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Remote
Configuration
and Control
This section describes the connection through which the USB Extender Plus can be
configured and controlled remotely via Simple Instruction Set (SIS) commands, and
describes the commands that are available. Topics include:
• SIS Commands
• Host-to-Extender Communications
• Using the Command and Response Table
• Command and Response Table for SIS Commands
SIS Commands
The USB Extender Plus can be remotely set up and controlled via a host computer or
other device (such as a control system) that is attached to the front panel Config port (see
Connecting for Serial Communication on page 8 for information on connecting to this
port). You can issue SIS commands to the extender using your computer RS-232 interface
with a communication software program such as Extron DataViewer or HyperTerminal.
NOTE: The SIS command for resetting must be issued to both the transmitter and the
receiver. Do not reset one unit without resetting the other.
Host-to-Extender Communications
SIS commands consist of one or more characters per field. No special characters are
required to begin or end a command sequence. When the USB Extender Plus determines
that a command that was entered is valid, it executes the command and sends a response
to the host device.
Most responses from the USB Extender Plus T/R 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.
Extender-initiated Message
When power is applied to the extender, it sends the following copyright message:
©
Copyright 20nn, Extron Electronics USB Extender Plus, Vn.nn
where Vn.nn is the firmware version number.
NOTE: This message is displayed only when power is applied to the extender while it is
connected to the computer via the Config port.
USB Extender Plus T/R • Remote Configuration and Control
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