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E6581315
34
QWiring (2-wire RS485 communication)
Master
RXD+/TXD+
RXD-/TXD-
SG
C
N1
Pin-4
Pin-5
Pin-8
(Pin-3)
Straight Straight
Terminating resistance
120 -1/2W
Straight
Slave
RXD+/TXD+
RXD-/TXD-
SG
Slave
RXD+/TXD+
RXD-/TXD-
SG
Slave
RXD+/TXD+
RXD-/TXD-
SG
* Never use pin-7 (P11).
QWiring (4-wire RS485 communication)
* Never use pin-1 (Open) and pin-7 (P11).
* You do not need to connect the master receive lines (pins 4 and 5) or the slave send lines (pins 3
and 6).
Terminating resistance
120 -1/2W
Slave Slave Slave
C
N1
Master
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
RXA
RXB
TXA
TXB
SG
Cross Straight
Straight
Pin-4
Pin-5
Pin-3
Pin-6
Pin-8
Pin-2)
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