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File Memory Section 5-1
Note 1. The following backup files can be created only when using CS/CJ-series
CPU Units with unit version 3.0 or later.
Symbol table files, comment files, and program index files
These files are automatically created from the files in either the Memory
Card, EM file memory, or comment memory.
2. One example of the CPU Bus Unit settings would be the Data Link Tables.
Refer to the operation manuals for specific Units for other setup data.
CX-Programmer Files
• These files are created by the CX-Programmer. The file names created in
file memory are fixed. When a project is transferred, any one of the follow-
ing memory options can be selected as the transfer destination for these
CX-Programmer files.
•Memory Card
• EM file memory
Data file BACKUP
.IOM
DM Area words allocated to
Special I/O Units, CPU Bus
Units, and Inner Boards (CS
Series only)
Contains DM data from D20000 to D32767.
BACKUPIO
.IOR
I/O memory data areas • Contains all of the data in the CIO, WR, HR, and
AR data areas as well as timer/counter Comple-
tion Flags and PVs.
Note CIO Area, Work Area, Timer Completion
Flags, timer present values, and forced sta-
tus are cleared when data is read from the
Memory Card at startup (default behavior)
The PLC Setup, however, can be used to
hold the status of the IOM Hold Bit and the
Forced Status Hold Bit.
BACKUPDM
.IOM
General-purpose DM Area Contains DM data from D00000 to D19999.
BACKUPE@
.IOM
General-purpose EM Area • Contains all of the EM data for EM bank @ with
addresses ranging from E@_00000 to E@_32767.
(The maximum bank number depends upon the
model of CPU Unit being used.)
• When data is backed up to the Memory Card, all
of the data in each EM bank is automatically writ-
ten to a separate file.
Unit/Board
backup files
BACKUP@@
.PRM
(where @@ is
the unit
address of the
Unit/Board
being backed
up)
Data for Unit or Board • Control backup data from one Unit or Board.
Refer to 5-2-6 Simple Backup Function for details.
Symbol table files
(See note 1.)
BKUPSYM
.SYM
Global symbol tables, local
symbol tables, and automati-
cally allocated area setup data
Includes the following data within the CX-Program-
mer’s global/local symbol table:
Variables, addresses, data types, I/O comments
Includes the data set in the CX-Programmer’s auto-
matic PLC address allocation settings.
Comment files
(See note 1.)
BKUPCMT
.CMT
Rung comments and comments CX-Programmer rung comments and comments.
Program index
files (See note 1.)
BKUPPRG
.IDX
CX-Programmer section names
and section comments.
CX-Programmer section delimiter data (The delim-
iter location, however, depends on the section
delimiter within the program.)
Type Name Description Explanation
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