2-3
2 Error Troubleshooting Methods
NJ-series Troubleshooting Manual (W503)
2-1 Troubleshooting Flowcharts
2
2-1-2 Troubleshooting Flowchart for Non-fatal Errors
For a non-fatal error, use the Sysmac Studio or an NS-series PT to troubleshoot the error with the fol-
lowing flowchart. You can use the indicators to check the following:
• Level
• Whether the error is in the EtherNet/IP Function Module or the EtherCAT Master Function Module
• If the sources of the error is the EtherNet/IP Function Module or the EtherCAT Master Function Mod-
ule, whether you can restore normal status yourself
2-1-2 Troubleshooting Flowchart for Non-fatal Errors
A
Lit.
Not lit.
Flashing.
Lit.Lit.
Flashing.Flashing.
Check all of the following branches that correspond to the
status of the EtherNet/IP NET ERR and EtherCAT NET
ERR indicators.
EtherNet/IP NET ERR indicator is lit or flashing.
EtherCAT NET ERR indicator is
lit or flashing.
Major fault
level
Observa-
tion
Error in the
EtherNet/IP Function
Module for which you
cannot restore normal
status by yourself.
Error in the
EtherNet/IP Function
Module for which you
can restore normal
status by yourself.
Error in the
EtherCAT Master
Function Module for
which you cannot
restore normal
status by yourself.
Error in the
EtherCAT Master
Function Module for
which you can
restore normal
status by yourself.
Error in PLC
Function Module or
MC Function
Module
To immediately check the
specific error
Non-fatal error
To check error status with the indicators
Both indicators are not lit.
Partial fault level or
minor fault level
ERROR indicator (red)?
EtherCAT NET ERR
indicator (red)?
EtherNet/IP NET ERR
indicator (red)?
Troubleshoot the error with the Sysmac Studio or NS-series PT.
Refer to 2-3 Troubleshooting Non-fatal Errors.
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