Extron electronic IPI 100 Series - Manual (Page 63)

IPI 100 Series, IPI 200 Series • Programming and Control 5-5
using URL-encoded commands. 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 ASCII to hexadecimal (HEX) conversion table shown above
is for use with the command/response tables.
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 IPI’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 with leading zeroes, 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 intercom 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. A comma (,), for example, 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 IPI For example, the ASCII
command +V must be encoded as %2BV for Web
browser use.
• 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]
N With Telnet you can use either an “Escape” (
E
)
command or a “W” command, and the carriage return or