Moxa Technologies A60, A51 manual Features and Specifications, Introduction

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Introduction

Chapter 1

RS-422/485

RJ-45 Connector

RS-422/485

CIsolatedRS-232toRS-422/485

A51 onverter

A51

T	R	R	P
X	X	T	W	RS-232
D	D	S	R	RS-232

Power Jack

RS-232

RJ-45 Connector

Outlook of A51

1.2 Features and Specifications

Features

Both A50 and A51 are RS-232 to RS-422/RS-485 bidirectional converters except that A51 has one more feature: isolation protection, which provides high voltage protection up to 2000V.

All the switches, SW1 and SW2, of A50/A51 are designed to be inside of the converter to protect switch settings from unintended change and introducing communication error without any warning. Hence, it is necessary to take the two screws off and open the cover up if you need to change the operation mode via sliding the switches.

The A50/A51 must be powered either from a DC +9V to +30V,

2

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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