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RX
TX
GND
□
□ RS-422 Pin Assignment
□
The pin assignment scheme for a 4-pin RS-422 of 7-pin(
RS-232/422/485
is given below.
PIN 1 : R-
□
□ RS-422 Wiring Diagram
□
Serial Device
R-
R+
T-
T+
□
□ RS-485 Wiring Diagram
□
Serial Device
D+
D-
1 2 3 4
PIN 2 : R+
5 TX
6 RX
7 GND
PIN 3 : T-
EX-9132C-2RS485
3 T-
4 T+
1 R-
2 R+
EX-9132C-2RS485
42
Terminal Block)
PIN 4 : T+
D-
D+
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