Moxa Technologies CP-132U - Manual (Page 78)

CP-132U Series User’s Manual 5-6
Multidrop 2-wire RS-485 (half-duplex)
CP-132UL RS-485 Device 1
Master Slave
3 Data+
Data+
4 Data- Data-
5 GND GND
RS-485 Device N
Slave
Data+
Data-
GND
Multidrop 4-wire RS-485 (full-duplex)
CP-132UL RS-485 Device 1
Master Slave
2 TxD+(B)
RxD+(B)
1 TxD-(A) RxD-(A)
3 RxD+(B) TxD+(B)
4 RxD-(A) TxD-(A)
5 GND GND
RS-485 Device N
Slave
RxD+(B)
RxD-(A)
TxD+(B)
TxD-(A)
GND
See the section “RS-485 Programming” in the “Serial Programming Tools” chapter for
more details on RS-485 programming.