Extron Electronics MPS 601 User Guide - Manual (Page 27)

Host-to-MPS Communications
The MPS switcher accepts Simple Instruction Set (SIS) commands through the RS-232 or
USB configuration port. SIS commands consist of one or more characters per command
field. They do not require special characters to begin or end the command character
sequence. Each response to an SIS command ends with a carriage return and a line feed
(CR/LF = ]), which signals the end of the response character string. A string is one or more
characters.
MPS Switcher-initiated Messages
When a local event occurs, such as a front panel operation, the MPS switcher responds
by sending a message to the host. The MPS 601-initiated messages are listed below
(underlined).
Boot-up messages
(c) Copyright 20 nn, Extron Electronics, MPS 601, Vx.xx,nn-nnnn-nn ]
The copyright message is initiated by the switcher when it is first powered on. Vx.xx is the
firmware version number.
Status change messages
The switcher-initiated status change messages are a result of front panel operations (actual
or software-simulated). The status change messages are the same as switcher responses
to certain commands. See the last column of the command and response tables on the
following pages.
MPS Switcher Error Responses
When the MPS switcher receives an SIS command and determines that it is valid, it
performs the command and sends a response to the host device. If the switcher is unable
to perform 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)
E06 ] — Invalid switch command (due to auto-input switch enabled)
E10 ] — Invalid command
E13 ] — Invalid parameter (out of range)
E14 ] — not valid for this configuration
E17 ] — Invalid command for signal type
E22 ] — busy
Verbose Mode
Telnet connections to the switcher can be used to monitor for changes that occur on the
switcher, such as front panel operations and SIS commands from other Telnet sockets or
a serial port. For a Telnet session to receive change notices from the switcher, the Telnet
session must be in verbose mode 1 or 3 (see
Verbose mode on page 27).
21 MPS 601 • Remote Communication and Control