Troubleshooting By Symptom - Mitsubishi Electric RD77GF8 User Manual

4.4

Troubleshooting by Symptom

This section describes troubleshooting method by symptom. Perform these troubleshooting if data link cannot be performed
even though no error is detected in the Simple Motion module. If an error has occurred in the Simple Motion module, identify
the error cause using the engineering tool. (Page 105 Checking the Network Status)
When cyclic transmission cannot be performed
The following lists the actions to be taken if cyclic transmission cannot be performed.
Check item
Is the D LINK LED of the master or slave station turned off or flashing?
Is a slave station specified as a reserved station in "Network Configuration
Settings" of "Basic Settings" of the master station?
Is "RX/RY Setting" or "RWw/RWr Setting" for slave stations configured in
"Network Configuration Settings" under "Basic Settings" of the master station?
Do the station Nos. set in "Network Configuration Settings" under "Basic
Settings" of the master station match those set for corresponding slave
stations?
Do the station types set in the network configuration settings of the master
station match those set for the connected slave stations?
Is the range set in "Refresh Settings" of "Basic Settings" correct?
Is any refresh target device in "Refresh Settings" of "Basic Settings"
overlapped with that of another network module?
Are the transfer ranges set in "Interlink Transmission Settings" of "Application
Settings" correct?
Are the source and destination modules set in "Interlink Transmission
Settings" of "Application Settings" correct?
Is the station No. of the Simple Motion module duplicated with any of the other
stations?
When transient transmission cannot be performed
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 master or slave station turned off?
Is the baton pass status of the destination normal?
Are the following control data of the dedicated instruction correct?
• CPU type of the target module
• Target network No.
• Target station No.
Is the station No. of the Simple Motion module duplicated with any of the other
stations?
Is the network No. duplicated on the network?
Is a communication path by the dynamic routing function is determined?
Does the relay station to be passed support the dynamic routing function?
Are multiple link dedicated instructions with same channel setting executed
simultaneously?
If the above actions do not solve the problem, perform the following tests to check for an error.
• Communication Test (Page 38 Communication test)
Action
Perform troubleshooting for when the D LINK LED turns off or is flashing.
(Page 101 When the D LINK LED turns off or is flashing)
Cancel the reserved station setting. (Page 67 Network Configuration
Settings)
Set RX/RY or RWw/RWr range for each slave station. (Page 70 Refresh
Settings)
Correct station Nos.
Correct the station type set in "Network Configuration Settings" under "Basic
Settings" of the master station.
Correct the range setting in "Refresh Settings" of "Basic Settings". (Page
70 Refresh Settings)
Correct the range setting in "Refresh Settings" of "Basic Settings". (Page
70 Refresh Settings)
Correct the transfer ranges set in "Interlink Transmission Settings" of
"Application Settings". (Page 77 Interlink Transmission Settings)
Correct the source and destination modules set in "Interlink Transmission
Settings" of "Application Settings". (Page 77 Interlink Transmission
Settings)
Change the duplicated station No.
Action
Perform troubleshooting for when the D LINK LED turns off or is flashing.
(Page 101 When the D LINK LED turns off or is flashing)
In the CC-Link IE Field Network diagnostics, identify the cause of the error
and take action. (Page 105 Checking the Network Status)
Correct the control data of the dedicated instruction.
Change the duplicated station No.
Change the duplicated network No.
• Power on the system and start transient transmission after a while.
• When "Dynamic Routing" under "Application Settings" of the station on the
communication path is set to "Disable", change it to "Enable".
If the relay station to be passed does not support the dynamic routing function,
set all the stations on the communication path in "Routing Setting" of "CPU
Parameter".
• Set different channel to each instructions.
• Shift the execution timing of the link dedicated instructions.
4.4 Troubleshooting by Symptom
4 TROUBLESHOOTING
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