Mitsubishi Electric MELSEC iQ-R Series User Manual page 392

Transient transmission failed
The following lists the actions to be taken if transient transmission cannot be performed with the target station, and the
engineering tool cannot perform monitoring.
Check item
Is the D LINK LED on the CC-Link IE TSN Plus module flashing or turned on?
Is the data link status of the target station normal?
Is the following control data of the module FB or dedicated instruction correct?
• CPU type of the target module
• Target network number
• Target station number
Is the network number overlapped on the network?
Are multiple link dedicated instructions with the same channel setting
executed simultaneously?
Is "  " displayed on the dot matrix LED of the CC-Link IE TSN Plus
module?
When "Connection
Device Information"
under "Basic Settings"
of the master station is
set to "CC-Link IE TSN
Class B Only"
When "Connection
Device Information"
under "Basic Settings"
of the master station is
set to "Mixture of CC-
Link IE TSN Class B/A
or CC-Link IE TSN
Class A Only"
18 TROUBLESHOOTING BY SYMPTOM
390
18.1 Troubleshooting Related to CC-Link IE TSN
Are CC-Link IE TSN Class A devices connected?
Is a general-purpose hub connected between CC-
Link IE TSN Class B devices?
Are nine or more CC-Link IE TSN Class B devices
and TSN hubs connected in total to each port of
the master station in the transmission path from the
master station to the CC-Link IE TSN Class B
device of the end?
Is a CC-Link IE TSN Class B device other than the
master station connected in a star topology via a
general-purpose hub?
Is a CC-Link IE TSN Class B device connected to
the master station via a general-purpose hub?
In multicast mode, is the CC-Link IE TSN Class A
remote station connected to the master station?
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?
In multicast mode, are a local station and a CC-
Link IE TSN Class A remote station connected on
the end side via a switching hub?
Is an Ethernet device connected to places other
than the end of the network?
Does the connected switching hub support the CC-
Link IE TSN Class used?
■For firmware version "02" or later
Is the event code 00C81 registered in the event
history?
Action
If turned off, perform troubleshooting for when the D LINK LED turns off or is
flashing. ( Page 365 When the D LINK LED turns off or is flashing)
In the CC-Link IE TSN/CC-Link IE Field diagnostics, identify the cause of the
error and take action. ( Page 372 CC-Link IE TSN/CC-Link IE Field
Diagnostics)
Correct the control data of the module FB or dedicated instruction.
Change the overlapped network number.
• Set a different channel to each instruction.
• Shift the execution timing of the link dedicated instructions.
Set 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.
Check the connected devices and reduce the number of CC-Link IE TSN
Class B devices and TSN hubs to eight or less in total for each port of the
master station in the transmission path from the master station to the CC-Link
IE TSN Class B device of the end.
• Other than the master station, do not connect CC-Link IE TSN Class B
devices to a general-purpose hub in the star topology.
• Connect CC-Link IE TSN Class B devices to a TSN hub.
• Check the connected device and connect the master station to CC-Link IE
TSN Class B devices in a line topology without using a general-purpose
hub.
• Check the connected device and connect the master station and CC-Link IE
TSN Class B devices to a TSN hub.
• Connect the CC-Link IE TSN Class A remote station to a local station or
remote station supporting the multicast filter.
• Set unicast mode.
• Configure settings with the switching hub so that the multicast frame (with
multicast MAC address 09:00:70:00:10:02 and 09:00:70:00:10:05) will not
be transferred to the port of the CC-Link IE TSN Class A remote station.
• Check the connected device and do not connect both a local station and a
CC-Link IE TSN Class A remote station on the end side of the switching
hub.
• Set unicast mode.
Check the connected device and connect the Ethernet device at the end of the
network.
Use the switching hubs that support "CC-Link IE TSN Class Setting" set to the
master station. For the models and usage methods of the switching hubs,
refer to the CC-Link Partner Association website (www.cc-link.org).
Change "CC-Link IE TSN Class Setting" under "Network Configuration
Settings" or "CC-Link IE TSN Class Setting" on the slave station side so that
"CC-Link IE TSN Class Setting" for each station match.