12-2-2
Restrictions on the FTP Client Communications Instructions
The following restrictions apply to the FTP client communications instructions. Keep in mind these re-
strictions when you create the user program.
•
If you execute more than one FTP client communications instruction to read and write data in the
SD Memory Card at the same time, unexpected operation may result, such as reading data from a
file to which data is being written. Perform exclusive control of the instructions in the user program.
• If you execute an FTP client communications instruction to read or write data in the SD Memory
Card at the same time as another operation to read or write data in the SD Memory Card, unexpect-
ed operation may result, such as reading data from a file to which data is being written. Perform ex-
clusive control of the instructions in the user program. Refer to the NJ/NX-series CPU Unit Software
User's Manual (Cat. No. W501) for information on exclusive control of access to files in the SD
Memory Card.
12 FTP Client
12-8
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
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