Classification
Page
Operation, technical
and maintenance
manual
Unclassified
10 (14)
Date
2008-01-11
Document No.
Issue
CNSS-05-1187
E
_______________________________________________________________________________________________________________________________________________
This document and attachments shall remain our property. They may not without our written consent, either in their original state or with any changes, be copied or reproduced,
disclosed to or delivered to anyone unauthorized nor used for other purposes than what has been confirmed by C.N.S. Systems AB in writing.
BL0004E
5.3.3
Maintenance mode
When the VDL 6000/FASS is in maintenance mode, it is possible to perform configuration activities and update of
software.
The VDL 6000/FASS is operational but services are not provided.
Maintenance mode is announced via the Monitor and control tool.
5.3.4
Service modes
In service mode, the VDL 6000/FASS is operating and providing one or more of the implemented services.
When the VDL 6000/FASS is in service mode, the Monitoring and control subsystem will monitor the status and function
of all subsystems and provide monitoring data via the keyboard/display or by local or remote access.
5.3.4.1
Normal mode
When the VDL 6000/FASS is in normal mode, it is fully operational and provides all requested services.
5.3.4.2
Downgraded mode
When the VDL 6000/FASS is in downgraded mode, at least one of the implemented services is disabled.
5.3.4.3
Degraded mode
When the VDL 6000/FASS is in degraded mode, a failure condition has been detected in either a service and/or subsystem.
5.4
Sentences
Following sentences are supported by the VDL 6000/FASS. X indicates input to, or output from, the VDL 6000/FASS. Q
indicates that the sentence may be externally requested using th IEC 61162-1 query sentences.
Table 5-2, VDL 6000/FASS input / output sentences
Sentence Input
independent
Input
dependent
Output
independent
Output
dependent
Description
ABK
X
Addressed and binary broadcast
acknowledgement
ABM
X
Addressed binary ad safety related
message
ACA
X
Q
AIS regional channel assignment
message
ACM
X
Preparation and initiation of an
AIS Base Station addressed
channel message (VDL Message
22)
ACK
X
X
Acknowledge alarm
