Honeywell VRX180 - Manual (Page 45)

Installation
Video Recorder - User Manual 31
2.5.7.2.2 Interface connector
TOP SIDE
BOTTOM SIDE
RXB (+)
TXA (-)
TXB (+)
RXA (-)
Figure 2-9 RS422 Inferface connections
2.5.7.3 RS485 (2 wires) wiring configuration
VIDEO RECORDER VIDEO RECORDER VIDEO RECORDER
Figure 2-10 RS485 wiring configuration