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Operation l l Chapter 3
15
In the graph, TA, TB, RA and RB could be either from RJ-45 or
Terminal Blocks. The settings of the switches for each A50 (or
A51) are as follows:
SW1
Full-duplex mode Off
SW2 for Master Pin1 Pin2 Pin3 Pin4
TxD always enabled On Off X X
RxD always enabled X X On Off
SW2 for Slaves Pin1 Pin2 Pin3 Pin4
TxD enabled by RTS Off On X X
RxD always enabled X X On Off
2-wire Half Duplex