Mitsubishi Electric MELSEC iQ-R Series User Manual page 164

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 of the Motion module turned off?
Is the data link status of the target station normal?
Is the following control data of the dedicated instruction correct?
• CPU type of the target module
• Target network number
• Target station number
• Target IP address
Is the network No. overlapped on the network?
Are multiple link dedicated instructions with the same channel setting executed
simultaneously?
When "Connected Device
Information" under "Basic
Settings" of the master station is
set to "CC-Link IE TSN Class B
Only"
When "Connected 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"
4 TROUBLESHOOTING
162
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?
■When the version of Add-on baseSystem is
"1.18" or earlier
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 the CC-Link IE TSN Class B device other
than the master station connected with a
general-purpose hub in star topology?
Is the master station connected with CC-Link IE
TSN Class B devices via a general-purpose
hub?
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?
■When the version of Add-on baseSystem is
"1.20" 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 141 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 146 Checking the Network Status)
Correct the control data of the dedicated instruction.
Change the overlapped network No.
• Set a different channel to each instruction.
• Shift the execution timing of the link dedicated instructions.
• 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 device 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 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 line topology instead of using a
general-purpose hub.
• Check the connected device and connect the master station and CC-
Link IE TSN Class B devices using a TSN hub.
• Connect the local station or remote station supporting the multicast
filter to the CC-Link IE TSN Class A remote station.
• 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" on the device station side so that
the CC-Link IE TSN Class settings for each station match.