Rs-232/Rs-422 Link - Extron electronics VGA MATRIX SWITCHERS MVX PLUS 128 User Manual

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SIS Programming and Control

RS-232/RS-422 Link

The switcher's rear panel Remote 9-pin D female connector (fi gure 4-1) can be
connected to the RS-232 or RS-422 serial port output of a host device such as a
computer running the HyperTerminal utility, an RS-232 capable PDA, or a control
system. This connection makes software control of the switcher possible.
Figure 4-1 — Remote connector pin assignments
The default protocol is as follows:
• 9600 baud
• 1 stop bit
N The MVX Plus 128 switcher can support either RS-232 or RS-422 serial
MVX Plus 128 VGA Matrix Switchers • Programmer's Guide
4-2
Pin RS-232 Function
1 — Not used
2 TX Transmit data
3 RX Receive data
1
6
4 — Not used
5 Gnd Signal ground
9
5
6 — Not used
7 — Not used
8 — Not used
9 — Not used
• no parity
• no fl ow control
communication protocol, and can operate at 9600, 19200, 38400, or 115200 baud
rates. See Selecting the RS-232/RS-422 protocol and baud rate in chapter 3,
Operation, to confi gure the RS-232/RS-422 port from the front panel.
RS-422 Function
— Not used
TX– Transmit data (–)
RX– Receive data (–)
— Not used
Gnd Signal ground
— Not used
RX+ Receive data (+)
TX+ Transmit data (+)
— Not used
• 8-bit