User's Manual

Programmer’s Guide for the Telnet and Web Browser

Using the Command/Response Table

The following are either Telnet (port 23) or Web browser (port 80) commands. There

are some minor differences when implementing these commands via Telnet or via URL

encoding using a Web browser. All commands listed below will 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 will properly handle them. All examples in the

command/response table show the proper implementation in a Telnet or Web browser

session.

NOTE: For Web browsers, all non-alphanumeric characters must be represented as their

hex equivalent such as %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).

Telnet

Web Browser

Escape (Hex 1B) W [must not be encoded]

Carriage Return (Hex 0D) Pipe Character ( | ) [must not be encoded]

When using these commands 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 URL Encoding, later in this section).

NOTE: With Telnet you can use either the “Escape” character or the “W” character,

and the carriage return or the pipe character. With the Web browser, you are

required to use the “W” character and the pipe character.

In either method {Data} signiﬁes that data will be directed to a speciﬁed port and must be

encoded if it is non-alphanumeric.

The table on pages 28 through 32 lists the commands that the IPL T CR48 recognizes as

valid, the responses that are returned to the host, a description of the function of each

command, and the results of executing the command.

NOTE: Upper and lower case text can be used interchangeably except where noted.

IPL T CR48 • Communication and Control 23