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

2 Instruction Descriptions
Related System-defined Variables
Name
_Card1Ready
*2
_Card1Protect
*2
_Card1Err
*2
_Card1Access
_Card1PowerFail
*1 For the NJ/NX-series, it is a precondition that the SD Memory Card is physically inserted and mounted normally. For an
NY-series Controller, it is a precondition that the shared folder is detected by the Controller.
*2 These variables are not used for the NY-series Controller. They are fixed to FALSE.
*3 For the NJ/NX-series, this indicates an access to the SD Memory Card. For an NY-series Controller, this indicates an
access to the shared folder.
Additional Information
The root directory of the file name is the top level of the SD Memory Card.
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 on page 2-3 for a timing chart for Execute, Done, Busy, and Error.
• If a file is open when the operating mode of the CPU Unit is changed to PROGRAM mode or when a
major fault level Controller error occurs, the file is closed by the system. Any read/write operations
that are in progress are completed to the end.
• For an NJ/NX-series CPU Unit, if a file is open when the power supply is stopped with the SD Mem-
ory Card power supply switch, the file is not corrupted.
• 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.
2-1308
Meaning Data type
SD Memory Card BOOL
Ready Flag
SD Memory Card Write BOOL
Protected Flag
SD Memory Card Error BOOL
Flag
SD Memory Card BOOL
Access Flag
SD Memory Card BOOL
Power Interruption Flag
Description
This flag indicates if the SD Memory Card can be
accessed by instructions and communications com-
*1
mands.
TRUE: Can be used.
FALSE: Cannot be used.
This flag indicates if the SD Memory Card is write pro-
tected when it is inserted and ready to use.
TRUE: Write protected.
FALSE: Not write protected.
This flag indicates if an unspecified SD Memory Card
(e.g., an SDHC card) is mounted or if the format is
incorrect (i.e., not FAT16 or corrupted).
TRUE: Error.
FALSE: No error.
This flag indicates if the SD Memory Card is currently
being accessed.
TRUE: Being accessed.
FALSE: Not being accessed.
This flag indicates if an error occurred in completing
processing when power was interrupted during
*3
access . This flag is not cleared automatically.
TRUE: Error.
FALSE: No error.

NY-series Instructions Reference Manual (W560)