Extron electronic MGP 464 DI manual Software Configuration and Control, cont’d, Error responses

PRELIMINARY

Software Configuration and Control, cont’d

Error responses

When the MGP 464 receives a valid SIS command, it executes the command and sends a response to the host device. If the processor is unable to execute the command because the command is invalid or contains invalid parameters, it returns an error response to the host. The error response codes are:

E01 — Invalid input channel number (too large)

E09 — Invalid function number (too large)

E10 — Invalid command

E11 — Invalid preset number

E12 — Invalid output number (applies for addressing windows)

E13 — Invalid value (out of range)

E14 — Invalid for this configuration

E17 — Invalid command for signal type

E24 — Privilege violation

E26 — Maximum number of users connected has been exceeded

E27 — Invalid event number

E28 — Bad filename/File not found

Telnet and Web communications

The MGP 464 can also be controlled via an IP connection using either Telnet (port 23) or a Web browser (port 80). The ASCII and URL commands listed in the tables later in this chapter perform the same functions, but they are encoded differently to accommodate the requirements of each port (Telnet or browser).

The ASCII to hexadecimal (hex) character conversion table below is for use with the Command/response table for SIS commands, beginning on page 4-9.

ASCII to HEX Conversion Table

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ASCII to hexadecimal character conversion table

The command/response tables list valid ASCII (for Telnet) command codes, the corresponding URL encoded (for Web browsers) command codes, the processor’s responses to the host, and a description of the command’s function or results from executing the command.

•Upper- and lowercase letters may be used interchangeably in the command field unless otherwise specified.

•Commands may be sent back-to-back without spaces; for example, 2*2!2*0B.

•Numbers can be entered as 1 digit, or as 2 or 3 digits with leading zeros; for example, 8V = 08V = 008V.

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