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CrossPoint 450 Plus and MAV Plus Switchers • Programmer’s Guide
4-2
Programmer’s Guide
Serial Ports
The switcher's BME 0 has two serial ports that can be connected to a host device
such as a computer running the HyperTerminal utility, an RS-232 capable PDA, or a
control system. These ports make serial control of the switcher possible. The serial
ports are:
• The rear panel Remote RS-232/RS-422 port, a 9-pin D female connector
• The front panel Configuration (RS-232) port, a 2.5 mm mini stereo jack
The default protocol for both ports is as follows:
• 9600 baud • no parity • 8 data bits
• 1 stop bit • no flow control
The ports can be configured to operate at the 9600, 19200, 38400, or 115200 baud
rate.
N
These two ports are independent of one another. A front panel Configuration
port connection and a rear panel Remote port connection can both be active at
the same time.
N
The switcher can operate at 9600, 19200, 38400, or 115200 baud rates, but
Extron recommends leaving these ports at 9600 baud only.
N
Serial ports on BMEs other than BME 0 should not be used.
Rear panel Remote port
N
The rear panel Remote RS-232/RS-422 port can be configured from the front
panel or using Simple Instruction Set (SIS) commands. See "Selecting the
rear panel Remote port protocol and baud rate" in chapter 3, "Operation", to
configure the port from the front panel. See the "Command/Response table for
IP-Specific SIS commands", on page 4-23, to configure the port using an SIS
command.
RS-232FunctionPin Function
1
2
3
4
5
6
7
8
9
—
TX
RX
—
Gnd
—
—
—
—
Not used
Transmit data
Receive data
Not used
Signal ground
Not used
Not used
Not used
Not used
—
TX–
RX–
—
Gnd
—
RX+
TX+
—
Not used
Transmit data (–)
Receive data (–)
Not used
Signal ground
Not used
Receive data (+)
Transmit data (+)
Not used
RS-422
5
1
9
6
RS232/RS422
REMOTE
Figure 4-1 — Remote connector pin assignments