The followings are pin assignments for various connection options:

Opt8A/S

(DCE, DB25 Female)

2RxD

3TxD

4CTS

5RTS

6DTR

7GND

8DCD

20DSR

Opt8B/C

(DTE, DB25 Male)

2TxD

3RxD

4RTS

5CTS

6DSR

7GND

8DCD

20DTR

Opt8D

(DTE, DB9 Male)

1DCD

2RxD

3TxD

4DTR

5GND

6DSR

7RTS

8CTS

5-2Smartio C168H/HS User’s Manual

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Image 78
Moxa Technologies C168HS user manual Opt8A/S DCE, DB25 Female, Opt8B/C DTE, DB25 Male, Opt8D DTE, DB9 Male