Mvc 121 Plus-Initiated Messages; Using The Command/Response Tables - Extron electronics MVC 121 Plus User Manual

USB Port (Front Panel)
The MVC 121 Plus has a front panel USB port that can be connected to a host device such
as a computer running the HyperTerminal utility, or the DataViewer utility. The port makes
serial control of the switcher possible. Once the connection is established, see
Command/Response Tables
MVC 121 Plus-initiated Messages
The MVC initiates messages under specific conditions. No response is required from the
host. The MVC 121 Plus-initiated messages are listed here (underlined).
© Copyright 2011, Extron Electronics, MVC 121 Plus, Vn.nn,
60-1096-01
Vn.nn is the firmware version number.
The MVC sends the boot and copyright messages under the following circumstances:
If the MVC is off and an RS-232 connection is already set up (the PC is cabled to the MVC
and a serial communication program such as HyperTerminal is open), the connected unit
sends these messages via RS-232 when first powered on.

Using the Command/Response Tables

SIS commands consist of a string (one or more characters per command field). No special
characters are required to begin or end a command sequence. When the
MVC 121 Plus determines a command is valid, it executes the command and sends
a response to the host device. All responses end with a carriage return and a line feed
]
(CR/LF =
When programming, certain characters are more conveniently represented by their
hexadecimal rather than ASCII values. The following table shows the hexadecimal equivalent
of each ASCII character:
Space
Figure 38.
below for SIS programming details.
), signaling the end of the response character string.
ASCII to Hex Conversion Table
ASCII to Hex Conversion Table
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MVC 121 Plus • SIS Programming and Control
Using the
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