Mitsubishi Electric MELSEC iQ-R Series User Manual page 191

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 RJ71GN11-T2 turned off?
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
• Target IP address
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 RJ71GN11-T2?
When "Connection Device Are CC-Link IE TSN Class A devices connected?
Information" under "Basic
Settings" of the master station
is set to "CC-Link IE TSN Class
B Only"
Is a general-purpose hub connected between CC-Link
IE TSN Class B devices?
Action
If turned off, 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)
In the CC-Link IE TSN/CC-Link IE Field diagnostics, identify the
cause of the error and take action. ( Page 169 Checking the
Network Status)
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 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.
4 TROUBLESHOOTING
4.4 Troubleshooting by Symptom
4
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