Extron Electronics MLC 104 SIS Programming and Control - Manual (Page 4)

SIS ™ Programming and Control, cont’d
MLC 104 Series • SIS ™ Programming and Control 5-4
PRELIMINAR
Y
RS-232. The ASCII and URL commands listed in the tables starting on page 5-8
perform the same functions, but they are encoded differently to accommodate the
requirements of each port (Telnet or browser).
The following ASCII to hexadecimal (HEX) conversion table is for use with the
command/response tables.
ASCII to HEX Conversion Table
•
ASCII to Hex conversion table
The command/response tables list valid ASCII (for Telnet or RS-232) command
codes, the corresponding URL (uniform resource locator) encoded (for Web
browsers) command codes, the MLC’s responses to the host, and a description of
the command’s function or the results of executing the command.
• Upper and lower case characters may be used interchangeably in the command
field unless otherwise specified.
• Commands may be sent back-to-back without spaces (for example, 2!65V1Z).
• Numbers can be entered as 1, 2, or 3 digits, e.g., 8V = 08V = 008V.
• There are a few differences in how to enter the commands depending on whether
you are using Telnet or a Web browser.
• When using these commands through a Web browser, the URL reference
is used to shorten the examples. “URL” refers to the full URL of the
control interface and Web page reference including all path information
(e.g., http://192.168.100.10/myform.htm).
• To send any of the commands using a Web browser you must prefix them
with the full URL followed by ?cmd=.
• For control via a Web browser, all non-alphanumeric characters must be
represented as the hexadecimal equivalent, %xx, where xx represents the
two-character hex byte. For example, a comma (,) would be represented
as %2C. Characters such as %, +, and the space character ( ) must be
encoded as hex bytes, or they will be misinterpreted by the MLC.
• Some characters differ depending on the method you use to send the
commands:
Telnet
Web browser
Escape (hex 1B) W [must not be hex encoded]
Carriage return (hex 0D) Pipe character ( | ) [must not be hex encoded]
With Telnet you can use either an “Escape” command or a “W” command, and
the carriage return or the pipe character. With the Web browser, you are
required to use a “W” command and the pipe character.
In either method, {Data} = Data that will be directed to a specified port
and must be hex encoded if non-alphanumeric.
If you make adjustments (changes to volume, etc.), whether via the front panel
or via RS-232 or IP communication, it will take 1 minute 40 seconds (100
seconds) for the data in the MLC’s RAM to be saved to flash memory.