Rs485 Cable Wiring Diagram. Ground potential differences are harmful in signal quality and signal transceivers reliability so it should be kept as low as possible within a network. Typically it uses black green white and red wire colors.
The distances these signals are carried is greater due to differential signals. APPENDIX B CABLE WIRING DIAGRAM FOR RS485 LINE. This application note is intended to provide basic guidelines for wiring an RS-485 network.
This application note is intended to provide basic guidelines for wiring an RS-485 network.
Ptz Rs485 Wiring addition is that it has an extra wire pair known as the RS communication wires which sends communication signals from your DVR to your PTZ camera. If using a CAT5 cable you may use a signal pair for RS-485 signals and another pair for ground wiring. Ideally an RS485 system consists of a single linear cable no branches with 120 ohm resistors connected across the 2 wires at each end of the cable. For example Belden 3105A cable can be specified but different types of cable with equivalent characteristics can be used.
