Extron electronic IPL T PC1 Using the Command and Response Table, ASCII to Hex Conversion Table

Using the Command and Response Table

The PC1 can be controlled via either a Telnet (port 23) connection or a web browser

(port 80) connection. The ASCII commands listed in the tables perform the same functions, but they are encoded differently to accommodate the requirements of each port (Telnet or web browser). The ASCII to hexadecimal (HEX) conversion table below is for use with the command and response tables.

ASCII to Hex Conversion Table

Space

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Figure 42. ASCII to Hex Conversion Table

The command and response table lists valid ASCII (for Telnet) command codes, the corresponding URL (universal resource locator) encoded (for web browsers) command codes, the interface responses to the host, and a description of the command function or the results of executing the command.

•Upper- and lowercase characters can 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 (for example, 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, you can use the URL reference to shorten the examples. “URL” refers to the full address of the control interface and web page reference, including all path information (that is, 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 interface.

•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)
NOTES: •	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 must 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.

IPL T PC1 • SIS Programming and Control 49