CBU-NM
User Manual
ii
80-60100000-02
8–2
information about your network is not lost if the file is accidentally
damaged or deleted.
8.2.1 Alert Processing
Each time an alert message is received, PCNC looks up the Poll number
of the device that sent it and extracts all its details from the database.
PCNC can then decode the message and display it as an alarm. The
complete process is described in Chapter 3 - Alarms and Filters.
8.2.2 Communicating with the Network
The details of Direct Connection to the Network are dealt with in
Section
4.5
- Connecting to Network Devices. Here, it will be sufficient
to introduce the significance of the Network Database in this operation.
Since network devices have unique names, rather than meaningless Poll
numbers, it is much easier to connect to them using PCNC than using a
dumb Terminal. All you have to do is look for the name of the device
you want in the Network Inspector window, click on it, and choose the
Direct connect command. PCNC will then automatically make the
connection, using the Poll number stored in the database. You can then
send commands using the Control Terminal, which will display the name
of the polled device in its Title Bar.
PCNC also allows you to talk to remote KBU64 devices as if they were
local, by dialling them from KBUs defined in the ‘Talkwire List’. Again,
PCNC will connect automatically from the Network Inspector window.
See section
4.5.2
- Remote Direct Connection for more details.
8.3 The Network Inspector window
The Network Inspector window is used to modify or examine the Network
Database. When the program is first installed, the window shows that
the network has no devices (see section
8.4
- Defining the Database).
Every device defined in the database occupies one or more lines in the
Network Inspector window. Each line combines a stored device
description with current status information, allowing you to tell at a
glance the current state of the network. These entries can be sorted by
one or more of the following categories: Poll number, Device name,
Device type, Current status and ‘Alarmed’ (which means it has an
unacknowledged alarm).
