Mitsubishi Electric MELSEC iQ-R Series User Manual page 186

Cyclic transmission failed
The following lists the actions to be taken if cyclic transmission cannot be performed.
Check item
Is the D LINK LED of the RJ71GN11-T2 turned on?
Do the station types set in "Network Configuration Settings" under "Basic
Settings" of the master station match those set for the connected slave
stations?
When "Connection Device Information" under "Basic Settings" is set to "CC-
Link IE TSN Class B Only", is a dedicated TSN hub used?
When "Communication Speed" under "Application Settings" of the master
station is set to "100Mbps", is "System Reservation Time" in "Communication
Period Setting" under "Basic Settings" of the master station set to 20s?
Is "  " displayed on the dot matrix LED of the RJ71GN11-T2?
When "Connection
Device Information"
under "Basic Settings"
of the master station is
set to "CC-Link IE TSN
Class B Only"
4 TROUBLESHOOTING
184
4.4 Troubleshooting by Symptom
Are CC-Link IE TSN Class A devices connected?
Is a general-purpose hub connected between CC-
Link IE TSN Class B devices?
Action
Perform troubleshooting for when the D LINK LED turns off or is flashing.
( Page 163 When the D LINK LED turns off or is flashing)
Check 'Station type match status of each station' (SB00E8) and 'Station type
match status' (SW00E8 to SW00EF) to correct the station type of stations in
which the station type does not match.
• Correct the used switching hub and the switching hub settings. For the
setting method, refer to the manual for the switching hub used.
• When using a TSN hub, check the precautions and restrictions for system
configuration on the CC-Link Partner Association website (www.cc-link.org).
• Correct the switching hub delay time according to the switching hub used.
( Page 293 Communication cycle intervals) For the switching hub delay
time, refer to the manual for the switching hub used.
Set "System Reservation Time" to 200s.
• Set the module parameters.
• Check the firmware version of the RJ71GN11-T2. When module
parameters that are not supported are set, upgrade the firmware version or
correct the module parameters.
• Check the connected device and disconnect the CC-Link IE TSN Class A
devices.
• When connecting a CC-Link IE TSN Class A device, set "Connection
Device Information" of the master station to "Mixture of CC-Link IE TSN
Class B/A or CC-Link IE TSN Class A Only".
Check the connected device and disconnect the general-purpose hub or
replace it with a TSN hub.