Allen-Bradley MicroLogix 1000 User Manual

Name: Allen-Bradley MicroLogix 1000
Brand: Allen-Bradley
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422 pages

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Preface

MicroLogix 1000 Programmable Controllers User Manual

D–2

RS-232 Communication Interface

RS-232 is an Electronics Industries Association (EIA) standard that specifies the

electrical, mechanical, and functional characteristics for serial binary

communication. It provides you with a variety of system configuration possibilities.

(RS-232 is a definition of electrical characteristics; it is not a protocol.)

One of the biggest benefits of the RS-232 interface is that it lets you integrate

telephone and radio modems into your control system (using the appropriate DF1

protocol only; not DH-485 protocol). The distance over which you are able to

communicate with certain system devices is virtually limitless.

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