Non-Fatal Errors; Types Of Non-Fatal Errors - Omron NJ Series Troubleshooting Manual

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Non-fatal Errors

Non-fatal errors that occur are managed as events in the NJ-series Controller. You can check the event
to find out what type of error occurred.
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Types of Non-fatal Errors

Overview of Controller Events (Errors and Information)
You use the same methods to manage all of the events that occur on the NJ-series Controller. The
events that occur are saved in battery-backup memory in the CPU Unit. You can use the Sysmac Studio
or an NS-series PT to confirm current Controller events and the log of events that occurred before. This
log is called an event log.
To use an NS-series PT to check events, connect the PT to the built-in EtherNet/IP port on the CPU
Unit.
Check current Controller
events and the event log
of past events.
Sysmac Studio
Or
NS-series PT
Check current Controller
events and the event log
of past events.
The following events can occur.
 Controller Events
The Controller automatically detects these events. Controller events include events for the function
modules in the CPU Unit, EtherCAT slaves, and CJ-series Units.
The error logs from within the EtherCAT slaves and the CJ-series Special Units are not included.
Refer to the manuals for the slaves or Special Units for the procedures to read their error logs. You
can check the error logs from CJ-series Special Units on the Controller Event Log Tab Page of the
Sysmac Studio.
 User-defined Events
These are events that occur in applications that the user developed.
Refer to the NJ-series CPU Unit Software User's Manual (Cat. No. W501) for information on user-
defined events.
Non-fatal errors are managed as Controller events. This section describes mainly the Controller events.
NJ-series Troubleshooting Manual (W503)
NJ-series CPU Unit
PLC Function Motion Control
Event source
Module Function Module
Event logs
Backup battery
EtherCAT Master EtherNet/IP
Function Module Function Module
User program
Create User-defined
Error instruction:
SetAlarm
Create User-defined
Information
instruction: SetInfo
EtherCAT
slave
1 Overview of Errors
CJ-series
Units
Errors in
Special Units
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