Extron electronic SW DVI A Series SIS Configuration and Control, Host-to-Switcher Communications

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SIS Configuration and Control

The SW2/SW4 can be remotely set up and controlled via a host computer or other device (such as a control system), attached to the rear panel Remote/Auto-SW port, using the Extron Simple Instruction Set (SIS) commands. See “Wiring the Remote/Autoswitching Connector” in chapter 2, “Installation,” for information on connecting to this port.

Host-to-Switcher Communications

SIS commands consist of one or more characters per field. No special characters are required to begin or end a command sequence. You can enter these commands from your computer using a communication software program such as HyperTerminal. When the switcher determines that a command is valid, it executes the command and sends a response to the host device.

Most responses from the SW2/SW4 to the host computer end with a carriage return and a line feed (CR/LF = ]), which signals the end of the response character string. A string is one or more characters.

Switcher-initiated messages

When a local event such as a front panel selection takes place, the switcher responds by sending a message to the host, indicating what selection was entered. No response is required from the host. The following SW2/SW4-initiated message is displayed:

(C)Copyright 2007, Extron Electronics DVI Switcher Series, Vx.xx, 60-840-xx

The switcher sends the copyright message when it first powers on. Vx.xx is the firmware version number.

NThis message is displayed only at power-up.

Error responses

If the switcher is unable to execute a command it receives because the command is invalid or contains invalid parameters, the SW2/SW4 returns an error response to the host. Error response codes and their descriptions are as follows:

E01 – Invalid input channel number (out of range)

E06 – Invalid input selection during autoswitch

E10 – Invalid command

E13 – Invalid value (out of range)

Using the Command/Response Table

The command/response table on the following pages lists valid ASCII and hexadecimal command codes, the switcher’s responses to the host, and a description of the command’s function or the results of executing the command.

The ASCII to HEX conversion table below is for use with the command/response table.

ASCII to HEX Conversion Table

Symbol definitions

] = CR/LF (carriage return/line feed) (hex 0D 0A)

}= Soft carriage return (no line feed)

• = Space E= Escape key

X!

=

Input number

 

 

0 through the maximum number of inputs (2 or 4)

 

 

0

= output mute

X@

=

On/off and signal status

 

 

0

= Off/signal not present

 

 

1

= On/signal present

X#

=

Firmware version (to the second decimal place

NUnless otherwise indicated, commands are not case sensitive.

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SW DVI A Series • SIS Configuration and Control

SW DVI A Series • SIS Configuration and Control

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Contents DVI and Audio Switchers User’s ManualPrecautions Extron’s Warranty安全须知 中文 FCC Class a NoticeTable of Contents SW DVI a Series Table of Contents, cont’dIntroduction Features IntroductionAbout this Manual About the SW DVI a SeriesExtron InstallationIntroduction, cont’d Application Diagram Installation Installation OverviewMounting the SW DVI a Series Tabletop useInstallation, cont’d Back of the rack mountingFurniture mounting Preparing the SW2/SW4 for under-desk mountingInstallation, cont’d Rear Panel Features SW2 DVI a rear panelInstallation, cont’d Wiring the Power Connector DVI-I Video ConnectorsAudio Connectors Pin SignalWiring the Remote/Autoswitching Connector Wiring for RS-232Enabling autoswitching Audio outputThree OperationFront Panel Features Powering on the switcherOperation OperationsUsing the IR 102 remote control Locking IR remote accessEnabling front panel lockout executive mode Remote control buttonsSetting equalization for input sources ResettingUpdating Firmware Downloading the firmwareLoading the firmware to the switcher On the first screen that appears, select the RS-232 tabSIS Configuration and Control FourUsing the Command/Response Table SIS Configuration and ControlHost-to-Switcher Communications Command/response table for SIS commands Input selectionSpecifications, Part Numbers Accessories SIS Configuration and Control, cont’dSpecifications, Part Numbers, Accessories SpecificationsIncluded Parts Specifications, Part Numbers, Accessories, cont’dAccessories Cables Part numbers