
42
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RS-232 Wiring Diagram
Serial Device EX-9132C-2
2 RX 3 TX
3 TX 2 RX
5 GND 5 GND
7 RTS 8 CTS
8 CTS 7 RTS
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RS-422 Pin Assignment
The pin assignment scheme for a 4-pin RS-422 is given below.
PIN 1 : R- PIN 2 : R+ PIN 3 : T- PIN 4 : T+
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RS-422 Wiring Diagram
Serial Device EX-9132C-2
R- 3 T-
R+ 4 T+
T- 1 R-
T+ 2 R+
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RS-485 Wiring Diagram
Serial Device EX-9132C-2
D+ D-
D- D-
1 2 3 4
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