10 TROUBLESHOOTING
10.4 Troubleshooting by Symptom
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If the above actions do not solve the problem, perform the module communication test to check for hardware failure. (
Page 200 Module communication test)
When communication is unstable
When cyclic transmission delay time is long or when a transient transmission timeout occurs, check the following items.
If the above actions do not solve the problem, perform the module communication test to check for hardware failure. (
Page 200 Module communication test)
Does any of the stations breaks any restriction for the industrial switch (for CC-
Link IE TSN Class B)?
Follow the restrictions for the industrial switch (for CC-Link IE TSN Class B).
For the restrictions, refer to the manual for the industrial switch (for CC-Link
IE TSN Class B) used.
When "Communication Speed" of the master station is 1Gbps, does the cyclic
data size exceed 2K bytes in total for all device stations on the 100Mbps device
side at the boundary between a 1Gbps CC-Link IE TSN Class B device except
for the master station and the 100Mbps CC-Link IE TSN Class B device?
• Restrict the number of connected stations so that the cyclic data size of
100Mbps devices does not exceed 2K bytes in total.
• Connect 100Mbps device to the master station.
For firmware version "1.002" or earlier
In multicast mode, is the CC-Link IE TSN Class A remote station connected to
the master station?
• Connect the CC-Link IE TSN Class A remote station to a local station or
remote station supporting the multicast filter.
• Set unicast mode.
In multicast mode, is the CC-Link IE TSN Class A remote station connected to a
local station or remote station that does not support the multicast filter?
• Connect the CC-Link IE TSN Class A remote station to a local station or
remote station supporting the multicast filter.
• Set unicast mode.
For firmware version "1.010" or earlier
Is a CC-Link IE TSN Class A device that supports the CANopen profile with the
CC-Link IE TSN Protocol version 2.0 connected?
Update the firmware version of the master station to "1.020" or later.
Check item Action
Is the L ER LED of the FX5-CCLGN-MS turned on? Perform troubleshooting to be performed when the L ER LED turns on.
( Page 197 When the L ER LED turns on)
Is the ambient temperature for the module outside the specified range? Keep the ambient temperature within the specified range by taking action
such as removing heat source.
Is any error shown in "Selected Station Communications Status Monitor" of CC-
Link IE TSN/CC-Link IE Field diagnostics?
If an error occurs, perform a module communication test.
Is there any noise affecting the system? Change the installation of the modules and wiring so that the system is not
affected by noise.
Check item Action
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