Rockwell-automation Logix5000 Controllers ASCII Strings Programming Ma Uživatelský manuál stáhnout pdf (Strana 5)

Table of contents

Studio 5000 environment ..................................................................................... 7

Additional resources ............................................................................................... 7

Chapter 1

Introduction ............................................................................................................ 9

Connect the ASCII device .................................................................................. 10

Configure the Serial Port .................................................................................... 10

Configure the User Protocol .............................................................................. 12

Create string data types ....................................................................................... 13

Read characters from the device ......................................................................... 14

Send characters to the device .............................................................................. 15

Enter ASCII characters ....................................................................................... 17

Chapter 2

Introduction .......................................................................................................... 19

Extract a part of a Bar Code ................................................................................ 19

Look up a Bar Code .............................................................................................. 20

Create the PRODUCT_INFO Data Type.............................................. 21

Search for the characters ............................................................................... 21

Identify the Lane Number ........................................................................... 22

Reject bad characters ..................................................................................... 22

Enter the Product IDs and Lane Numbers ............................................... 23

Check the Bar Code characters .......................................................................... 23

Convert a value ..................................................................................................... 24

Decode an ASCII message .................................................................................. 25

Build a string .......................................................................................................... 26

Appendix A

ASCII charter codes ............................................................................................. 29

Preface

Communicating with an ASCII

device

Processing ASCII characters

ASCII character codes

Index

Rockwell Automation Publication 1756-PM013D-EN-P - October 2014 5

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Rockwell-automation Logix5000 Controllers ASCII Strings Programming Ma Uživatelský manuál Strana 5