Omron NJ Series Troubleshooting Manual

1-5
1 Overview of Errors
NJ-series Troubleshooting Manual (W503)
1-3 Non-fatal Errors
1
1-3-1 Types of Non-fatal Errors
1-3 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.
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 and NX-series Slave Terminals.
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.
Note Refer to the manual for the Communications Coupler Unit for details on the event log in a Slave Terminal.
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, NX-series Slave Terminal, 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.
1-3-1 Types of Non-fatal Errors
Overview of Controller Events (Errors and Information)
NJ-series CPU Unit
Event logs
Event source
Sysmac Studio
NS-series PT
CJ-series
Units
Backup battery
Create User-defined
Error instruction:
SetAlarm
Create User-defined
Information
instruction: SetInfo
User program
Or
PLC Function
Module
Motion Control
Function Module
EtherCAT Master
Function Module
EtherNet/IP
Function Module
Errors in
Special Units
Check current Controller
events and the event log
of past events.
Check current Controller
events and the event log
of past events.
EtherCAT
slave
EtherCAT
Slave
Terminal

Omron NJ Series Specifications

General

Brand	Omron
Model	NJ Series
Category	Controller
Language	English