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

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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
6
Notes:

7Publication LOGIX-AP007B-EN-P - January 2007
Chapter 1
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.

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10 CompactFlash Card Enhancements Overview
Notes: