Chapter 3 Introduction - Allen-Bradley Logix5000 Series Application Book

Introduction
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CompactFlash Commands
This chapter describes four of the CompactFlash commands, the ControlFlash
Data Working Tag, and how to determine the number of bytes to read or write.
Topic
CF_Data_Working Tag
Create Command
Write Command
Read Command
Delete Command
Determine the Number of Bytes to Read or Write
The file system has the ability to perform a variety of operations to read or
write data to the CompactFlash card. There are four basic commands that you
can access:
• 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.
Chapter
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Publication LOGIX-AP007B-EN-P - January 2007
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