NSR Marine NVR-3000, Operation And Installation Manual

Page: 96 / 105

NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
NVR-3000 OM.E 20210412-02 96
ALC - Cyclic alert list
$--ALC, xx, xx, xx, x.x, aaa, x.x, x.x,x.x, ........, aaa, x.x, x.x, x.x*hh <CR><LF>
| | | | | | | | | | | |
| | | | | | | | | | | |
| | | | | | | | | | +-----------------+----------- 7
| | | | | | | | +--+-------------------------- 6
| | | | +----+----+--+------------------------------ 5
| | | +---------------------------------------------- 4
| | +--------------------------------------------- 3
| +------------------------------------------- 2
+------------------------------------------ 1
1.
Total number of sentences for this message, 01 to 99 (see Note 1)
2. Sentence number, 01 to 99 (see Note 1)
3. Sequential message identifier, 00 to 99 (see Note 2)
4.
Number of alert entries (see Note 3)
5.
Alert entry 1 (see Note 4)
6.
Additional Alert entries (see Note 4)
7. Alert entry n (see Note 4)
NOTE 1: The first field specifies the total number of sentences used for a message, minimum value 1. The second
field identifies the order of this sentence in the message, minimum value 1, These cannot be null fields.
NOTE 2: The sequential message identifier relates all sentences that belong to a group of multiple sentences (i.e.
message). Multiple sentences (see Note 1) with the same sequential message identifier, make up one
message.
NOTE 3: Contains the number of alert entries transported within this sentence.
NOTE 4: Alert entry 0 – n: Each alert entry consists of four fields:
• Manufacturer Identifier (see ALF Manufacturer Identifier)
• Alert Identifier (see ALF Alert Identifier)
• Alert instance (see ALF Alert instance)
• Revision Counter (see ALF Revision Counter)
Each entry identifies a certain alert with a certain state. It is not allowed that an alert entry is split between two
ALC sentences.
HBT
– Heartbeat supervision sentence
$--HBT, x.x, A, x*hh<cr><lf>
| | |
| | +----------------------- 3
| +------------------- 2
+------------------- 1
1.
Configured repeat interval (see Note 1)
2. Equipment status (see Note 2)
3.
Sequential sentence identifier (see Note 3)
NOTE 1: Configured autonomous repeat interval in seconds. This field should be set to NULL in response to a
query if this feature is supported.
NOTE 2: Equipment in normal operation A = yes, V = no
This field can be used can be used to indicate the current equipment status. This could be the result of an
built-in integrity testing function.
NOTE 3: The sequential sentence identifier provides a message identification number from 0 to 9 that is
sequentially assigned and is incremented for each new sentence. The count resets to 0 after 9 is used.