Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

Precautions for Correct Use
• Execution of this instruction is continued until processing is completed even if the value of Execute
changes to FALSE or the execution time exceeds the task period. The value of Done changes to
TRUE when processing is completed. Use this to confirm normal completion of processing.
• Refer to Using this Section (page 2-3) for a timing chart for Execute, Done, Busy, and Error.
• For an NJ/NX-series CPU Unit, if a file is open and the SD Memory Card is removed before the SD
Memory Card power supply switch is pressed, the contents of the file will sometimes be corrupted.
Always turn OFF the power supply before removing the SD Memory Card.
• Even if data backup to the SD Memory Card is prohibited, you can execute this instruction to backup
the data. No error will occur.
• The values of the following system-defined variables that are related to backup do not change when
this instruction is executed.
• SD Memory Card Backup Command: _CardBkupCmd
• SD Memory Card Backup Status: _Card1BkupSta
• Do not read or write backup-related files during execution of this instruction. If you read a file that is
being written, unexpected processing may occur.
• Backup processing will continue even if the operating mode of the CPU Unit is changed during exe-
cution of this instruction. If you change the operating mode from RUN mode to PROGRAM mode and
then back to RUN mode, the value of Busy will be FALSE even if backup processing is in progress. If
you cancel backup processing under that condition, the value of Canceled will change to TRUE.
• An error will occur in the following cases. Error will change to TRUE.
• The SD Memory Card is not in a usable condition.
• The SD Memory Card is write protected.
• There is insufficient space available on the SD Memory Card.
• The maximum number of files or directories is exceeded.
• A file already exists with the same name as the name specified with DirName.
• The value of DirName is not a valid directory name.
• An error that prevents access occurs during SD Memory Card access.
• Another backup operation is already in progress.
• Backup processing failed.
Version Information
A CPU Unit with unit version 1.08 or later and Sysmac Studio version 1.09 or higher are required
to use this instruction.

NY-series Instructions Reference Manual (W560)

2 Instruction Descriptions
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