Appendix B: Interface Specification - EverFocus PowerPlex EDR-920 Installation & Operation Manual

INTERFACE SPECIFICATION
1. RS-232 Pin assignment
EDR1640/920 can be controlled by external devices through RS-232 interface.
Pin assignment 9-pin RS-232 plug
1 2 3 4 5
6 7 8
9
DVR
PIN NAME
1 FREE
2 TXD
3 RXD
4 FREE
5 SIGNAL GROUND
6 FREE
7 FREE
8 FREE
9 FREE
RS-485 pin assignment
Both RS-485 sockets are equally wired.
Pin 1: GND
Pin 3: RS485 + (A)
Pin 6: RS485 - (B)
2. Interface settings
For the RS232/485 port, 6 different speeds are available: 1200, 2400, 4800, 9600, 19200 and
38400 baud. Define the port settings in the RS232/RS485 menu.

APPENDIX B: Interface specification

HOST
PIN # NAME
1 FREE
2 RXD
3 TXD
4 FREE
5 SIGNAL GROUND
6 FREE
7 FREE
8 FREE
9 FREE
1 2 3 4 5 6 7 8
Illustration: contact side RJ-45 plug
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