

Страница: 89 / 105

NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
NVR-3000 OM.E 20210412-02 89
APPENDIX 4 SENTENCE DISCRIPTION
I/O Sentences
Input sentences (IEC 61162-1)
ACN, GGA, ZDA, GNS, RMC
Output sentence (IEC 61162-1)
ALF, ALC, HBT, ARC
ACN
– Alert command
$--ACN,hhmmss.ss,aaa,x.x,x.x,c,a*hh <CR><LF>
| | | | | | |
| | | | | | +------------------------------------- 7
| | | | | +--------------------------------- 6
| | | | +---------------------------- 5
| | | +-------------------------- 4
| | +------------------------- 3
| +----------------------- 2
+---------------------------- 1
1. Time (see Note 1)
2. Manufacturer mnemonic code (see Note 2)
3. Alert Identifier (see Note 3)
4. Alert Instance, 1 to 999999 (see Note 4)
5. Alert command, A, Q, O or S (see Note 5)
6. Sentence status flag (see Note 6)
7. Checksum (
same as below
)
NOTE 1: Release time of the alert command. (e.g. for VDR purposes), optional can be a null field. Sender is
allowed to use all alternatives defined in Alert Description Table. Receiver is allowed to ignore content
of this field. If receiver does not ignore this field it should support all alternatives defined in Alert
Description Table.
NOTE 2: Used for proprietary alerts defined by the manufacturer. For standardized alerts this should be a null
field.
NOTE 3: The alert identifier is unique within a single alert source. The alert identifier is a variable length integer
field of maximum 7-digit integer. It identifies the type of the alert e.g. a “lost target” alert. Standardized
alerts use unique alert identifiers described in equipment standards. Number range 10000-9999999 is
reserved for proprietary alerts. Alert Identifier examples:
“001”, “2456789”, “245”.
NOTE 4: The alert instance identifies the current instance of an alert to distinguish alerts of the same type (Alert
identifier) and from the same source (e.g. dangerous target). Alert instance is maximum 6-digit integer
from 1 to 999999. The number of alert instance can be freely defined by the manufacturer as long as it
is unique for one type of alert (alert identifier). It is not permitted to modify the alert instance within a
life cycle of a distributed alert (from ‘active & unacknowledged’ state until ‘normal’ state is reached). It
can be also a null field, when there is only one alert of that type.
NOTE 5: This should not be null field
acknowledge : A
request / repeat information : Q
responsibility transfer:
O
silence : S
NOTE 6:
This field should be “C” and should not be null field. This field indicates a command. A sentence
without “C” is not a command.