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Remote Control
Remote Control Port (RS-232/RS-422/RS-485)
Dip Switch Settings
Use the DIP switch bank in the back of the MSG switcher to configure the
serial ports to operate as an RS-232 (factory default-all switches up) or
RS-422/RS-485 (all switches down) interface. DIP switch settings change
according to the standard used. Configure the DIP switch according to
your requirements, based on the table below.
MSG Matrix Switchers • Remote Control
5-2
The MSG Matrix Switcher RS-232/RS-422/RS-485 port connector is used to
connect to a host or external controlling device, such as a computer or
control system, which can generate the proper command codes and
recognize the switcher's responses.
Rx+
Rx-
Tx+
Tx-
Gnd
RS-232/422/485
5-pole captive screw connector/socket
The RS-232/RS-422/RS-485 connector is a 5-pole, captive screw connector
(see illustration above) with the following pin designations:
Serial Port
RX+
RX-
RS-232
TX+
Connection
TX-
GND
RX+
RS-422/485
RX-
Full Duplex
TX+
TX-
Connection
GND
RX+
RS-485
RX-
Half Duplex
TX+
TX-
Connection
GND
The default serial protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no
flow control.
Commands and responses for programming the MSG Matrix Switcher from
a host system connected to the RS-232/RS-422/RS-485 port are listed on the
following pages.
Rx+
5
Rx-
Tx+
Tx-
Gnd
9
DB9 Pinout (Female)
To control equipment
Switcher
Computer
DB-9 Serial Connector
3
2
5
2
6
3
7
5
1
2
6
3
7
5
1
ON (1)(Down)
1
6
TX
RX
GND
TX+
TX-
RX+
RX-
GND
GND
TX+
TX-
RX+
RX-
GND
GND
RS-232
1 2 3
RS-422/RS-485
OFF (0)(Up-Default)
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