Filter
Top Products
Appendix A l l RS-232 Pinouts and Cable Wiring
22
Note : Each group of (RTS, CTS) and (DTR, DSR) pins have
been shorted on A50/A51, which release the users from
the hardware flow control cable wiring problem. Thus,
there are two types of RS-232 cable wiring which are
listed below.
Type 1:To connect RS-232 side of A50/A51 to a DTE (e.g. PC
COM1/2) or DCE . (Please check the precise DTE/DCE
pinouts, the following DTE/DCE pinouts is just an
example)
A50/A51 DTE A50/A51 DTE
RJ-45 Connector DB-25 Male RJ-45 Connector DB-9 Male
1 DCD 8 DCD 1 DCD 1 DCD
2 DSR 20 DTR 2 DSR 4 DTR
3 RTS 5 CTS 3 RTS 8 CTS
5 TxD 3 RxD 5 TxD 2 RxD
6 RxD 2 TxD 6 RxD 3 TxD
7 GND 7 GND 7 GND 5 GND
8 CTS 4 RTS 8 CTS 7 RTS
9 DTR 6 DSR 9 DTR 6 DSR