Moxa Technologies A51, A60 manual Wire Half Duplex

Operation • • Chapter 3

2-wire Half Duplex

		A50/A51
	RS-232		TA
DTE/			TB
DCE			RB
			RA

RS-485 GND

A50/A51

RA
RB		RS-232
TB
TA
	RS-485
GND

DTE/

DCE

In the graph, TA, TB, RA and RB could be either from RJ-45 or Terminal Block. The settings of the switches for each A50 (or

A51) are as follows:

SW1

Half-duplex mode On

SW2	Pin1	Pin2	Pin3	Pin4
TxD enabled by RTS	Off	On	X	X
RxD enabled by / RTS X		X	Off	On

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