Extron electronic SFI244 Series Communication and Control, cont’d, Ports Overview, Flex I/O ports

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Communication and Control, cont’d

Ports Overview

Flex I/O ports

Extron Flex I/O ports are configurable 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 Flex I/O ports are tied to a common ground, but can be individually configured to operate in one of three different modes:

•Digital Input

•Digital Output

•Analog Input

These ports can be configured by using the default Web pages of the IPL T Web Server (see figure 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 Command/Response Table for Simple Instruction Set commands in this chapter) via Telnet, scripts or Web pages.

Figure 4-1 — Default Web page for Flex I/O

+30V	+5V
	2K
	SW2
	I/O
24K	SW1

GND

Figure 4-2 — Equivalent Flex I/O port circuit

Digital input

When a Flex I/O port is configured 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.

+30V	+5V
	2K
	SW2
	I/O
24K	SW1

GND

Figure 4-3 — equivalent digital input circuit

The Digital Input mode has two configurable options:

1.The ability to turn on an internal pull-up resistor to +5VDC (shown below as SW2)

2.Adjustable detection threshold voltages

The default threshold voltages follow standard TTL logic:

a voltage below 0.8VDC is measured as logic low, and a voltage above 2.0VDC is measured as logic high. Using an adjustable threshold, the integrator can select the proper high and low voltages for the installation.

In the figure below, the SW2 switch is turned closed, activating the +5VDC and 2K pull-up resistor.

+30V+5V

2K

SW2

I/O

24K

GND

Figure 4-4 — Sample wiring for a digital input reading an external pushbutton switch

4-2

IPL T SF24 and IPL T SFI244 • Communication and Control

IPL T SF24 and IPL T SFI244 • Communication and Control

4-3

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Contents USA IP Link ToolsExtron’s Warranty PrecautionsFCC Class a Notice Under Desk Projector Mount Quick Start Guide IPL T SF24 and SFI244Table of Contents Table of Contents, cont’d Introduction OneIPL T SF24 and SFI244 About the IPL T SF24 and SFI244 Interfaces FeaturesIntroduction About this ManualIntroduction, cont’d Installation and OperationEasily configured and controlled TwoMounting the IPL T Interface Installation and OperationInstallation Overview IPL T SF24 and IPL T SFI244 Installation and OperationFurniture or projector mounting Installation and Operation, cont’dRear Panel Features and Cabling PowerSerial communication Ethernet/LANOperation Front panel indicatorsIdentification Resetting the unit Three Connection and ConfigurationEthernet connection Connection and Configuration, cont’dConnecting the Hardware Serial connection Flex I/O connection Configuring the Hardware PC configuration IPL T interface configurationArp -s 10.13.170.15 00-05-A6-00-0A-90 Configuring the IPL T using direct PC connectionPing Communication and Control Connection and Configuration, cont’dFirmware upgrades FourDigital input Communication and Control, cont’dPorts Overview Flex I/O portsDigital output Bidirectional serial control interface portsAnalog input Web server Accessing and using the Web server Logon and system statusEstablishing or changing system or port settings Communication with the InterfaceControlling IR devices or sending IR commands SFI244 only 10 Web server System Settings screenCommunication and Control, cont’d Setting and changing your passwordsEditing and adding e-mail alerts Managing files Sending an e-mail alert through TelnetEsc 4 SM Upgrading the firmwareCreating a driver with the IR Learner software IR Learning SFI244 onlyProgrammer’s Guide for the Telnet and Web browser Using the command/response tableSymbol definitions Copyright information Password informationFlex I/O Data port 28 = Commands that may give E28 file not foundError responses Bidirectional Serial Data portIR/Serial Data port SFI244 only IP Setup CommandsFirmware Version/Part Number/Information Mail File CommandsRe-map port designations Web Browser SpecificControl Reset ZAP/Erase CommandsCommunication and Control, cont’d Customization Server side includesCode examples Query stringExample 26c Browser view 28a Html source code using a query string 30b Browser view Href=index.html?cmd=W1*1*15*0irPlay/aReserved characters URL encodingUnsafe characters Telnet Port Direct port access ports 2001 throughCommunication and Control, cont’d Device Control Custom Web pagesData connections TroubleshootingPower connections Port redirectAAppendix a Specifications, Part Numbers AccessoriesSpecifications Included parts AppendixBBGlossary PartsGlossary GlossaryGlossary, cont’d