4-3

MPX 423 A • SIS Programming and Control
PRELIMINARY
• If the unit is on, it sends the boot and copyright messages when you first open
a Telnet connection to the unit. You can see the day of the week, date, and time
if the unit is connected via Telnet, but not via RS-232. If you are using a Telnet
connection, the copyright message, date, and time are followed by a password
prompt (if set).
Password information
The “]Password:” prompt requires a password (administrator level or user level)
followed by a carriage return.
If the correct password is entered, the unit responds with “]Login Administrator
]” or “]Login User]”, depending on password entered. If passwords are the
same for both administrator and user, the unit defaults to administrator privileges.
Error responses
If the MPX 423 A is unable to execute a command, it returns an error response to the
host. The error response codes and their descriptions are as follows:
E01 – Invalid input channel number (the number is too large)
E10 – Invalid command
E12 – Invalid output number / invalid port number
E13 – Invalid value (the number is out of range/too large)
E14 – Not valid for this configuration
E17 – System timed out
E22 – Busy
E23 – Checksum error (for file uploads)
E24 – Privilege violation (Ethernet, Extron software only). User privileges have
access to ALL view and read commands, and the following:
• create ties
• set RGB and audio mutes
Exception: User cannot read Admin password
E25 – Device is not present
E26 – Maximum number of connections has been exceeded
E27 – Invalid event number
E28 – Bad filename or file not found
Error response references
The following superscripted numbers are used within the command descriptions
on the following pages to identify commands that may respond as shown:
14 = Commands that give an E14 (not valid for this configuration) response if the
unit’s current configuration doesn’t support that command
22 = Commands that yield an E22 (busy) response.
24 = Commands that give an E24 (privilege violation) response if you are not
logged in at the administrator level.
27 = Commands that may yield an E27 (invalid event number) response.
28 = Commands that may give an E28 (file not found) response.
Copyright information
The following copyright message is initiated by the MPX 423 A matrix switcher at
power-up (for an RS-232 connection):
(c) Copyright 2007, Extron Electronics, MPX 423A, Vx.xx, 60-683-01
Vx.xx = the firmware version number.