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10 TROUBLESHOOTING
10.1 Checking with LED
When the D LINK LED turns off or is flashing
When the D LINK LED turns off or is flashing, check the following.
Check item Action
Is the master station operating normally? • If an error occurs in the FX5 CPU module on the master station, eliminate the cause of
the FX5 CPU module error.
• If an error occurs in the FX5-CCLGN-MS on the master station, take action according to
the module diagnosis procedure.
Is the master station connected to the network? Connect the master station to the network.
Does the IP address of each station match the "Network
Configuration Settings" of the master station?
Correct the setting of the IP address in "Network Configuration Settings" of the master
station.
• Set IP addresses in a way that does not duplicate the third to fourth octets of the IP
address in all stations.
• Set the IP address and subnet mask to match the network addresses of all stations.
• Set the third and fourth octets of the IP address to values other than all 0 or all 1.
• Set the host section to a value other than all 0 or all 1.
• Set an address other than some reserved addresses fixed for special purposes as the IP
address.
In the "Network Configuration Settings" of the master station, are
the third and fourth octets of the IP address duplicated with those
of any other stations?
In the "Network Configuration Settings" of the master station,
does the network address (the subnet mask part of the IP
address) match the master station?
Are the third and fourth octets of the IP address set to values
other than all 0 or all 1?
Is the host section set to a value other than all 0 or all 1?
Is there a reserved address fixed for a special purpose set as the
IP address?
Do the used Ethernet cables conform to the Ethernet standard? Replace the cables with Ethernet cables which conform to the standard. ( Page 15
Performance Specifications of CC-Link IE TSN)
Is the industrial switch used operating normally? • Use an industrial switch that conforms to the standard. ( Page 15 Performance
Specifications of CC-Link IE TSN)
• Power off and on the industrial switch.
Does the station-to-station distance meet the specifications? Set the station-to-station distance within range. ( Page 15 Performance Specifications
of CC-Link IE TSN)
Does the cabling condition (bending radius) meet the
specifications?
Refer to the manual for the Ethernet cable, and correct the bending radius.
Is any Ethernet cable disconnected? Replace the Ethernet cable.
Is the network configured in the ring topology? Configure the network to avoid the ring topology.
Has the time synchronization source station been reset? • Since a station is temporarily disconnected after switching the time synchronization
source, wait for it to return.
• Avoid unnecessary disconnections or returns in a station that is the time synchronization
source.
Is the time synchronization source station turned off?
Is the time synchronization source station operating normally? Take action by referring to the manual for the time synchronization device.
Has any other station been reset? • Avoid unnecessary reset since a station is disconnected while resetting.
• Start other stations.
Are other stations turned off? Power on other stations.
Are other stations connected to the FX5-CCLGN-MS operating
normally?
Execute the CC-Link IE TSN/CC-Link IE Field diagnostics from the master station to
identify the faulty module of another station. After identification, take action by referring to
the manual for the relevant module.
Is there any other station with no IP address setting? Set an IP address to a device station with no IP address setting.
Is there any other station that is not set in the network
configuration of the master station?
Set connected device stations in the network configuration of the master station.
Is a type of wiring described in the restrictions in the wiring
specifications mistakenly performed?
Correct the wiring. ( Page 125 WIRING)
Are station numbers unique? Change the duplicated station number.
Is the IP address duplicated with another station? Change the IP address of the duplicated station.
Does the number of device stations connected exceed the
maximum number of connectable stations? (When used as a
master station)
Are 121 or more device stations connected? (When used as a
local station)
Ensure that when the master station operates, the number of device stations connected is
within the maximum number of connectable stations specified in the CC-Link IE TSN
performance specifications.
Page 15 Performance Specifications of CC-Link IE TSN
When the local stations operate, configure the system in which the number of connecting
device stations is not more than 120.
Do CC-Link IE TSN devices and Ethernet devices coexist? Correct the wiring. ( Page 125 WIRING)
Does the IP filter setting mistakenly block communications from
the IP address of another station?
Change the IP filter setting parameter to allow communication for the IP address of
another station.
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