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SIS Programming
and Control
The MLS 608 D units can be remotely controlled via a host computer or other device (such
as an optional MLC 226 control system) attached to the rear panel RS-232 connector or
the front panel USB conguration port.
The device can be congured and controlled by the Extron Simple Instruction Set (SIS
™
) of
commands or by using the Extron DSP Congurator software program.
This section describes SIS communication and control. Topics that are covered include:
z Host to MLS 608 D Communications
z Command and Responses
The switcher uses a default protocol of
• 38400 baud • 1 stop bit • no parity • no flow control.
Host to MLS 608 D 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 MLS 608 D switcher determines
that a command is valid, it executes the command and sends a response to the host
device. All responses from the switcher to the host end with a carriage return and a
line feed (CR/LF = ]), signalling the end of the response character string (one or more
characters).
MLS 608 D Switcher-initiated Messages
When a local event occurs, such as a front panel operation, the MLS 608 D responds by
sending a message to the host. The MLS 608 D-initiated messages are listed below.
Boot-up messages
(c) Copyright 2011, Extron Electronics, MLS 608 D xx, Vx.xx,
60-1050-0x ]
The copyright message is initiated by the switcher when it is rst powered on. Vx.xx is the
firmware version number.
Status change messages
The switcher-initiated status change messages are a result of front panel operations (actual
or software-simulated). The status change messages are the same as switcher responses to
certain commands. See the last column of the command/response tables on the following
pages.
MLS 608 D Series • SIS Programming and Control 61