Extron Electronics ISM 482 - Manual (Page 37)

ISM 482 Integrated Scaling Matrix Switcher • Programming Guide 31
Programming Guide
This section describes:
• RS-232 Link
• Ethernet Link
• Symbols
• Switcher-Initiated Messages
• Host-to-Switcher Instructions
• Switcher Error Responses
• Using the Command and Response Table
RS-232 Link
The switcher’s rear panel Remote port 9-pin D female connector (see figure 26) can be
connected to the RS-232 serial port output of a host device, such as a computer running
the HyperTerminal utility or a control system. This connection makes software control of the
switcher possible.
RS-232 Function Pin 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
1
5
6
9
REMO
TE
RS-232/RS-422
Figure 26. Remote Connector Pin Arrangement
The protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no flow control.