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7 File Operations
CJ2 CPU Unit Software User’s Manual
7-3 File Memory Operations
7
7-3-1 Types of File Memory Operations
7-3 File Memory Operations
The following can be performed to use file memory:
• Procedures from the CX-Programmer
• Automatic transfer at startup
• Simple backup function
• FREAD(700) and FWRIT(701) instructions
• Replacement of the entire program using Auxiliary Area control bits
• FINS commands
Refer to the CX-Programmer operation manual for details on the following procedures.
z Transferring Data in the Memory Card Dialog Box of the CX-Programmer
The following files can be created, read, and written.
• Files automatically transferred at startup (program/network symbol files, data files, parameter
files)
• General-purpose files (program/network symbol files, data files, parameter files)
• CX-Programmer files (symbol tables, comment files, program index files)
z Transferring Data Online/Offline
General-purpose files (i.e., program/network symbol files, data files, and parameter files) can be
transferred online to the PLC or offline to a computer memory device.
Changeover programs, parameters, and I/O memory can be stored in a Memory Card and read from
the Memory Card at startup. (Refer to Section 10 CPU Unit Functions for details.)
The simple backup operation enables backing up and restoring all PLC data, including data in the CPU
Unit, Special I/O Units, and CPU Bus Units, to and from a Memory Card without requiring a Program-
ming Device. (Refer to the CJ2 CPU Unit Hardware User’s Manual (Cat. No. W472) for details.)
7-3-1 Types of File Memory Operations
Procedures from the CX-Programmer
Files Transferred Automatically at Startup
Simple Backup Operation
AUTOEXEC
.OBJ
AUTOEXEC
.OBJ
AUTOEXEC
.OBJ
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