Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual page 999

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Never remove the Memory Card from the CPU Unit when the BUSY indicator is lit. Press the

Memory Card power OFF button and wait for the BUSY indicator to go out before removing the

Memory Card. The Memory Card may become unusable if this is not done.

Insert the Memory Card with the label facing to the right. Do not attempt to insert it in any other

orientation. The Memory Card or CPU Unit may be damaged.

A few seconds will be required for the CPU Unit to recognize the Memory Card after it is

inserted. When accessing a Memory Card immediately after turning ON the power supply or

inserting the Memory Card, program an NC condition for the Memory Card Recognized Flag

(A343.15) as an input condition, as shown below.

File Memory Instructions

FWRIT(701) creates a data file containing the specified data from I/O memory. The file format can be

either binary or CSV. FWRIT(701) can also be used to add to an existing file or overwrite an existing file

from a specified position.

FREAD(700) reads the contents of a data file and stores it in the specified area of I/O memory. The file

format can be either binary or CSV. FREAD(700) can also be used to read data from a specified

position in a file.

TWRIT(704) creates a text file containing ASCII data stored in I/O memory. TWRIT(704) can also be

used to add to an existing file or overwrite an existing file.

CMND(490) can be used to format files, delete files, copy files, and change file names by sending FINS

commands for Memory Card operations.

Data structure of Files

For binary format (.IOM), the data will be as follows when 1234 hex, 5678 hex, 9ABC hex, and DEF0

hex are stored in the file ABC.IOM (although the user does not normally need to be concerned with this

CS/CJ/NSJ Series Instructions Reference Manual (W474)

Contents of ABC.IOM

48 bytes (reserved

for system use)

3. Instructions

Chapters

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