File Access Fails; Connection With Peripherals Fails; File Read (Download) Fails - Mitsubishi Electric MELSEC iQ-R C User Manual

File access fails

Check the following items.
Check item
Is the CARD RDY LED turned OFF when the read/write target is an SD
memory card?
Is the SD memory card write-protected when write target is the SD memory
card?
Is there free space in the write target drive?
Is the user program that uses the write target file running?
Has a file system error occurred in an SD memory card?
Is the network in the overloaded conditions?
SD memory card file system diagnostics and recovery
In SD memory card diagnostics, use chkdsk command.
While using chkdsk command, execute the following tools in a format such that the task is always restarted by sp command.
• CW Workbench Shell
• Telnet
For chkdsk command details, refer to VxWorks manual.
Precautions
An error such as the stored files are deleted when the file system is recovered may occur. Back up the program files and data
before file system recovery and write those program files and data after the file system recovery.

Connection with peripherals fails

Check the following items.
Check item
Is the network in the overloaded conditions?

File read (download) fails

Check the following items.
Check item
Is the transfer mode of FTP correct?
3 TROUBLESHOOTING
58
3.5 Troubleshooting by Symptom
Corrective action
Insert or re-insert SD memory card.
Cancel the write protection of the SD memory card.
Secure a free space in the write target drive.
Change the write target to another drive.
Stop the user program that is using the write target file.
Restore the file system in the SD memory card.
Disconnect the other Ethernet devices, and establish the connection only with
the C intelligent function module.
Corrective action
Disconnect the other Ethernet devices, and establish the connection only with
the C intelligent function module.
Corrective action
Change the transfer mode of FTP to an appropriate mode.