Applications - Omron CJ - PROGRAMMING MANUAL 08-2008 Programming Manual

File Memory
5-1-4

Applications

Data Files
ASCII Data Files
(.TXT and .CSV)
3. Data files with the TXT or CSV formats can be read and written only with
the FREAD(700) and FWRIT(701) instructions. They cannot be read and
written with a Programming Device.
4. Version V1.2 and higher versions of the CX-Programmer can be used to
transfer program files (.OBJ) between the computer's RAM and a storage
device.
5. With CS/CJ-series CPU Unit Ver. 2.0, files can be automatically transferred
to the CPU Unit at startup without a parameter file stored in the Memory
Card. This is achieved by changing the program file name to RE-
PLACE.OBJ. Data files can also be transferred along with REPLACE.OBJ
by using the following file names: REPLACE.IOM, REPLCDM.IOM, and
REPLCE@.IOM.
6. When transferring projects to a CS/CJ-series CPU Unit with unit version
3.0 or later from a CX-Programmer version 5.0 or higher, the symbol ta-
bles, comment files, and program index files can be stored in the comment
memory within the CPU Unit's internal flash memory (only if there is no
Memory Card or EM file memory, or no available area).
Backup files of the symbol tables, comment files, and program index files
that are stored in either the Memory Card, EM file memory, or comment
memory will be automatically created and stored in the Memory Card.
File memory can be used for the following applications.
In this application, DM Area data settings (for Special I/O Units, CPU Bus
Units, and Inner Boards (CS Series only)) are stored in the Memory Card. If
the data file is named AUTOEXEC.IOM, the settings stored in the file will be
automatically transferred when power is turned ON.
In this application, operation data (trends, quality control, and other data) gen-
erated during program execution is stored in EM file memory using the
WRITE DATA FILE instruction (FWRIT(701)).
Note Data that is often accessed, such as trend data, is better stored in EM file
memory rather than on a Memory Card.
Production data that has been saved on the Memory Card in the TXT or CSV
format can be transferred to a personal computer via a Memory Card Adapter
Data in an allocated DM area.
Example: ABC.IOM
Trends, etc.
EM file memory
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