Communication And Control; Programmer Guide For Telnet And Web Browsers; Using The Command And Response Table - Extron electronics IPL T S Series User Manual

Communication and
Control
The topics covered in this section are:
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Programmer Guide for Telnet and web Browsers

Using the Command and Response Table

The following are either Telnet (port 23) or web browser (port 80) commands. There are
some minor differences when you are implementing these commands via Telnet or via URL
encoding using a web browser. All commands listed below work using either connection
method; but, due to some limitations of the web browser, the encapsulation characters are
modified to make sure that the web browser properly handles them. All examples in the
command/response table on
page 4-6 show the proper implementation in a Telnet or web browser session.
NOTE: For web browsers: all non-alphanumeric characters must be represented as their
Telnet
Escape (Hex 1B)
Carriage return (Hex 0D)
When these commands are used through a web browser, the URL reference is used below
to shorten the examples. This would in practice be the full URL of the control interface and
web page reference including all path information, for example, http://192.168.100.10/
myform.htm.
To send any of the commands using a web browser, you need to prefix them with the full
URL followed by ?cmd= (see
NOTE: With Telnet you can use either the Escape commands with the carriage return or
Programmers Guide for Telnet and web Browsers
Customization
Advanced Serial Port Control
Troubleshooting
hex equivalent, for example, %xx where xx equals the two character representation of
the hex byte that needs to be sent (for example, a comma would be represented as
%2C).
URL Encoding
the W commands with the pipe (|) character. With the web browser you are required to
use the W commands and the pipe character.
web Browser
W (must not be encoded)
Pipe character (|) (must not be encoded)
on page 47).
IPL T S Series • Communication and Control 27