Communications
80-60100000-02
4–3
line fail, the KBU goes into ‘Backup’ mode and sends the information
through the ISDN network instead. This will generate a
Performing
Backup alert from the Alarm port which is fed into Channel 2. This
channel then dials a KBU at the PCNC site, and sends the alert to it via
the ISDN network. This KBU then passes the message on to PCNC’s
Remote port.
4.2.3 Other Devices
Devices that are not compatible with PCNC can be connected to the
Auxiliary port. This allows you to communicate with them using various
Terminal emulations, as described in Section
4.4
.
4.2.4 Link Disabling
The three Links (Control, Remote, Auxiliary) can be independently
enabled and disabled in PCNC.INI (see Chapter 7
-
Configuring
PCNC.INI). To enable a Link, specify the COM port which connects to
the relevant network. Conversely, if you have no devices that would
connect to a particular port (eg if you are not using remote alarm
reporting), the appropriate Link should be disabled.
If you disable a Link, PCNC cannot receive information from the devices
that would have connected to it, so it cannot process and record their
alert messages. In addition, for the Control and Auxiliary Links, the
relevant Terminal window will be unavailable. The menu option and
toolbar button for the window are then coloured grey, and clicking on
them has no effect.
To show the status of the Remote Link, use the
Help | About...
command. It will show if Remote Logging (and therefore the Link) is
enabled, disabled, or not working correctly.
4.3 Control Terminal
The Control Terminal is connected to local network devices via the
Control Link and the Control Port. It displays all incoming messages,
unprocessed, just as they are received at the Control Port.
It also serves as a dumb terminal to allow you to communicate with
devices on your network. To connect to a network device, click on its
entry in the Network Inspector window and choose the
Direct connect
command from the Network menu or the Network Inspector Speed
