RS-232 Programming • Appendix A

Remote Control Port (RS-232)

Figure A-1 shows the RS-232 port connector. This is used to connect to a host, or external controlling device, such as a computer or control panel that can generate the proper command codes and recognize the System 5 responses.

.

Figure A-1. The Serial Port Connector is wired for RS-232

Female

Connector

9

5

 

6

1

5

9

Male

1 6 Connector

The RS-232 connector is a 9-pin D female with the following pin designations:

Pin

RS-232

Usage

 

1

n/u

 

 

2

Tx

RS-232

Transmit Data

3

Rx

RS-232

Receive Data

4

n/u

 

 

5

Gnd

Signal Ground (both)

6n/u

7n/u

8n/u

9n/u

Commands and responses for programming the System 5 Switcher from a Host system connected to the RS-232 port are listed on the next page.

The RS-232 protocol is 9600 baud, 8-bit, 1 stop bit with no parity and no flow control.

Figure A-2. Example of a touch panel connected to the RS-232 port.

Host-to-System 5cr Instructions

The System 5 will recognize certain ASCII characters as instructions. It then responds to those characters with appropriate information. Unrecognizable codes will get an error code as the response.

A-1

Extron • System 5cr Switcher • User’s Manual

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Extron electronic 68-388-01 manual Remote Control Port RS-232, Host-to-System 5cr Instructions

68-388-01 specifications

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