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MMX 42/62 Series Matrix Switchers • Remote Control
Remote Control
MMX 42/62 Series Matrix Switchers • Remote Control
4-2 4-3
The switcher’s rear panel Remote connector (figure 4-1) can be
connected to the serial port output of a host device. Remote
communications with the switcher are via the Extron Simple
Instruction Set or using the Windows-based Extron control
program.
DB9 Pinout (Female)
To control equipment
5 1
9 6
Rx
Tx
Gnd
Rx
Tx
Gnd
RS-232
3-pole
captive screw
connector/socket
Pin RS-232 Function
1 —
2 TX Transmit data (-)
3 RX Receive data (+)
4 —
5 Gnd Signal ground
6 —
7 — —
8 — —
9 — —
—
—
—
Figure 4-1 — Remote connector pinout
The RS-232 protocol of the rear panel RS-232/Remote connector
is 9600 baud, 1 stop bit, no parity, and no flow control.
Simple Instruction Set Control
Host-to-interface communications
SIS commands consist of one or more characters per field. No
special characters are required to begin or end a command
character sequence. When a command is valid, the switcher
executes the command and sends a response to the host device.
All responses from the switcher to the host end 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.
Switcher-initiated messages
When a local event, such as a front panel operation or error
condition, occurs, the switcher responds by sending a message
to the host. The switcher-initiated messages are listed below:
(c) Copyright 2004, Extron Electronics MMX (42 or 62), Vx.xx,
60-nnn-nn]
The switcher issues the copyright message and the input
selected message when it first powers on. Vx.xx is the firmware
version number.
Outy•Inn•All]
Outy•Inn•Vid]
Outy•Inn•Aud]
The switcher sends the Outy•Inn message whenever the
selected input is changed using the front panel buttons. y is
the output number and n is the input number. All, Vid, or Aud
indicates both video and audio, video only, or audio only. The
power-up default is video and audio input 1 tied to output 1
and output 2.
Error responses
When the switcher receives a valid SIS command, it executes
the command and sends a response to the host device. If
the switcher is unable to execute the command because the
command is invalid or it contains invalid parameters, the
switcher returns an error response to the host. The error
response codes are:
E01 - Invalid input channel number (out of range)
E10 - Invalid command
E12 - Invalid output number (out of range)
E13 - Invalid parameter
Timeout
Pauses of 10 seconds or longer between command ASCII
characters result in a timeout. The command operation is
aborted with no other indication.