Moxa Technologies A60 manual A50/A51A50/A51

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Chapter 3 •	• Operation

A50/A51A50/A51

DTE/

DCE

TA RS-232 RS-422/ TB RS-485 RB RA GND

RA

RB RS-422/ RS-232 TB RS-485

TA

GND

A50/A51

RA

RB RS-422/ RS-232 TB RS-485

TA

GND

DTE/

DCE

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

Full-duplex mode Off

SW2	Pin1	Pin2	Pin3	Pin4
TxD always enabled	On	Off	X	X
RxD always enabled	X	X	On	Off

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Contents A50/A51/A60 A50/A51 A60 Copyright Notice Moxa Internet Services Table of Contents Part II A60 RS-232 Surge Protection Page Introduction OverviewFeatures and Specifications IntroductionSpecifications A50/A51 with Mounting Kit Package Check List Introduction Installation Procedure Switch Function DescriptionLED Indicators Switch settings table of SW1 and SW2 is as followsRS-422/RS-485 Pinouts A50/A51 RJ-45 Jack Terminal Block Connector Pinouts Signals Chapter Operation Wire Full Duplex Point-to-pointWire Half Duplex Multidrop SW1 DTE Simplex/Transmit, Receive A50/A51A50/A51 Self Test Operation Appendix a RS-232 Pinouts & Cable Wiring Appendix a RS-232 Pinouts and Cable Wiring Appendix a RJ-45 Connector DB-25 Female P e n dxi B Appendix B Impedance Matching and Termination Resistors Appendix C Troubleshooting Appendix C Troubleshooting Chapter Introduction Features A60 with Mounting Kit ~32~ Installation TxD indicator signal from local port RxD indicator signal from remote port ~36~ Ppendix a Appendix a ∙ RS-232 Pinouts and Cable Wiring ∙ ~40~ Ppendix B