71
W&T
Subject to error and alteration
USB Interfaces
Wiring examples
RS485
Bus A (-)
Bus B (+)
Bus A (-)
Bus B (+)
PC
36201
RS485 device
RS485 device
RS485 2-wire application
1
6
2
7
DOut A
DOut B
DIn A
DIn B
36201
RS485
RxD A (-)
RxD B (+)
TxD A (-)
TxD B (+)
RxD A (-)
RxD B (+)
TxD A (-)
TxD B (+)
PC
RS485 device
RS485 device
RS485 4-wire bus master application
1
6
2
7
DOut A
DOut B
DIn A
DIn B
1
6
2
7
3
8
4
9
DOut A
DOut B
DIn A
DIn B
HOut A
HOut B
HIn A
HIn B
RxD A (-)
RxD B (+)
TxD A (-)
TxD B (+)
CTS A (-)
CTS B (+)
RTS A (-)
RTS B (+)
RS422
PC
36201
RS422 device
RS422 hardware handshake application
USB
USB
USB
USB
USB
USB