B&B Electronics VESR9xx - Fiber Models - Manual - Manual (Page 58)

Appendix D
www.bb-elec.com
www.bb-europe.com
52
Terminal RS-422/485 4-Wire RS-485 2-Wire
A
TDA (-) Data A (-)
B TDB (+) Data B (+)
C RDA (-) ---
D RDB (+) ---
E GND GND