Log Strings
Interfacing Voyage Data Recorder Systems, AutroSafe Interactive Fire-Alarm System, 116-P-BSL336/EE, RevA 2007-01-25,
Autronica Fire and Security AS
Page 29
8.1.3 ALA —System Faults
ALA strings report faults at system level; in the case of BSL-336 – a
standalone protocol converter, the only conditions that are reported
are related to AutroSafe communication.
$FRALA, hhmmss, aa, aa, xx, xxx, a, a, c-cc
Field
no
Data form
Field name
Definition
0 $FRALA Header
1
hhmmss
Event time
The time is based on the AutroSafe
clock.
If the BSL-336 has had no
communication with AutroSafe, the clock
starts from 00:00:00.
2
aa
System indicator
"FR" (the BSL-336 reports a problem
on behalf of itself, the "FR"
talker)
3
aa
Sub-system
"OT" for "other".
4
xx
Number of equipment
00
5
xxx
Number of alarm source
901 – AutroSafe communication fault
6
a
Alarm condition
N – Normal state (OK)
H – Alarm state (fault)
7
a
Alarm's ACK state
V –
Not acknowledged
8
c—c
Alarm's description text
The description text tells if this is
"fault" or "OK"
Example:
$FRALA,143935,FR,OT,00,901,H,V,Syst Fault : AutroSafe comm. FAULT*01
$FRALA,143955,FR,OT,00,901,N,V,Syst Fault : AutroSafe comm. OK*4F
8.1.4 DOR — Door Status Detection
The DOR string is used to identify events reported by AutroSafe BN-
320/2 Door-Control Units. BN-320/2 has two status outputs — Open
and Closed, which indicate the position of the door. The unit can be
used either as a monitoring and control device, where it monitors door
position and triggers door release, or as a simple monitoring device
(for example, for watertight and hull doors); in the latter case, it is
necessary that the release relay be activated when external door
release systems are activated, so that faults caused by non-closing
doors are logged to the VDR.
8.1.4.1 Door Status
BN-320/2 has status Normal, if the door is
not activated
by AutroSafe,
and the door position is
Open
. Periodic status reports include all doors
with status Not Normal.
