Mitsubishi MELSEC Q Series User Manual

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18.6 Diagnostics and Restoration of Standard ROM and CompactFlash Card Drives
18
TROUBLESHOOTING
18.6 Diagnostics and Restoration of Standard ROM and
CompactFlash Card Drives
An error may occur in the file system if the standard ROM drive or CompactFlash card
drive is used incorrectly.
The following describes how to diagnose and restore the system when an error has
occurred.
(1) How to diagnose the FAT file system of the drive
The file systems of the standard ROM drive and CompactFlash card drive use the
FAT format.
Use the following tools to diagnose the FAT format structure.
(a) VxWorks-standard "chkdsk" command
Execute the "chkdsk" command with any of Shell, Telnet tool, and user program.
( This section (3))
(b) "scandisk" command of personal computer (Windows ) (CompactFlash
card only)
In the case of a CompactFlash card, errors can be also checked by the "scandisk"
command of a personal computer (Windows ).
(2) How to restore the FAT file system of the drive
If an error is detected in the file system, the FAT format can be restored by either of
the following methods.
• Use the restore function of the "chkdsk" command ( This section (3))
• Reformat with the format command( Section 5.10 (4))
If the file system is not restored or if the standard ROM drive cannot be formatted by
either of the above methods, please consult your local Mitsubishi service center or
representative, explaining the details of the problem.
POINT
1. When the FAT file system is restored, the stored files may be erased or some
of them may be corrupted.
Back up the necessary program files and data before restoration, and write
the backed up files and data again after restoration.
2. When the file system restoration is performed for the standard ROM, execute
parameter write with the C Controller setting utility.
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Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English