Western Digital 4CH TRIPLEX - Manual (Page 61)

5-13. External Terminal Information
5-13-1. RS-232C
No
Name Description No Name Description
1 DCD Data Carrier Detect 6 DSR Data Set Ready
2 RxD Receive Data 7 RTS Request to Send
3 TxD Transmit Data 8 CTS Clear to Send
4 DTR Data Terminal Ready 9 RI Ring Indicator
5 GND Signal Ground
5-13-2. RS-422/485
No Name Description (RS-422)
1 NC Not Connected.
2 RxD+ Receive Data+
3 TxD+ Transmit Data+
4 TxD- Transmit Data-
5 GND Signal Ground
6 RxD- Receive Data-
7 NC Not Connected.
8 NC Not Connected.
9 NC Not Connected.
No Name Description (RS-485)
1 NC Not Connected.
2 NC Not Connected.
3 TxD+ Transmit Data+
4 TxD- Transmit Data-
5 GND Signal Ground
6 NC Not Connected.
7 NC Not Connected.
8 NC Not Connected.
9 NC Not Connected.
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