Remote Control Port (RS-232 and Contact Closure)
Figure A-1 shows the RS-232 port connector. This is used to connect to a host, or to an external controlling device, such as a computer or control panel, that can generate the proper command codes and can recognize the RGB 320 responses. In addition to having RS-232 connections (pins 2, 3 and 5), there are also six contact closure inputs that share the ground on pin #5.
Contact Closure Operation
A third party contact closure device can supply momentary contact between a designated input pin and ground (pin #5), causing the RGB 320 to switch to that input. Momentary contact is defined as having a duration of 250 to 500 milliseconds, e.g., touching pin #4 to pin #5 for the required time causes the RGB 320 to switch to input #2.
_________ When connecting to
9 for other signals or voltages. This will cause the RGB 320 to malfunction.
The
Pin |
| Usage |
1 | Input #1 | Contact Closure |
2 | Tx | |
3 | Rx | |
4 | Input #2 | Contact Closure |
5 | Gnd | Signal Ground (both) |
6 | Input #3 | Contact Closure |
7 | Input #4 | Contact Closure |
8 | Input #5 | Contact Closure |
9 | Input #6 | Contact Closure |
Figure A-1. Serial Port Connector Wired for Both RS-232 and Contact Closure
REMOTE
Commands and responses for programming the RGB 320 Switching Interface from a host system connected to the
The
Host-to-RGB 320 Instructions
The RGB 320 will recognize certain ASCII characters as instructions. It then responds to those characters with appropriate information. Unrecognizable codes will get an error code with the response.
Figure A-2. Example of a Touch Panel Connected to the RS-232 Port
RGB 320 Switching Interface System • User’s Manual • Extron |
