Ethernet Communication Cannot Be Established Between Personal Computer And C Intelligent Function Module - Mitsubishi Electric MELSEC iQ-R Series User Manual

Ethernet communication cannot be established between
personal computer and C intelligent function module
Issue PING command from the personal computer to the C intelligent function module, and check the response.
If the response is incorrect
Check the following items.
Check item
Is an Ethernet cable connected to the Ethernet port?
Are the IP address segments of the personal computer and the C intelligent
function module different?
Do the duplicate IP addresses with the personal computer and the C
intelligent function module exist in the connected LAN?
Do the IP address respond properly after the C intelligent function module is
replaced?
Is the IP address outside range specified?
Is the network in the overloaded conditions?
Is this blocked by IP filter function?
If using an RD55UP12-V, is the channel to be used set to "Not Use" in the IP
address settings?
If the response is normal
In conjunction with the symptoms occurred, perform troubleshooting.
CW Workbench connection fails
Check the following item.
Check item
Is "Target Server Options" of CW Workbench set properly?
Telnet connection fails
Check the following items.
Check item
Is the log in name and password correct?
Is the message "Sorry, session limit reached" displayed?
FTP connection fails
Check the following items.
Check item
Is the log in name and password correct?
Are there 11 or more FTP connections to one C intelligent function module?
An FTP connection can be established normally from the Windows
command prompt.
3 TROUBLESHOOTING
70
3.5 Troubleshooting by Symptom
Corrective action
Connect the Ethernet cable.
Set the same segments to both the personal computer and C intelligent
function module.
• If it is relayed through the LAN of another segment via the gateway, contact
the network administrator of the connected LAN.
Contact the LAN network administrator to eliminate the duplication of the IP
address.
Reset all terminals of the network to which the C intelligent function module is
connected.
Consider the following contents and set correct IP address.
• The IP address starts with a number from 1 to 233, excluding 127.
• No space is included in the IP address.
• The IP address is specified with single byte numbers only.
Disconnect the other Ethernet devices, and establish the connection only with
the C intelligent function module.
Access IP filter function from release or different IP address.
Change the setting for the channel to "Use," and set its IP address, subnet
mask, and default gateway.
Corrective action
Set "Target Server Options" of CW Workbench properly.
Corrective action
Enter correct log in name and password. If the password is not known, reset
log in name and password by initializing C intelligent function module.
Terminate the Telnet connection from another personal computer and take any
of the following actions:
• Reconnect after the Telnet connection timeout time has elapsed.
• Turn the power OFF and ON, or reset the CPU module.
Corrective action
Enter correct log in name and password. If the password is not known, reset
log in name and password by initializing C intelligent function module.
Make an adjustment so that the number of FTP connections becomes 10 or
less.

Change FTP client tool, which can connect successfully.