Mitsubishi Electric MELSEC Q Series User Manual page 466

9 TROUBLE SHOOTING
Symptom
Data cannot be backed up
onto the CompactFlash
card.
Data cannot be restored
from the CompactFlash
card.
CompactFlash card
cannot be formatted.
The following occurs
when accessing the
CompactFlash card from
a personal computer, etc.
 The file size is displayed
as 0 byte.
 Spaces are added to the
end of the file data.
 A message of file error,
file entry error or file size
error is displayed and
the file cannot be
opened.
Files on CompactFlash
card are cleared at power-
off.
Symptom
Access to other station
cannot be made via Q
series-supported E71.
An error occurs when
accessing a redundant
CPU.
When the Web server
module is started up,
'Errors detected by the
access target CPU' (error
code: 4B00h) occurs.
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(9) Troubleshooting on data management and CompactFlash card
Check point
The CompactFlash card has not been
formatted.
The standard ROM or CompactFlash card
is being accessed.
The standard ROM or CompactFlash card
is being accessed.
The CompactFlash card is being accessed.
Whether the power status is ON or OFF,
the file access was not stopped before
removing or replacing the CompactFlash
card.
The CompactFlash card is an inapplicable
type.
(10) Troubleshooting on communication between Web server module
and access target CPU
Check point
A remote password has been set to the GX
Developer communication port (UDP/IP) of
Q series-supported E71 on the target or
relay station.
Access was made to the other station's
redundant CPU.
Continuous system switching has occurred.
The Web server module is accessing other
CPU or the other station via a network
module controlled by other CPU in the
multiple CPU system.
Corrective action
 Format the CompactFlash card.
 Wait until the access of the standard ROM
or CompactFlash card is completed.
 Wait until the access of the standard ROM
or CompactFlash card is completed.
 Wait until the access of the CompactFlash
card is completed.
 Whether the power status is ON or OFF, be
sure to execute the file access processing
before removing or replacing the
CompactFlash card. (Refer to Section 4.9)
 Execute either of the following to restore the
erroneous CompactFlash card.
1) Set the erroneous CompactFlash card
into the Web server module again.
Execute the file access stop processing
and remove the card. (Refer to Section
4.9)
2) Use the chkdsk command at the
command prompt of
Microsoft R Windows
 Change the CompactFlash card.
Corrective action
 Clear the remote password setting for the
GX Developer communication port
(UDP/IP) of Q series-supported E71 on the
target or relay station.
 Mount a Web server module on the
extension base unit of the access target
redundant CPU.
Access to redundant CPUs on other
stations is not allowed.
 Modify the system so that continuous
system switching will not occur.
 Clear the error in the Web server module
after starting up the CPU module in the
multiple CPU system. (Refer to Operating
Instructions "Precautions for using multiple
CPU system".)
MELSEC-Q
R for restoration.
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