12 Troubleshooting
12-10
NJ-series CPU Unit Software User’s Manual (W501)
Checking Errors in the EtherCAT Master Function Module and EtherNet/IP
Function Module
For the EtherCAT Master Function Module and EtherNet/IP Function Module, use the EtherCAT and
EtherNet/IP NET ERR indicators to determine whether an error that affects process data communi-
cations has occurred and whether a minor fault level error or higher-level error has occurred. The
indicator lets you check the status given in the following table.
When an error occurs, you can connect the Sysmac Studio online to the Controller to check current
Controller errors and the log of past Controller errors.
Current Errors
Open the Sysmac Studio’s Controller Error Tab Page to check the current error’s level, source,
source details, event name, event code, cause, and correction. Errors are not displayed for observa-
tions.
Log of Past Errors
Open the Sysmac Studio’s Controller Event Log Tab Page to check the times, levels, sources,
source details, event names, event codes, details, attached information 1 to 4, actions, and correc-
tions for previous errors.
Error logs from CJ-series Special Units are displayed on the Controller Event Log Tab Page.
Detailed information is not displayed. To check detailed information, use the event codes that are
displayed and refer to the error codes that are given in the manual for the relevant Unit. Refer to the
NJ-series Troubleshooting Manual (Cat. No. W503) for the relationship between error codes and
event codes.
Refer to the NJ-Series Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for details on
troubleshooting with the Sysmac Studio.
If you can connect communications between an NS-series PT and the Controller when an error occurs,
you can check for current Controller errors and the log of past Controller errors.
To perform troubleshooting from an NS-series PT, connect the PT to the built-in EtherNet/IP port on the
CPU Unit.
Indicator Indicated status
EtherCAT NET ERR EtherCAT Master Function Module Status
• Lit: An error for which normal status cannot be recovered through user
actions (i.e., errors for which you must replace the CPU Unit or contact your
OMRON representative) has occurred.
• Flashing: An error for which normal status can be recovered through user
actions has occurred.
• Not lit: An error that affects process data communications has not occurred.
EtherNet/IP NET ERR EtherNet/IP Function Module Status
• Lit: An error for which normal status cannot be recovered through user
actions (i.e., errors for which you must replace the CPU Unit or contact your
OMRON representative) has occurred.
• Flashing: An error for which normal status can be recovered through user
actions has occurred.
• Not lit: There is no minor fault level or higher-level error.
Checking with the Troubleshooting Function of Sysmac Studio
Checking with the Troubleshooter of an NS-series PT
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