Extron Electronics DMP 128 User Guide - Manual (Page 139)

When programming, certain characters are more conveniently represented by their
hexadecimal rather than ASCII values. The table below shows the hexadecimal equivalent
of each ASCII character:
•
Space
l
I
ASCII to HEX Conversion Table
Figure 83. ASCII to Hex Conversion Table
The Command and 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 DMP 128 responses to the host, and a description of the command
function or the results of executing the command.
symbol definitions
] = Carriage return/line feed
} = Carriage return (no line feed)
• = Space character
| = Pipe (can be used interchangeably with the
}
character)
* = Asterisk character (which is a command character, not a variable)
E = Escape key
W = can be used interchangeably with the E character
notE: For Web encoding only: data is directed to the specified port and must be
encoded (URL encoding) if it is non-alphanumeric. Change any non-alphanumeric
character (%, +, }) within the data section into the corresponding hexadecimal
equivalent, %xx, where xx represents the two-character hex byte. For example,
a space (hex: 20 ) would be encoded as %20 and a plus sign (hex: 2B) would be
encoded as %2B.
Error responses
When the DMP 128 is unable to execute the command, it returns an error response to the
host. The error response codes and their descriptions are as follows:
E12 - Invalid port number E24 - Privilege violation
E11 - Invalid preset E25 - Device is not present
E13 - Invalid parameter (number is out of range) E26 - Maximum connections exceeded
E14 - Not valid for this configuration E27 - Invalid event number
E17 - System timed out E28 - Bad filename or file not found
E22 - Busy
DMP 128 • SIS Programming and Control 133