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CrossPoint 450 Plus and MAV Plus Switchers • SIS Programming and Control
4-2
SIS
™
Programming and Control
PRELIMINARY
RS-232 and RS-422 Links
The switcher 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 two serial
ports are:
• The rear panel Remote RS-232/RS-422 port, a 9-pin D female connector
• The front panel Confi guration (RS-232) port, a 2.5 mm mini stereo jack
The default protocol for both ports is as follows:
• 9600 baud • no parity • 8-bit
• 1 stop bit • no fl ow control
Rear panel Remote port
The rear panel Remote RS-232/RS-422 port (fi gure 4-1) can be confi gured for either
RS-232 or RS-422. The port can operate at the 9600, 19200, 38400, or 115200 baud
rate.
N
The rear panel Remote RS-232/RS-422 port can be confi gured 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 confi gure the port from the front panel. See the Set serial port parameters
command on page 4-21 to confi gure 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