User`s manual

IPL T SF Series • Communication and Control
Communication and Control, cont’d
Ports Overview
Flex I/O ports
Extron ex I/O ports are congurable input or output ports
designed to provide connectivity to various devices such as
motion detectors, alarms, lights, LEDs, buttons, photo (light)
sensors, temperature sensors, relays, etc. All ex I/O ports are
tied to a common ground, but can be individually congured to
operate in one of three different modes:
• Digital Input
• Digital Output
• Analog Input
These ports can be congured by using the default Web pages
of the IPL T SF Web Server (see gure 4-1 below; also see
“Establishing or changing system or port settings” later in this
chapter) or by dynamically using the Simple Instruction Set
™
commands (see the “Programmer’s Guide for the Telnet and
Web Browser” in this chapter) via Telnet, scripts or Web pages.
Figure 4-1 — Default Web page for flex I/O
Digital input
When a ex I/O port is congured as a digital input, the port
is set to measure two states: 1 or 0; On or Off; high or low. A
closed circuit = a logic 1 and an open circuit = a logic 0.
4-2