Allen-Bradley Logix5000 Series User guide

CompactFlash File

System on

Logix5000

Controllers

1756-L61, 1756-L62, 1756-L63,

1756-L64, 1756-L60M03SE

Application Solution

Important User Information

Solid state equipment has operational characteristics differing from those of

electromechanical equipment. Safety Guidelines for the Application, Installation and

Maintenance of Solid State Controls (Publication SGI-1.1 available from your local

Rockwell Automation sales office or online at http://www.ab.com/manuals/gi)

describes some important differences between solid state equipment and hard-wired

electromechanical devices. Because of this difference, and also because of the wide

variety of uses for solid state equipment, all persons responsible for applying this

equipment must satisfy themselves that each intended application of this equipment is

acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or

consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes.

Because of the many variables and requirements associated with any particular

installation, Rockwell Automation, Inc. cannot assume responsibility or liability for

actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of

information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written

permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual, when necessary we use notes to make you aware of safety

considerations.

CompactFlash, Logix5000, Allen-Bradley, Rockwell Automation, TechConnect, PowerFlex, CompactLogix, ControlLogix, and RSLogix 5000

are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

WARNING Identifies information about practices or circumstances that can

cause an explosion in a hazardous environment, which may lead

to personal injury or death, property damage, or economic loss.

IMPORTANT Identifies information that is critical for successful application

and understanding of the product.

ATTENTION Identifies information about practices or circumstances that can

lead to personal injury or death, property damage, or economic

loss. Attentions help you:

•identify a hazard

•avoid a hazard

•recognize the consequence

SHOCK HAZARD

Labels may be on or inside the equipment (e.g., drive or motor) to

alert people that dangerous voltage may be present.

BURN HAZARD Labels may be on or inside the equipment (e.g., drive or motor) to

alert people that surfaces may reach dangerous temperatures.

3Publication LOGIX-AP007B-EN-P - January 2007

Table of Contents

Important User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Preface

Purpose of This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Who Should Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 1

CompactFlash Card

Enhancements Overview

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

CompactFlash Card Enhancements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Sample File Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CompactFlash File System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Possible Applications of the CompactFlash File System . . . . . . . . . . . . 9

Chapter 2

CompactFlash File System

Restrictions

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Restrictions of the File System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Number of Open Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Maximum Data Per Message. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Removal and Insertion of CompactFlash Card . . . . . . . . . . . . . . . 11

Minimum File Size/Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Memory Resources and Performance. . . . . . . . . . . . . . . . . . . . . . . 12

Controllers Supported . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Limited Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Read or Write Portions of a File . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Number of Files that Can Be Created . . . . . . . . . . . . . . . . . . . . . . 12

Chapter 3

CompactFlash Commands

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CF_Data_Working Tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Create Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Set Up the Create Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Write Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Set Up the Write Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Read Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Set Up the Read Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Delete Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Set Up the Delete Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Determine the Number of Bytes to Read or Write . . . . . . . . . . . . . . . 19

Chapter 4

Example Application

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Configure Message Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Set the Controller Slot Number . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Create a File on the CompactFlash Card . . . . . . . . . . . . . . . . . . . . . . . 23

Publication LOGIX-AP007B-EN-P - January 2007

4Table of Contents

Write Data to the CompactFlash Card . . . . . . . . . . . . . . . . . . . . . . . . . 26

Read Data from the CompactFlash Card . . . . . . . . . . . . . . . . . . . . . . . 28

Delete a File on the CompactFlash Card . . . . . . . . . . . . . . . . . . . . . . . 29

Build an Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Set Up Recipe Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Create the File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Write the Recipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Read the Recipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Delete the Recipe. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Appendix A

Format a CompactFlash Card

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Format with a Personal Computer and a CompactFlash Card Reader 35

Format RSLogix 5000 Software and a Logix5000 Controller with

CompactFlash Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Appendix B

Performance Data

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Performance Data Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Access 450 Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Access 4500 Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

Access 4500 Bytes with an HMI Load . . . . . . . . . . . . . . . . . . . . . . 44

Access 4500 Bytes with 16 Message Instructions. . . . . . . . . . . . . . 44

Access 4500 Bytes and Periodic Tasks . . . . . . . . . . . . . . . . . . . . . . 44

Appendix C

Troubleshoot the CompactFlash

File System

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Status User-defined Data Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Tag Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Message Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Appendix D

Expand the Code to Support More

than 4500 Bytes of Data

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Modify the Application to Access More Data . . . . . . . . . . . . . . . . . . . 49

Access 10,000 Bytes Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Modify the Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Modify the Data Element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Rockwell Automation Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

Installation Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

New Product Satisfaction Return . . . . . . . . . . . . . . . . . . . . . . . . . . 57

5Publication LOGIX-AP007B-EN-P - January 2007

Preface

Purpose of This Manual

This manual describes how you can use the CompactFlash file system on

Logix5000 controllers.

Who Should Use

This Manual

You should use this manual if you program applications that use

CompactFlash card and RSLogix 5000 programming software with the

following Logix5000 controllers:

•ControlLogix controller

Additional Resources

This table lists Logix products and documentation that may be valuable as you

program your application.

Related Documentation

To view or download these publications, go to:

http://www.literature.rockwellautomation.com.

To obtain a hard copy, contact your Rockwell Automation distributor or sales

representative.

Catalog

Number Title Publication

Number

1756-L61,

1756-L62,

1756-L63,

1756-L64,

1756-L60M03SE

Logix5000 Controllers Common Procedures

Programming Manual 1756-PM001

1756-L61,

1756-L62,

1756-L63,

1756-L64,

1756-L60M03SE

Logix5000 General Instruction Set Reference 1756-RM041

Publication LOGIX-AP007B-EN-P - January 2007

Notes:

7Publication LOGIX-AP007B-EN-P - January 2007

Chapter

CompactFlash Card Enhancements Overview

Introduction

This chapter reviews the enhancements for the CompactFlash file system.

CompactFlash Card

Enhancements

The CompactFlash file system has gone through several enhancements.

•Version 11: The CompactFlash card could only be used for saving

project image files with the NVS feature.

•Version 12: The CompactFlash card stored firmware as well as project

image files.

•Version 16: The CompactFlash card functionality has been extended to

include a file system that can be used for storing tag values, recipes, log

data, and other user data.

The CompactFlash file system as described in this document is available on the

following Logix5000 controllers, with version 16.x or later.

This document explains each feature and provides you with examples that

illustrate how to use those features. After you read and understand this

document and the examples, you will be able to add the CompactFlash file

system functionality to any of your programs.

Topic Page

CompactFlash Card Enhancements 7

Sample File Compatibility 8

CompactFlash File System Features 8

Possible Applications of the CompactFlash File System 9

ControlLogix Controller Version

1756-L6X/A 16.x

1756-L6X/B 16.x

1756-L60M03SE 16.x

Publication LOGIX-AP007B-EN-P - January 2007

8CompactFlash Card Enhancements Overview

Sample File Compatibility

This document is compatible with the sample projects, version 3.2, dated

January 2007.

•CF_Read_Write_V3_2.ACD

•CF_Read_Write_V3_2_Example.ACD

CompactFlash File System

Features

The file system has the ability to perform a variety of operations to read or

write data to the CompactFlash card. The following are the basic operations:

•Create a file

•Write to a file

•Read from a file

•Delete a file

There is an additional command, verification if a CompactFlash card is

present, but as a user you will not access this, this runs as a background check.

For each of the basic operations of the file system, there are related

functionality.

•Open a file

•Close a file

•Set the file pointer

•Calculate file checksums

•Verify file checksums

•Data parsing

•Error handling

The application code is set up to handle a file up to 4500 bytes in size.

For more information on how to increase file size, refer to Appendix D,

Expand the Code to Support More than 4500 Bytes of Data.

Publication LOGIX-AP007B-EN-P - January 2007

CompactFlash Card Enhancements Overview 9

Possible Applications of

the CompactFlash File

System

Using RSLogix 5000 software, version 16 or later, and using the application

provided in this publication, you can read and write data to the CompactFlash

card. This could include tag values, recipes, or data log information, just to

name a few.

A possible application would be to store a collection of recipes on the

CompactFlash card. Whenever a recipe needs data, it can be read from a file

on the CompactFlash card. Then if changes were made to the recipe the data

could then be written back to the CompactFlash card for later use.

CompactFlash cards can also be read and written to with a personal computer,

using a CompactFlash card reader. However, using the methods described in

this document, tag values will be written out as binary data to the

CompactFlash card.

Attempting to open the file in a text editor will work, but the contents

displayed will be the ASCII equivalent of the binary data. The application will

not allow for files to be created on a personal computer and then read into the

controller, because checksums are embedded into the data. If you create a file

on the personal computer, it will not have the checksums embedded. When

the data is read it will fail the checksum test.

There are numerous possibilities with this feature, but there are some clear

restrictions that are explained in Chapter 2, CompactFlash File System

Restrictions.

Publication LOGIX-AP007B-EN-P - January 2007

10 CompactFlash Card Enhancements Overview

Notes:

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