Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 146

When communications with Ethernet devices cannot be performed
When communications (CC-Link IE TSN/CC-Link IE Field diagnostics, transient transmission, remote password, or
communication test) with Ethernet devices cannot be performed, check the following items.
Check item
Is the firewall or proxy server setting enabled on the Ethernet device?
Is the antivirus software on the Ethernet device blocking the communication?
For details when communications of GX Works3 are not allowed in the firewall settings of Windows, refer to
the following.
 GX Works3 Operating Manual
When the link device cannot communicate although the data link is normal
When the link device cannot communicate although the data link is normal (D LINK LED is on), check the following items.
Check item
Is "Reserved/Error Invalid Station" of the device station set to "Reserved
Station" in "Network Configuration Settings" of the master station?
Is the input/output bit setting or input/output word setting of the device station
set in "Network Configuration Settings" of the master station? (Simple display)
Are "RX Setting", "RY Setting", RWw Setting", "RWr Setting", "LB Setting",
and "LW Setting" of the device station set in "Network Configuration Settings"
of the master station? (Detailed display)
Does the device station support the link devices set in "Network Configuration
Settings" of the master station?
Is the link refresh setting range correct?
Is the refresh range of "CPU Side" in "Refresh Settings" duplicated with that of
"CPU Side" of another network module?
When a communication time-out occurs on the engineering tool
Check items and corrective actions for when a communication time-out occurs on the engineering tool are described below.
Check item
Is the operation cycle set for the operation cycle time
sufficiently long?
8 TROUBLESHOOTING
144
8.4 Troubleshooting by Symptom
Action
Check and correct the firewall and proxy server settings on the Ethernet
device such as checking if a response to the PING command (ICMP echo
request) is disabled.
Check and correct the antivirus software settings on the Ethernet device.
• Is the security setting level of the antivirus software low?
• Is a response to the PING command (ICMP echo request) disabled in the
firewall settings?
Action
Set "Reserved/Error Invalid Station" of the device station to "No Setting".
Set a link device used in the device station correctly.
Set a link device used in the device station correctly.
Correct the link devices to be assigned to the device station in "Network
Configuration Settings" of the master station.
Correct the setting in "Refresh Settings" of "Basic Settings".
Correct the setting in "Refresh Settings" of "Basic Settings".
Action
Check the positioning details, or change the setting of the network parameter "Communication
cycle interval setting" to a longer value. (Page 201 Communication cycle intervals)
In addition, when a communication time-out occurs when performing flash ROM writing or
parameter initialization from the engineering tool, perform communication load reduction by
turning OFF the power supply of the connected servo amplifier, etc., to shorten the operation
processing time.