Appendix D
VESR902D Series
DB-9M Pin
RS-232
Direction (RS-232)
RS-422/485 4-Wire
RS-485 2-Wire
1 DCD Input
RDA
(-) ---
2 RD Input
RDB
(+)
---
3
TD
Output
TDB (+)
Data A (-)
4
DTR
Output
TDA (-)
Data B (+)
5 GND --- GND GND
6 DSR Input --- ---
7 RTS Output --- ---
8 CTS Input --- ---
9 RI Input --- ---
Manual Document Number: VESR9xx-4210m
www.bb-elec.com
www.bb-europe.com
57