Filter
Top Products
PIN NAME PIN # NAME
1 FREE 1 FREE
2 TXD 2 RXD
3 RXD 3 TXD
4 FREE 4 FREE
5 SIGNAL GROUND 5 SIGNAL GROUND
6 FREE 6 FREE
7 FREE 7 FREE
8 FREE 8 FREE
9 FREE 9 FREE
DVR
HOST
153
9
2
8
4
76
Pin assignment 9-pin RS-232 plug
75
1. RS-232 Pin assignment
EDR1640/920 can be controlled by external devices through RS-232 interface.
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
INTERFACE SPECIFICATION
1 2 3 4 5 6 7 8
RS-485 pin assignment
Both RS-485 sockets are equally wired.
Pin 1: GND
Pin 3: RS485 + (A)
Pin 6: RS485 - (B)
Illustration: contact side RJ-45 plug