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File Memory Section 5-1
Note Not supported by CS-series CS1 CPU Units that are pre-EV1.
General-purpose Files
These files can be manipulated (read, written, etc.) using Programming
Devices (CX-Programmer or Programming Console), FINS commands,
instructions, or Auxiliary Area control bit operations. The file names can be
defined by the user.
Note 1. Not supported by CS-series CS1 CPU Units that are pre-EV1.
2. File names, represented by “********” above, consist of up to 8 ASCII char-
acters.
Files Automatically Transferred at Startup
This file is automatically transferred from the Memory Card to the CPU Unit
when the power is turned ON. There are two ways to transfer files automati-
cally at startup: transferring with a parameter file and transferring without a
parameter file.
Note Supported by CS/CJ-series CPU Units with unit version 2.0 or later.
The File column indicates the files that must be present in the Memory Card
to enable automatic transfer at startup.
Simple
Backup
Files
(See note.)
Ye s Ye s Ye s Ye s Ye s Ye s Ye s
CX-Pro-
grammer
Files
No No No Yes Yes Yes No
File type Corresponding file type
Program
file
Data
file
Parame-
ter file
Symbol
table file
Comment
file
Program
index file
Unit/
Board
backup
file
Type
Name
1
Extension Description Explanation
Program File ******** .OBJ User program • Contains the programs in the CPU Unit's cyclic and
interrupt tasks.
Parameter
Area File
******** .STD PLC Setup, regis-
tered I/O table,
routing tables,
CPU Bus Unit set-
tings, etc.
• Contains the CPU Unit's internal Parameter Area data.
• The user does not have to distinguish parameter data in
the file by type.
Data File ******** .IOM Specified range in
I/O memory
• Data from start to end word in
word units (16 bits) located in
one area.
• The area can be the CIO, HR,
WR, AR, DM, or EM Area.
Binary format
.TXT TXT format (non-delim-
ited or tab-delimited)
(See note 1.)
.CSV CSV format (comma-
delimited) (See note 1.)
Type of automatic
transfer
File name Purpose
Transfer with parameter file AUTOEXEC or
ATEXEC@@
Replacement due to a
change in the program
Transfer without parame-
ter file (See note.)
REPLACE or REPLC@@ Replacement due to a
change in the program and
network settings
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