Titan USB-COMi Installation Manual page 13

RS-422 Signal Pin-outs of DB-9 Male
RS-422 Signal Wiring
 Point-to-Point 4 Wire Full Duplex
USB-COMi(-SI)
2 TxD+(B)
1 TxD- (A)
3 RxD+ (B)
4 RxD- (A)
5
GND
 RS-422 with Handshaking
USB-COMi(-SI)
2 TxD+(B)
1 TxD- (A)
3 RxD+ (B)
4 RxD- (A)
5
GND
7
RTS+(B)
6
RTS- (A)
8 CTS+(B)
9 CTS- (A)
USB-COMi & USB-COMi-SI USB to RS-422/485 Adapters User's Manual
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Pin 9
TxD- (A)
TxD+(B)
RxD+(B)
RxD-(A)
GND
RTS- (A)
RTS+(B)
CTS+(B)
CTS- (A)
RS-422 Device
RxD+ (B)
RxD- (A)
TxD+(B)
TxD- (A)
GND
RS-422 Device
RxD+ (B)
RxD- (A)
TxD+(B)
TxD- (A)
GND
CTS+(B)
CTS- (A)
RTS+(B)
RTS- (A)
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