NSR Marine NVR-3000, Operation And Installation Manual

Page: 97 / 105

NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
NVR-3000 OM.E 20210412-02 97
ARC - Alert command refused
$--ARC, hhmmss.ss, aaa, x.x, x.x, c*hh <CR><LF>
| | | | |
| | | | |
| | | | +------------------------------ 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. Refused alert command, A, Q,O or S (see Note 5)
NOTE 1: Release time of the Alert Command Refused. (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 a 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 a 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 and 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: Refused Alert Command: Indicates refused “Alert command” of corresponding ACN sentence. This
should not be a null field.
acknowledge:
A
request / repeat information: Q
responsibility transfer:
O
silence: S