User's Manual

Relay Ports
The relay ports can be used for remote switching of low level signals. The relays can be
activated via software in three ways:
1. The Port Settings default Web page found under the Configuration tab (figure 16)
2. Telnet
3. An event script running on the IPL T CR48
The Port Settings Web page allows you to turn any of the eight relays on or off.
Telnet allows you to send SIS
™
commands (see Programmer’s Guide for the Telnet and
Web Browser, later in this section, to turn the relays on or off directly.
Event scripting allows an event script to turn the relays on or off based on the state of the
four inputs on the IPL T CR48, or any other event script conditions.
States of the relay ports are volatile; if a given relay port is on and power for the unit is
turned off, the state of the port is not remembered. When the unit is powered on, the relay
ports are open and the corresponding LED will be off.
Communication with the Interface
Web Server
The on-board Web server is displayed as a set of default Web pages, which can be accessed
via a Web browser. These pages are the primary means of communication with, and control
through, the IPL T CR48 controller. Web browsers such as Microsoft
®
Internet Explorer
®
(version 5.5 or higher) can be used, but if using Internet Explorer, you must also have
Microsoft Script (version 5.6 or higher).
The PC used to access the Web server and the unit should be connected to your local
intranet or the Internet.
If you have established passwords for the unit, you will be shown a Password window when
your browser accesses the IPL T CR48 (but not when you initially access the Web server since
no passwords have been established). Your level of control over the unit depends on the
password you enter in this Password window. If you enter the administrator password, you
have control of all matters of configuration. If you enter a user password, you are restricted
to control of only A/V devices and viewing status.
IPL T CR48 • Communication and Control 16