RS-232/RS-422 Ports

Programmming Guide

The rear panel RS-232/RS-422 connectors (figure 4-1) of the matrix switcher BME 0 can be connected to the serial port output of a host device such as a computer running the HyperTerminal utility or a control system. This connection makes Simple Instruction Set (SIS) control of the switcher possible from the computer or host via the RS-232/RS-422 link.

		Pin	RS-232	Function	RS-422	Function
		1	—	Not used	TX+	Transmit data (+)
5	1	2	TX	Transmit data	TX-	Transmit data (-)
5	1	3	RX	Receive data	RX+	Receive data (+)
		3	RX	Receive data	RX+	Receive data (+)
					RX-	Receive data (-)
		4	—	Not used	RX-	Receive data (-)
		5	Gnd	Signal ground	Gnd	Signal ground
9	6	6	—	Not used	—	Not used
Female		7	—	Not used	—	Not used
		8	—	Not used	—	Not used
		9	—	Not used	—	Not used

Figure 4-1 — RS-232/RS-422 connector pin arrangement

NThe Matrix 12800 Switchers are factory configured for RS-232 control. To use the switcher under RS-422 control, you must change an internal DIP switch. See “Swapping the serial port protocol (RS-232/RS-422)” in chapter 6, “Upgrades and Maintenance”, for details.

The default communications rate is 9600 baud. Baud rates of 19200, 38400, and 115200 are also available, see “Changing the serial port baud rate”, in chapter 6, “Upgrades and Maintenance”. The protocol is 8-bit, 1 stop bit, no parity, and no flow control.

4-2 Matrix 12800 Switchers • Programming Guide

12800 specifications

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Extron electronic manual RS-232/RS-422 Ports, Matrix 12800 Switchers Programming Guide

Models: 12800

Programmming Guide