Omron CJ - PROGRAMMING MANUAL 08-2008 Programming Manual page 251

File Memory
Note
Backup Data Files
Note This part of the DM Area is allocated to Special I/O Units, CPU Bus Units, and
Inner Boards.
When creating the data files listed above, always specify the first address
shown above (D20000, D00000, or E@_00000) and make sure that the size of
the file does not exceed the capacity of the specified data area.
All of the data in each file will always be transferred starting at the specified
first address (D20000, D00000, or E@_00000).
1. When creating the AUTOEXEC.IOM, ATEXECDM.IOM, and ATEX-
ECE@.IOM files or the REPLACE.IOM, REPLCDM.IOM, or RE-
PLCE@.IOM files from a Programming Device (Programming Console or
CX-Programmer), always specify the proper first address (D20000,
D00000, or E@_00000) and make sure that the size of the file does not ex-
ceed the capacity of the DM Area or specified EM bank. The contents of
the file will always be transferred starting at the proper first address
(D20000, D00000, or E@_00000) even if another starting word is speci-
fied, which could result in the wrong data overwriting the contents of that
part of the DM Area or EM bank. Furthermore, if the capacity of the DM
Area or EM bank is exceeded (as is possible when making settings from
the CX-Programmer), the remaining data will be written to EM bank 0 if the
DM Area is exceeded or the following EM bank if an EM bank is exceeded.
2. When using the CX-Programmer, you can specify a data file that will ex-
ceed the maximum DM Area address D32767 or maximum EM Area ad-
dress of E@_32767. If the AUTOEXEC.IOM file exceeds the boundary of
the DM area, all remaining data will be written to the EM Area starting at
E0_00000 and continuing in order of memory address and banks through
the final bank. It is thus possible to automatically transfer data to both the
DM and EM Areas at startup. Likewise, if the ATEXECE@.IOM file is larger
than an EM bank, the remaining data will be written to subsequent EM
banks.
3. The System Setups for Special I/O Units, CPU Bus Units, and the Inner
Board (CS Series only) can be changed by using different AUTOEX-
EC.IOM files containing different settings for the Special I/O Unit Area
(D20000 to D29599), CPU Bus Unit Area (D30000 to D31599), and the In-
ner Board Area (CS Series only, D32000 to D32099). Memory Cards can
thus be used to create libraries of System Setup data for Special I/O Units,
CPU Bus Units, and Inner Boards (CS Series only) for different systems or
devices.
The backup function creates 4 kinds of data files as described below.
To backup data, turn pin 7 ON on the CPU Unit's DIP switch, insert the Mem-
ory Card, and press and hold the Memory Card Power Supply Switch for three
seconds. The four backup files (BACKUP.IOM, BACKUPIO.IOR, BACK-
UPDM.IOM, and BACKUPE@.IOM) will be created automatically and written
to the Memory Card.
The four backup files are used exclusively by the backup function, although
three of the files (BACKUP.IOM, BACKUPDM.IOM, and BACKUPE@.IOM)
can be created with Programming Device operations. (BACKUPIO.IOR can-
not be created with Programming Device operations.)
Section 5-1
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