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3 TROUBLESHOOTING
3.4 Troubleshooting by Symptom
Access using the file transfer function (FTP client) cannot be performed.
When the CPU module cannot access to the external device (FTP server) during execution of the file transfer function (FTP
client), check the following items and take action.
The time setting function (SNTP client) cannot be performed normally.
When the time setting function (SNTP client) cannot be performed normally, check the following items and take action.
If the above action does not solve the problem, perform the module communication test to check for hardware failure. (
Page 284 Module communication test)
*1
*1 The module communication test cannot be performed for the CPU module (built-in Ethernet port part). Perform the troubleshooting of
the CPU module and check for hardware failure. ( MELSEC iQ-R CPU Module User's Manual (Startup))
The access cannot be allowed/denied correctly by the IP filter.
When the access cannot be allowed/denied correctly by the IP filter, check the following items and take action.
Remote password does not work.
When the remote password does not work, check the following items and take action.
Check item Action
Is a value other than 0000H stored in (s1)+1 (Completion status) of the
SP.FTPPUT or SP.FTPGET instruction?
Take action for the error code stored in (s1)+1 (Completion status), and
execute the instruction again. ( Page 310 List of Error Codes)
Check item Action
Is the time setting function (SNTP client) is enabled for the Ethernet-equipped
module?
Set "Time Setting (SNTP Client)" under "Time Setting" of "Application
Settings" to "Use". ( Page 259 Time Setting)
Is "SNTP Server IP Address" set correctly? Change the "SNTP Server IP Address" under "Time Setting" in "Application
Settings" to the correct IP address. ( Page 259 Time Setting)
Check item Action
Is "Access from IP address below" correctly set in "IP Filter Settings" under
"Security" of "Application Settings"?
Correct the setting of "Access from IP address below".
Are the IP addresses set in "IP Address" in "IP Filter Settings" under "Security"
of "Application Settings"?
Correct the IP addresses.
When the IP addresses are specified by range, check also "IP Address
Excluded from Range".
Is the IP address of the proxy server set to be allowed? Set the IP address of the proxy server to be denied.
Check item Action
Is the remote password setting of the target connection disabled in the
"Remote Password Detail Setting" window?
If the remote password is disabled, change the setting so that it is enabled.
( Page 174 Remote password)
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