Moxa Technologies A60, A51 manual Appendix a

Appendix A • • RS-232 Pinouts and Cable Wiring

Note : Each group of (RTS, CTS) and (DTR, DSR) pins have been shorted on A50/A51, which release the users from the hardware flow control cable wiring problem. Thus, there are two types of RS-232 cable wiring which are listed below.

Type 1: To connect RS-232 side of A50/A51 to a DTE (e.g. PC COM1/2) or DCE . (Please check the precise DTE/DCE pinouts, the following DTE/DCE pinouts is just an example)

A50/A51	DTE		A50/A51		DTE
RJ-45 Connector	DB-25 Male		RJ-45 Connector		DB-9 Male
1 DCD	8	DCD	1	DCD	1	DCD
2 DSR	20	DTR	2	DSR	4	DTR
3 RTS	5	CTS	3	RTS	8	CTS
5 TxD	3	RxD	5	TxD	2	RxD
6 RxD	2	TxD	6	RxD	3	TxD
7 GND	7	GND	7	GND	5	GND
8 CTS	4	RTS	8	CTS	7	RTS
9 DTR	6	DSR	9	DTR	6	DSR

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