Omron NJ501-1400 User Manual page 188

5 Troubleshooting
Checking for Non-fatal Errors
Use the following methods to check for non-fatal errors.
Checking method
Checking the indicators
Checking with the trouble-
shooting function of Sysmac
Studio
Checking with the Trouble-
shooter of an HMI
Checking with instructions that
read function module error sta-
tus
Checking with system-defined
variables
*1 Detailed information, such as error causes and corrections, is not displayed.
*2 To perform troubleshooting from an HMI, connect the HMI to the built-in EtherNet/IP port on the CPU Unit.
Refer to the appendices of the NJ/NX-series Troubleshooting Manual (Cat. No. W503) for the applicable range
of the HMI Troubleshooter.
This section describes the above checking methods.
Checking the Indicators
 Checking the Level of a Controller Error
You can use the PWR indicator on the Power Supply Unit and the RUN and ERROR indicators on
the CPU Unit to determine the event level for an error. The following table shows the relationship
between the Controller's indicators and the event level.
PWR (green)
Lit
Lit
Lit
5-8
You can use the indicators to confirm the Controller error level, the error status
of the EtherCAT Master Function Module, and the error status of the Ether-
Net/IP Function Module.
You can check for current Controller errors, a log of past Controller errors, error
sources, error causes, and corrections. You can also check error logs from CJ-
series Special Units.
You can check for current Controller errors, a log of past Controller errors, error
*2 sources, error causes, and corrections.
You can check the highest-level status and highest-level event code in the cur-
rent Controller errors.
You can check the current Controller error status for each function module.
Indicator
RUN (green)
Not lit
Lit
Lit
What you can check
*1
ERROR (red)
Lit Major fault level
Flashing (1-s intervals) Partial fault level
Minor fault level
Not lit Observation
NJ-series CPU Unit Hardware User's Manual (W500)
Event level