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Extron • Model 8 PLUS & Model 10 PLUS Switchers • User’s Manual
Model 8/10 PLUS RS-232 Control
The Model 8/10 PLUS switchers can be controlled through the
RS-232 port by a Host device/system. The RS-232 connector
location and pin assignments are shown in the drawing below.
Software
Each Model 8/10 PLUS switcher ships with a 3.5" diskette
containing Extron's Windows® compatible UNIVSW Control
Software which enables the user to select the input and check
switcher status in a Windows “point and click” environment.
This software will be covered later in this chapter.
Host/Switcher Communications
The Model 8/10 PLUS Switchers treat any character that
comes in on the RS-232 port as a possible command but
accepts only a limited number as legal commands. There are
no codes required to say that a command is coming, or that a
command has ended. A simple command may be a single
character typed on a keyboard and does not require any
special characters before or after. (i.e. It is not necessary to
press “enter” from the keyboard.) Simple commands could be
from a terminal, or any other controlling device.
When the Model 8/10 PLUS switcher receives a command
and determines that it is valid, it will execute the command
and send a response back to the controlling (Host) device. If
the command is determined by the Model 8/10 PLUS switcher
to be invalid, an error response will be returned to the Host.
All responses from the switcher to the Host begin and end
with a carriage return and a line feed (CR/LF) signaling the
end of the Response character string (string = one or more
characters).
Using the Command/Response Table
The table on the following page lists those commands which
the Model 8/10 PLUS switchers recognize as valid and the
responses that will be returned to the Host. The Description
column defines the Command, the results of executing the
Command, or a definition of the response.
The Command string in the left hand column of the table is
defined in the right hand column. The Command string is
shown as ASCII characters, an ASCII to HEX conversion
table is provided.
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Model 8/10 PLUS RS-232 Control