Mitsubishi Electric MELSEC Q Series User Manual page 465

9 TROUBLE SHOOTING
Symptom
Event is not notified.
Symptom
File cannot be
transferred to the Web
server module.
File cannot be
transferred from the
Web server module.
The execution of the
FTPPUT/FTPGET
instruction failed.
426 (Data connection
error) error occurs during
file transfer via FTP.
A file cannot be
downloaded from the
Web server module.
9 - 10
Check point
The access target CPU setting is not correct.
The event setting is not correct.
 Check whether e-mail can be sent to the
specified destination with commercial e-
mail software.
 Check whether a file can be transferred to
the specified destination with commercial
FTP client software.
(8) Troubleshooting on FTP
Check point
The Web server module is not connected to
the network correctly.
The FTP server setting is not correct.
Check whether a file can be transferred to
the specified destination with commercial
FTP client software.
The FTP account is not correct.
The programmable controller CPU has been
powered on right after powered off.
When accessing by the Internet Explorer
the user authentication screen was not
displayed.
The DNS server setting is not correct.
File transfer has not been performed for
QCPU or RCPU.
FTPPUT/FTPGET instruction has not been
executed for QCPU or RCPU.
FTP transfer has been executed with many
files specified at one time.
Check that the file display format of the Web
server module is not text format in access
®
using Internet Explorer
 Check the access target CPU setting.
 Check the event setting (condition, etc.).
 Contact the Internet service provider.
 Contact the administrator of the FTP
 Check the module status and network
 Check the FTP setting.
 Contact the administrator of the FTP server.
 Check the FTP account assigned by the
 Power on the programmable controller a
 Enter the Web server module address as
®
,
 Check the DNS server setting.
 QCPU and RCPU cannot be used as an
 QCPU and RCPU cannot be used as an
 Reduce the number of files to be transferred
 Change the file display format to explore
.
(From the previous page)
Corrective action
(Refer to Section 4.6.7)
(Refer to Section 6.5.3)
server.
Corrective action
connection status of the Web server
module. (Refer to (1), (2) in this section.)
(Refer to Section 6.7.3)
Internet service provider.
few minutes after power-off.
follows:
[ftp://<User name>:<Password>@<Web
server module address or host name>/]
(Example) In the case of factory setting:
ftp://QJ71WS96:MITSUBISHI@192.168.3.3/
(Refer to Section 4.6.3 (3))
FTP server. (Refer to Section 6.7.2)
FTP server. (Refer to Section 6.7.2)
at one time, and execute the FTP instruction
again.
format. (Refer to Section 6.7.1 (5).)
MELSEC-Q
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