Digi TransPort WR11 User Manual page 53

Hardware features
RS422/RS485 pinout
Pin # Direction
1 Out
2 Out
3 In
4 In
5 N/A
6 Out
7 In
8 Out
9 In
Notes
For true RS485 mode (2-wire half-duplex mode), the TD+ and RD+ pair and TD- and RD- pair
n
should be connected together.
The CTS and RTS signals are optional normally not needed for RS485.
n
Digi TransPort® Routers User Guide
RS422/ RS485
CTS-
RD+
TD+
RTS_B RTS-
GND
RD-
RTS+
CTS+
TD-
TransPort WR31 hardware features
Description
Clear To Send -
Receive Data +
Transmit Data+
Ready To Send -
Ground
Receive Data -
Ready To Send +
Clear To Send +
Transmit -
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