Extron electronic manual DIP switch settings, SWP123 Presentation Switcher Remote Control

Remote Control

Remote Control Port (RS-232/RS-422/RS-485)

The SWP123 Presentation Switcher RS-232/RS-422/RS-485 port connector is used to connect to a host or external controlling device, such as a computer or control system, which can generate the proper command codes and recognize the switcher’s responses.

Rx+

Rx-

Tx+

Rx+	5	1
Rx-

Tx+

Tx-

Tx-

Gnd	Gnd	9	6
	RS-232/422/485	DB9 Pinout (Female)
5-pole captive screw connector/socket		To control equipment

The RS-232/RS-422/RS-485 connector is a 5-pole, captive screw connector (see illustration above) with the following pin designations:

	Switcher	Computer
	Serial Port	DB-9 Serial Connector
	RX+	3 TX
RS-232	RX-	2 RX
	TX+
Connection
	TX-	5 GND
	GND
RS-422/485	RX+	2	TX+
	RX-	6	TX-
Full Duplex	TX+	3	RX+
Connection	TX-	7	RX-
	GND	5	GND
		1	GND

RS-485

Half Duplex

Connection

RX+	2	TX+
RX-	6	TX-
TX+	3	RX+
TX-	7	RX-
GND	5	GND
	1	GND

The default protocol is 9600 baud, 8-bit, 1 stop bit, no parity, and no flow control.

Commands and responses for programming the SWP123 Switcher from a host system connected to the RS-232/RS-422/RS-485 port are listed on the following pages.

DIP switch settings

Use the DIP switch bank in the back of the SWP123 switcher to configure the serial ports to operate as an RS-232 (factory default) or RS-422/RS-485 interface. DIP switch settings change according to the standard used. Configure the DIP switch according to your requirements, based on the table

RS-232

below.

RS-422/485

Termination resistors should be turned on only when the switcher is operating in RS-422/RS-485 mode, and then only for the first and last units on a long serial line. The default switch settings are all OFF. In half-duplex mode, turn on only one of the termination resistors, as they are connected together by the cable.

5-2 SWP123 Presentation Switcher • Remote Control