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16
CompactFlash CARD
16.3 Precautions when Using CompactFlash Card
This section explains the precautions when using a CompactFlash card.
(1) CompactFlash card file/directory names
(2) CompactFlash card to be used
(3) When turning OFF or resetting programmable controller CPU
*1
(a) Do not create files
or folders on the CompactFlash card with a personal
computer.
If files or folders are created on the CompactFlash card with a personal computer,
they may be deleted.
*1: Excluding module operating files and recipe files
(b) Do not store files with file name containing unusable characters to CompactFlash
card.
For usable characters in file names, refer to the following section.
Appendix 4.2 Characters usable in file names, folder (directory) names
Use CompactFlash cards listed in Section 2.3.
Section 2.3 Connection System Equipment
If any other CompactFlash cards are used, a failure such as a data corruption on a
CompactFlash card or a system shutdown (SP.UNIT DOWN occurs in the
programmable controller CPU) may occur during an operation.
When a programmable controller CPU is turned OFF or reset while writing data to a
CompactFlash card, the processing to write data to a CompactFlash card may not be
completed. It may cause a loss of logging data during the processing, corruption of
data in the CompactFlash card that is being accessed, or occurrence of a file system
error. The file is automatically repaired when the high speed data logger module is
turned ON again, but it will not succeed in some cases.
The operation, turning OFF or resetting the high speed data logger module after
stopping file access, should be considered. For the important data, create backups by
performing a backup operation such as saving data to other media.
Section 16.6 (1) Stopping file access
16.3 Precautions when Using CompactFlash Card
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Troubleshooting
