Omron NJ, NJ501-14, NJ501-15, NJ501-13, NJ301-11 Troubleshooting Manual

Machine Automation Controller

NJ-series

Troubleshooting Manual

NJ501-15@@
NJ501-14@@
NJ501-13@@
NJ301-12@@
NJ301-11@@

W503-E1-08

© OMRON, 2011

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, or
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission of
OMRON.

No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is
constantly striving to improve its high-quality products, the information contained in this manual is subject to change without
notice. Every precaution has been taken in the preparation of this manual. Nevertheless, OMRON assumes no responsibility
for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained in
this publication.

Trademarks

• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan and other
countries for OMRON factory automation products.

• Windows, Windows 98, Windows XP, Windows Vista, and Windows 7 are registered trademarks of Microsoft
Corporation in the USA and other countries.

• EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.

• ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP are trademarks of ODVA.

• The SD and SDHC logos are trademarks of SD-3C, LLC.
Other company names and product names in this document are the trademarks or registered trademarks of their

respective companies.

Introduction

Thank you for purchasing an NJ-series CPU Unit.
This manual contains information that is necessary to use the NJ-series CPU Unit. Please read this
manual and make sure you understand the functionality and perfor mance of the NJ-series CPU Unit
before you attempt to use it in a control system.
Keep this manual in a safe place where it will be available for reference during operation.

Intended Audience

This manual is intended for the following personnel, who must also have knowledge of electrical sys­tems (an electrical engineer or the equivalent).

• Personnel in charge of introducing FA systems.

• Personnel in charge of designing FA systems.

• Personnel in charge of installing and maintaining FA systems.

• Personnel in charge of managing FA systems and facilities.

For programming, this manual is intended for personnel who understand the programming language
specifications in international standard IEC 61131-3 or Japanese standard JIS B3503.

Introduction

Applicable Products

This manual covers the following products.

• NJ-series CPU Units

• NJ501-15@@

• NJ501-14@@

• NJ501-13@@

• NJ301-12@@

• NJ301-11@@

Part of the specifications of the CPU Units are given in other manuals. Refer to Relevant Manuals on
page 2 and Related Manuals on page 21.

NJ-series Troubleshooting Manual (W503)

1

Relevant Manuals

Relevant Manuals

There are three manuals that pr o vide b asic information on the NJ-series CPU Units: the NJ-series CPU
Unit Hardware User’s Manual, the NJ-series CPU Unit Software User’s Manual, and the NJ-series
Instructions Reference Manual.
Most operations are perf ormed from the Sysmac Studio A ut omation Softw are . Ref er t o the Sysmac Stu­dio Ver sio n 1 Op eratio n Ma nual (Cat. No. W504) for information on the Sysmac Studio.

Other manuals are necessary for specific system configurations and applications.
Read all of the manuals that are relevant to your system configuration and application to make the most
of the NJ-series CPU Unit.

Basic informa-

tion

NJ-series CPU Unit

Hardware User’s Manual

NJ-series CPU Unit

Software User’s Manual

Reference Manual

Manual

NJ Series NX Series

NJ-series Instructions

NJ-series CPU Unit Motion

Control User’s Manual

NJ-series CPU Unit Built-in

EtherCAT Port User’s Manual

NJ-series Motion Control

Instructions Reference Manual

NJ-series CPU Unit Built-in

EtherNet/IP Port User’s Manual

NJ-series Database Connection

CPU Unit User’s Manual

NJ-series Troubleshooting

Manual

NX-series EtherCAT Coupler Unit

User’s Manual

User’s Manuals

NX-series NX Units

NX-series Safety Control Unit

User’s Manual

NX-series Safety Control Unit

Instructions Reference Manual

Reference Manual

NX-series Data

CJ-series Special Unit Operation

Manuals for NJ-series CPU Unit

Purpose of use

Introduction to NJ-series Controllers ●
Setting devices and hardware

Using motion control ●●
Using EtherCAT ●
Using EtherNet/IP ●
Using the database connection

service
Using the NX Series ●● ●
Performing safety controls ●●
Using CJ-series Units ●

Software settings

Using motion control ●●
Using EtherCAT ●
Using EtherNet/IP ●
Using the database connection

service
Using the NX Series ●● ●
Performing safety controls ●●●

Writing the user program

Using motion control ●● ●
Using EtherCAT ●
Using the database connection

service
Using the NX Series ●●
Performing safety controls ●●
Using CJ-series Units ●
Programming error processing ●

●

●

●●

●

●

●

2

NJ-series Troubleshooting Manual (W503)

Relev ant Manuals

Manual

NJ Series NX Series

Basic informa-

tion

NJ-series CPU Unit

Hardware User’s Manual

Purpose of use

Testing operation and debugging

Using motion control ●●
Using EtherCAT ●
Using EtherNet/IP ●
Using the database connection

service
Using the NX Series ●●

Performing safety controls ●
Learning about error management
and corrections
Maintenance

Using motion control ●●

Using EtherCAT ●

Using EtherNet/IP ●

Using the NX Series ●●

Performing safety controls ●

Using CJ-series Units ●

*1

▲▲ ▲▲ ▲▲● ▲▲ ▲

●

*1 The NJ-series Troubleshooting Manual introduces the error management concepts and error items. Refer to the manuals

that are indicated with triangles for details on errors for the corresponding Units.

NJ-series CPU Unit

Software User’s Manual

●

Reference Manual

NJ-series Instructions

NJ-series CPU Unit Motion

Control User’s Manual

EtherCAT Port User’s Manual

NJ-series CPU Unit Built-in

NJ-series Motion Control

Instructions Reference Manual

NJ-series CPU Unit Built-in

EtherNet/IP Port User’s Manual

NJ-series Database Connection

CPU Unit User’s Manual

●

NJ-series Troubleshooting

Manual

NX-series EtherCAT Coupler Unit

User’s Manual

User’s Manuals

NX-series NX Units

User’s Manual

NX-series Safety Control Unit

NX-series Safety Control Unit

Instructions Reference Manual

NX-series Data

Reference Manual

CJ-series Special Unit Operation

Manuals for NJ-series CPU Unit

NJ-series Troubleshooting Manual (W503)

3

Manual Structure

4-9

4 Installation and Wiring

NJ-series CPU Unit Hardware User’s Manual (W500)

stinU gnitnuoM 3-4

4

stnenopmoC rellortnoC gnitcennoC 1-3-4

4-3 Mounting Units

The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connected in the
same way to the Unit on the far right side of the Controller.

1 Join the Units so that the connectors fit exactly.

2 The yellow sliders at the top and bottom of each Unit lock the Units together. Move the sliders

toward the back of the Units as shown below until they click into place.

Precautions for Correct UsePrecautions for Correct Use

4-3-1 Connecting Controller Components

Connector

Hook

Hook holes

Slider

Lock

Release

Move the sliders toward the back
until they lock into place.

Level 1 heading
Level 2 heading
Level 3 heading

Level 2 heading

A step in a procedure

Manual name

Special information

Level 3 heading

Page tab

Gives the current
headings.

Indicates a procedure.

Icons indicate
precautions, additional
information, or reference
information.

Gives the number
of the main section.

This illustration is provided only as a sample. It may not literally appear in this manual.

The sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O
Units, and CPU Bus Units must be completely locked (until they click into place) after connecting
the adjacent Unit connectors.

Manual Structure

Page Structure

The following page structure is used in this manual.

Special Information

Special information in this manual is classified as follows:

Precautions for Safe Use

Precautions on what to do and what not to do to ensure safe usage of the product.

Precautions for Correct Use

Precautions on what to do and what not to do to ensure proper operation and performance.

Additional Information

Additional information to read as required.
This information is provided to increase understanding or make operation easier.

4

Note References are provided to more detailed or related information.

NJ-series Troubleshooting Manual (W503)

Precaution on Terminology

In this manual, “download” refers to transferring data from the Sysmac Studio to the physical Controller
and “upload” refers to transferring data from the physical Controller to the Sysmac Studio.

For the Sysmac Studio, synchronization is used to both upload and download data. Here, “synchronize”
means to automatically compare the data for the Sysmac Studio on the computer with the data in the
physical Controller and tra nsfer the data in the direction that is specified by the user.

Manual Structure

NJ-series Troubleshooting Manual (W503)

5

Manual Structure

6

NJ-series Troubleshooting Manual (W503)

Sections in this Manual

1

2

3

1

2

3

I

Overview of Errors

Error Troubleshooting Methods

Error Tables

I

Index

Sections in this Manual

NJ-series Troubleshooting Manual (W503)

7

Sections in this Manual

8

NJ-series Troubleshooting Manual (W503)

CONTENTS

CONTENTS

Introduction............................................................................................................... 1

Relevant Manuals...................................................................................................... 2

Manual Structure ...................................................................................................... 4

Sections in this Manual............................................................................................ 7

Terms and Conditions Agreement........................................................................ 11

Safety Precautions ................................................................................................. 13

Precautions for Safe Use....................................................................................... 14

Precautions for Correct Use.................................................................................. 15

Regulations and Standards................................................................................... 16

Unit Versions........................................................................................................... 18

Related Manuals ..................................................................................................... 21

Revision History ..................................................................................................... 24

Section 1 Overview of Errors

1-1 Overview of NJ-series Errors .................................................................................................1-2

1-1-1 Types of Errors............................................................................................................................ 1-2

1-1-2 CPU Unit Status.......................................................................................................................... 1-3

1-2 Fatal Errors............................................................................................................................... 1-4

1-2-1 Types of Fatal Errors................................................................................................................... 1-4

1-2-2 Checking for Fatal Errors............................................................................................................ 1-4

1-3 Non-fatal Errors .............................................................. .... ... ... ... ............................................ 1-5

1-3-1 Types of Non-fatal Errors............................................................................................................1-5

1-3-2 Checking for Non-fatal Errors ...................................................................................................1-12

1-3-3 Resetting Non-fatal Errors........................................................................................................ 1-14

Section 2 Error Troubleshooting Methods

2-1 Troubleshooting Flowcharts................ .... ... ... ....................................... ..................................2-2

2-1-1 Checking to See If the CPU Unit Is Operating............................................................................ 2-2

2-1-2 Troubleshooting Flowchart for Non-fatal Errors.......................................................................... 2-3

2-2 Troubleshooting Fatal Errors......... ... ... .... ...................................... .... ..................................... 2-4

2-3 Troubleshooting Non-fatal Errors ........................................ ... ....................................... ........ 2-5

2-3-1 Identifying and Resetting Errors with the Sysmac Studio...........................................................2-5

2-3-2 Identifying and Resetting Errors with an NS-series PT .............................................................. 2-9

2-3-3 Identifying and Resetting Errors from the User Program..........................................................2-11

2-3-4 Checking for Errors with System-defined Variables.................................................................. 2-13

2-4 Troubleshooting When You Cannot Go Online from the Sysmac Studio......................... 2-14

2-4-1 Causes and Correction When You Cannot Go Online from the Sysmac Studio.......................2-14

2-4-2 Troubleshooting for Each Cause............................................................................................... 2-15

NJ-series Troubleshooting Manual (W503)

9

CONTENTS

Section 3 Error Tables

3-1 Errors by Source...................................................................................................................... 3-2

3-1-1 Interpreting Error Descriptions....................................................................................................3-2

3-1-2 Errors in the PLC Function Module.............................................................................................3-2

3-1-3 Errors in the Motion Control Function Module...........................................................................3-46

3-1-4 Errors in the EtherNet/IP Function Module ...............................................................................3-74

3-1-5 Errors in the EtherCAT Master Function Module.......................................................................3-78

3-1-6 Errors in the DB Connection Service Function .........................................................................3-82

3-1-7 Errors in Slave Terminals..........................................................................................................3-87

3-1-8 Errors in EtherCAT Slaves.......................................................................................................3-108

3-1-9 Errors in CJ-series Units.........................................................................................................3-129

3-2 Events in Order of Event Codes.........................................................................................3-149

3-2-1 Interpreting Error Descriptions................................................................................................3-149

3-2-2 Error Table...............................................................................................................................3-150

3-3 Instruction Error Table ........................................................................................................ 3-182

Index

10

NJ-series Troubleshooting Manual (W503)

Terms and Conditions Agreement

Terms and Conditions Agreement

Read and understand this Manual

Please read and understand this cat alog before pur chasin g the produ ct s. Please con sult your OMRON
representative if you have any questions or comments.

Warranty, Limitations of Liability

Warranties

 Exclusive Warranty

Omron’s exclusive warranty is that the Products will be free from defects in materials and workman­ship for a period of twelve months from the date of sale by Omron (or such other period expressed in
writing by Omron). Omron disclaims all other warranties, express or implied.

 Limitations

OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF
THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.

Omron further disclaims all warranties and responsibility of any type for claims or expenses based
on infringement by the Products or otherwise of any intellectual prop erty right.

 Buyer Remedy

Omron’s sole obligation hereunder sh all b e, at Omron ’s election, to (i) replace (in the form originally
shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-com­plying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal
to the purchase price of the non-complying Product; provided that in no event shall Omron be
responsible for warranty, repair, indemnity or any other claims or expenses regarding the Products
unless Omron’s analysis confirms that the Products were properly handled, stored, installed and
maintained and not subject to contam ination, abuse, misuse or inappropriate modification. Retur n of
any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies
shall not be liable for the suitability or unsuitability or the results from the use of Products in combi­nation with any electrical or electronic components, circuits, system assemblies or any other materi­als or substances or environments. Any advice, recommendations or information given orally or in
writing, are not to be construed as an amendment or addition to the above warranty.

See http://www.omron.com/global/ or contact your Omron representative for published information.

Limitation on Liability; Etc

OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CON­SEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY
WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT,
WARRANTY, NEGLIGENCE OR STRICT LIABILITY.

Further, in no event shall liability of Omron Companies exceed the individual price of the Product on
which liability is asserted.

NJ-series Troubleshooting Manual (W503)

11

Terms and Conditions Agreement

Application Considerations

Suitability of Use

Omron Companies shall not be responsible for conformity with any standards, codes or regulations
which apply to the combination of the Product in the Buyer’s application or use of the Product. At
Buyer’s request, Omron will provide applicable third party certification documents identifying ratings
and limitations of use which apply to the Product. This information by itself is not sufficient for a com­plete determination of the suitability of the Product in combination with the end product, machine, sys­tem, or other application or use. Buyer shall be solely responsible for determining appropriateness of
the particular Product with respect to Buyer’s application, product or system. Buyer shall take applica­tion responsibility in all cases.

NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND
INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.

Programmable Products

Omron Companies shall not be responsible for the user’s programming of a programmable Product, or
any consequence thereof.

Disclaimers

Performance Data

Data presented in Omron Company websites, catalogs and other materials is provided as a guide for
the user in determining suitability and does not constitute a warranty. It may represent the result of
Omron’s test conditions, and the user must correlate it to actual application req uirement s. Actual perfor ­mance is subject to the Omron’s Warranty and Limitations of Liability.

Change in Specifications

Product specifications and accessories may be changed at a ny time based on improvem ents and other
reasons. It is our practice to change part numbers when published ratings or features are changed, or
when significant construction changes are made. However, some specifications of the Product may be
changed without any notice. When in doubt, special part numbers may be assigned to fix or establish
key specifications for your application. Please consult with your Omron’s representative at any time to
confirm actual specifications of purchased Product.

12

Errors and Omissions

Information presented by Omron Companies has been checked and is believed to be accurate; how­ever, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.

NJ-series Troubleshooting Manual (W503)

Safety Precautions

Refer to the following manuals for safety precaution s.

• NJ-series CPU Unit Hardware User’s Manu al (Cat No. W500)

• NJ-series CPU Unit Software User’s Manual (Cat No. W501)

Safety Precautions

NJ-series Troubleshooting Manual (W503)

13

Precautions for Safe Use

Precautions for Saf e Use

Refer to the following manuals for precautions for the safe use of the NJ-series Controller.
Installation precautions are also provided for the NJ-series CPU Unit and the NJ-series Controller sys­tem.

• NJ-series CPU Unit Hardware User’s Manual (W500)

• NJ-series CPU Unit Software User’s Manual (W501)

14

NJ-series Troubleshooting Manual (W503)

Precautions for Correct Use

Refer to the following manuals for pr ec au tio ns for the correct use of the NJ- se ries Controller.
Installation precautions are als o provided for the NJ-series CPU Unit and the NJ-series Controller sy s­tem.

• NJ-series CPU Unit Hardware User’s Manu al (W500)

• NJ-series CPU Unit Software User’s Manual (W501)

Precautions for Correct Use

NJ-series Troubleshooting Manual (W503)

15

Regulations and Standards

Regulations and Standards

Conformance to EC Directives

Applicable Directives

• EMC Directives

• Low Voltage Directive

Concepts

 EMC Directive

OMRON devices that comply with EC Directives also conform to the related EMC standards so that
they can be more easily built into other devices or the overall machine. The actual products have
been checked for conformity to EMC standards.*
Whether the products conform to the standards in the system used by the customer, however, must
be checked by the customer. EMC-related performance of the OMRON devices that com ply with EC
Directives will vary depending on the configuration, wiring, and other conditions of the equipment or
control panel on which the OMRON de vices are installed. The customer must, ther ef ore , perf orm the
final check to confirm that devices and the overall machine conform to EMC standards.

* Applicable EMC (Electromagnetic Compatibility) standards are as follows:

EMS (Electromagnetic Susceptibility): EN 61131-2 and EN 61000-6-2
EMI (Electromagnetic Interference): EN 61131-2 and EN 61000-6-4 (Radiated emission: 10-m regulations)

 Low Voltage Directive

Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75 to 1,500 VDC meet the
required safety standards. The applicable directive is EN 61131-2.

 Conformance to EC Directives

The NJ-series Controllers comply with EC Directives. To ensure that the machine or device in which
the NJ-series Controller is used complies with EC Directives, the Controller must be installed as fol­lows:

• The NJ-series Controller must be installed within a cont rol panel.

• You must use reinforced insulation or double insulation for the DC power supplies connected to
DC Power Supply Units and I/O Units.

• NJ-series Controllers that comply with EC Directiv es al so conform to the Common Emission Stan­dard (EN 61000-6-4). Radiated emission characteristics (10-m regulations) may var y depending
on the configuration of the control panel used, other devices connected to the control panel, wir­ing, and other conditions.
You must therefore confirm that the overall machine or equipment complies with EC Directives.

16

NJ-series Troubleshooting Manual (W503)

Conformance to KC Standards

Observe the following precaution if you use NX-series Units in Korea.

Class A Device (Broadcasting Communications Device for Office Use)
This device obtained EMC registration for office use (Class A), and it is intended to be used in places

other than homes.
Sellers and/or users need to take note of this.

Conformance to Shipbuilding Standards

Regulations and Standards

The NJ-series Controllers comply with the following shipbuilding standards. Applicability to the ship­building standards is based on certain usage conditions . I t may not be possible to use the product in
some locations. Contact your OMRON representative before attempting to use a Contro ller on a
ship.

Usage Conditions for NK and LR Shipbuilding Standards

• The NJ-series Controller must be installed within a control panel.

• Gaps in the door to the control panel must be completely filled or covered with gaskets or other
material.

• The following noise filter must be connected to the power supply line.

Noise Filter

Manufacturer Model

Cosel Co., Ltd. TAH-06-683

Software Licenses and Copyrights

This product incorporates certain third party software. The license and copyright information associ­ated with this software is available at http://www.fa.omron.co.jp/nj_info_e/.

NJ-series Troubleshooting Manual (W503)

17

Unit Versions

Unit Versions

Unit Versions

A “unit version” has been introduced to manage CPU Units in the NJ Series according to differences in
functionality accompanying Unit upgrades.

Notation of Unit Versions on Products

The unit version is given on the ID information label of the products for which unit versions are man­aged, as shown below.

Example for NJ-series NJ501-@@@@ CPU Unit:

ID information label

Unit model

NJ501 -1500 Ver.1.@@
PORT1 MAC ADDRESS: @@@@@@@@@@@@

PORT2 MAC ADDRESS: @@@@@@@@@@@@
Lot No. DDMYY@ xxxx

Unit version

Lot number and serial number MAC address

The following information is provided on the ID information label.

Item Description

Unit model Gives the model of the Unit.
Unit version Gives the unit version of the Unit.
Lot number and

serial number

MAC address Gives the MAC address of the built-in port on the Unit.

Gives the lot number and serial number of the Unit.
DDMYY: Lot number, @: For use by OMRON, xxxx: Serial number
“M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)

18

Confirming Unit Versions with Sysmac Studio

You can use the Unit Production Information on the Sysmac Studio to check the unit version of the CPU
Unit, CJ-series Special I/O Units, CJ-series CPU Bus Units, and EtherCAT slaves. The unit ve rsions of
CJ-series Basic I/O Units cannot be checked from the Sysmac Studio.

 CPU Unit and CJ-series Units

1 Double-click CPU/Expansion Racks under Configurations and Setup in the Multiview

Explorer. Or, right-click CPU/Expansion Racks under Configurations and Setup and select
Edit from the menu.

The Unit Editor is displayed for the Controller Configurations and Setup layer.

NJ-series Troubleshooting Manual (W503)

Unit Versions

2 Right-click any open space in the Unit Editor and select Production Information.

The Production Information Dialog Box is displayed.

Simple Display Detailed Display

In this example, “Ver.1.00” is displayed next to the unit model.
The following items are displayed.

CPU Unit CJ-series Units

Unit model
Unit version
Lot number

Unit model
Unit version
Lot number
Rack number, slot number, and unit number

 EtherCAT Slaves

1 Double-click EtherCAT under Configurations and Setup in the Multiview Explorer. Or, right-

click EtherCAT under Configurations and Setup and select Edit from the menu.
The EtherCAT Configuration Tab Page is displayed for the Controller Configurations and Setup

layer.

2 Right-click the master in the EtherCAT Configurations Editing Pane and select Display Produc-

tion Information.

The Production Information Dialog Box is displayed.

The following items are displayed.
Node address
Type information*
Serial number

* If the model number cannot be determined (such as when there is no ESI file), the vendor ID, product

code, and revision number are displayed.

NJ-series Troubleshooting Manual (W503)

19

Unit Versions

Additional Information

Refer to the manual for the specific Unit for the unit versions of the CPU Units, Communications
Coupler Units, NX Units, and Safety Control Units to which the database connection service and
other functions were added.

Unit Versions and Sysmac Studio Versions

The events that can occur depend on the unit versions of the NJ-series CPU Unit and the EtherCAT
slaves . You must use the corresponding v ersion of Sysm ac Studio to display events that were added for
version upgrades when troubleshooting from the Sysmac Studio or from the Troubleshooter on an NS­series PT. Refer to the product manuals for information on the unit versions of the CPU Unit and Ether­CAT slaves, and for the relationship with the version of the Sysmac Studio.

Unit Version Notation

In this manual, unit versions are specified as shown in the following table.

Product nameplate Notation in this manual Remarks

“Ver.1.0” or later to the right of
the lot number

Unit version 1.0 or later Unless unit versions are specified, the information in this manual

applies to all unit versions.

20

NJ-series Troubleshooting Manual (W503)

Related Manuals

The following manuals are related to the NJ-series Controllers. Use these manuals for reference.

Manual name Cat. No. Model numbers Application Description

NJ-series CPU Unit
Hardware User’s Manual

NJ-series CPU Unit Soft­ware User’s Manual

NJ-series CPU Unit
Motion Control User’s
Manual

NJ-series Instructions
Reference Manual

NJ-series Motion Control
Instructions Reference
Manual

NJ-series CPU Unit Built­in EtherCA T® P ort User’s
Manual

NJ-series CPU Unit Built­in EtherNet/IP

User’s Manual

TM

Port

W500 NJ501-@@@@

NJ301-@@@@

W501 NJ501-@@@@

NJ301-@@@@

W507 NJ501-@@@@

NJ301-@@@@

W502 NJ501-@@@@

NJ301-@@@@

W508 NJ501-@@@@

NJ301-@@@@

W505 NJ501-@@@@

NJ301-@@@@

W506 NJ501-@@@@

NJ301-@@@@

Learning the basic
specifications of the NJ­series CPU Units,
including introductory
information, designing,
installation, and mainte­nance. Mainly hardware
information is provided.

Learning how to pro­gram and set up an NJ­series CPU Unit. Mainly
software information is
provided.

Learning about motion
control settings and pro­gramming concepts.

Learning detailed speci­fications on the basic
instructions of an NJ­series CPU Unit.

Learning about the
specifications of the
motion control instruc­tions that are provided
by OMRON.

Using the built-in Ether­CAT port on an NJ­series CPU Unit.

Using the built-in Ether­Net/IP port on an NJ­series CPU Unit.

An introduction to the entire NJ-series system is
provided along with the following information on the
CPU Unit.

• Features and system configuration

• Introduction

• Part names and functions

• General specifications

• Installation and wiring

• Maintenance and inspection
Use this manual together with the NJ-series CPU

Unit Software User’s Manual (Cat. No. W501).
The following information is provided on a Control-

ler built with an NJ501 CPU Unit.

• CPU Unit operation

• CPU Unit features

• Initial settings

• Programming based on IEC 61131-3 language
specifications

Use this manual together with the NJ-series CPU
Unit Hardware User’s Manual (Cat. No. W500).

The settings and operation of the CPU Unit and
programming concepts for motion control are
described. Use this manual together with the NJ-
series CPU Unit Hardware User’s Manual (Cat. No .
W500) and NJ-series CPU Unit Software User’s
Manual (Cat. No. W501).

The instructions in the instruction set (IEC 61131-3
specifications) are described. When programming,
use this manual together with the NJ-series CPU

Unit Hardware User’s Manual (Cat. No. W500) and
NJ-series CPU Unit Software User’s Manual (Cat.

No. W501).
The motion control instructions are described.

When programming, use this manual together with
the NJ-series CPU Unit Hardware User’s Manual
(Cat. No. W500), NJ-series CPU Unit Software

User’s Manual (Cat. No
Unit Motion Control User’s Manual (Cat. No.

W507).
Information on the built-in EtherCAT port is pro-

vided. This manual provides an introduction and
provides information on the configuration, features,
and setup.
Use this manual together with the NJ-series CPU

Unit Hardware User’s Manual (Cat. No. W500) and
NJ-series CPU Unit Software User’s Manual (Cat.

No. W501).
Information on the built-in EtherNet/IP port is pro-

vided. Information is provided on the basic setup,
tag data links, and other features.
Use this manual together with the NJ-series CPU

Unit Hardware User’s Manual (Cat. No. W500) and
NJ-series CPU Unit Software User’s Manual (Cat.

No. W501).

Related Manuals

. W501) and NJ-ser

ies CPU

NJ-series Troubleshooting Manual (W503)

21

Related Manuals

Manual name Cat. No. Model numbers Application Description

NJ-series Troubleshoot­ing Manual

NJ-series Database Con­nection CPU Units User’s
Manual

NX-series Communica­tions Coupler Unit User’s
Manual

NX-series NX Units
User’s Manuals

NX-series Safety Control
Unit User’s Manual

NX-series Safety Control
Unit Instructions Refer­ence Manual

CJ-series Special Unit
Manuals for NJ-series
CPU Unit

Sysmac Studio V ersion 1
Operation Manual

CX-Integrator
CS/CJ/CP/NSJ/NJ-series
Network Configuration
Tool Operation Manual

CX-Designer User’s
Manual

W503 NJ501-@@@@

NJ301-@@@@

W527 NJ501-1@20 Using the database con-

W519 NX-ECC@@@ Leaning how to use an

W521
W522
W523
W524
W525

Z930 NX-SL@@@@

Z931 NX-SL@@@@ Learning about the

W490
W498
W491
Z317
W492
W494
W497
W495
W493

W504 SYSMAC-

W464 Learning how to config-

V099 Learning to create

NX-ID@@@@
NX-OC@@@@
NX-OD@@@@
NX-AD@@@@
NX-DA@@@@
NX-TS@@@@
NX-PD1@@@
NX-PF0@@@
NX-TBX@@
NX-EC0@@@
NX-ECS@@@
NX-PG0@@@
NX-

@@@@@@

NX-SI@@@@
NX-SO

@@@@

CJ1W-@@@@ Learning how to use CJ-

SE2@@@

Learning about the
errors that may be
detected in an NJ-series
Controller.

nection service with NJ­series Controllers

NX-series Communica­tions Coupler Unit and
Slave Terminals

Learning how to use NX
Units

Learning how to use
NX-series Safety Con­trol Units

specifications of instruc­tions for the Safety CPU
Unit.

series Units with an NJ­series CPU Unit.

Learning about the
operating procedures
and functions of the
Sysmac Studio.

ure networks (data links,
routing tables, Commu­nications Unit settings,
etc.).

screen data for NS­series Programmable
Terminals.

Concepts on managing errors that may be detected
in an NJ-series Controller and information on indi­vidual errors are described.
Use this manual together with the NJ-series CPU

Unit Hardware User’s Manual (Cat. No. W500) and
NJ-series CPU Unit Software User’s Manual (Cat.

No. W501).
Describes the database connection service.

Introduces the system, configuration methods, Unit
hardware, setting methods, and functions of Slave
Terminals that consist of a Communications Cou­pler Unit and NX Units. A manual is available f or the
following Unit.
EtherCAT Coupler Unit

Describe the hardware, setup methods, and func­tions of the NX Units.
Manuals are available for the following Units.
Digital I/O Units, Analog I/O Units, System Units,
and Position Interface Units

Describes the hardware, setup methods, and func­tions of the NX-series Safety Control Units.

Describes the instructions for the Safety CPU Unit.
When programming, use this manual together with
the NX-series Safety Control Unit User’s Manual
(Cat. No. Z930).

The methods and precautions for using CJ-series
Units with an NJ501 CPU Unit are described,
including access methods and programming inter­faces. Manuals are available for the following Units.
Analog I/O Units, Insulated-type Analog I/O Units,
Temperature Control Units, ID Sensor Units, High­speed Counter Units, Serial Communications Units,
DeviceNet Units, EtherNet/IP Units, and CompoNet
Master Units.

Use these manuals together with the NJ-series
CPU Unit Hardware User’s Manual (Cat. No . W500)
and NJ-series CPU Unit Software User’s Manual
(Cat. No. W501).

Describes the operating procedures of the Sysmac
Studio.

Describes operating procedures for the CX-Integra­tor.

Describes operating procedures for the CX­Designer.

22

NJ-series Troubleshooting Manual (W503)

Manual name Cat. No. Model numbers Application Description

CX-Protocol Operation
Manual

GX-series EtherCAT
Slave Unit User’s Manual

MX2/RX Series Inverter
EtherCAT Communica­tion Unit User’s Manual

G5-series AC Servomo­tors/Servo Drives with
Built-in EtherCAT Com­munications User’s Man­ual

G5-series Linear
Motors/Drives with Built­in EtherCAT Communica­tions Linear Motor Type
User’s Manual

FH/FZ5 Vision System
FH/FZ5 Series User’s
Manual for Communica­tions Settings

FQ-M-series Specialized
Vision Sensor for Posi­tioning User’s Manual

EtherCAT Digital-type
Sensor Communication
Unit Operation Manual

E3NW-ECT EtherCAT
Digital Sensor Communi­cations Unit Operation
Manual

ZW-CE1@T Confocal
Fiber Type Displacement
Sensor User’s Manual

W344 Creating data transfer

protocols for general­purpose devices con­nected to CJ-series
Serial Communications
Units.

W488 GX-ID@@@@

GX-OD@@@@
GX-OC@@@@
GX-MD@@@@
GX-AD@@@@
GX-DA@@@@
GX-EC@@@@
XWT-ID@@
XWT-OD@@

I574 3G3AX-MX2-ECT

3G3AX-RX-ECT

I576 R88D-KN@-ECT

R88M-K@

I577 R88D-KN@-ECT-L

R88L-EC-@W-@
R88L-EC-@M-@

Z342 FH-3@@@@

FH-1@@@@

Z314 FQ-MS12@ Leaning how to connect

E413 E3X-ECT Leaning how to connect

E429 E3NW-ECT Leaning how to connect

Z332 ZW-CE1@T Leaning how to connect

Leaning how to connect
GX-series EtherCAT
Slave Units.

Leaning how to connect
a 3G3AX-MX2-ECT or
3G3AX-RX-ECT Ether­CAT Communications
Unit for MX2/RX-series
Inverters.

Leaning how to connect
G5-series AC Servomo­tors/Servo Drives with
Built-in EtherCAT Com­munications.

Leaning how to connect
G5-series Linear
Motors/Drives with Built­in EtherCAT Communi­cations Linear Motor
Type.

Leaning how to connect
FH/FZ5-series Vision
Systems

FQ-M-series Special­ized Vision Sensor for
Positioning.

E3X-series EtherCAT
Slave Units.

E3NW EtherCAT Slave
Units.

ZW-CE1@T EtherCAT
Slave Units.

Describes operating procedures for the CX-Proto­col.

Provides the specifications of and describes appli­cation methods for GX-series EtherCAT Slave
Units.

Describes the following information for the 3G3AX­MX2-ECT and 3G3AX-RX-ECT EtherCAT Commu­nications Unit for MX2/RX-series Inverters: installa­tion, parameter settings required for operation,
troubleshooting, and inspection methods.

Describes the following information for the G5­series AC Servomotors/Servo Drives with Ether­CAT Communications: installation, wiring methods,
parameter settings required for operation, trouble­shooting, and inspection methods.

Describes the following information for the G5­series Linear Motors/Drives with EtherCAT Com­munications Linear Motor Type: installation, wiring
methods, parameter settings required for operation,
troubleshooting, and inspection methods.

The functions, settings, and communications meth­ods to communicate with FH/FZ5-series Vision
Systems fro
described.

Describes the following information for the FQ-M­series Specialized Vision Sensor for Positioning:
installation, wiring methods, parameter settings
required for operation, troubleshooting, and inspec­tion methods.

Provides the specifications of and describes appli­cation methods for E3X-series EtherCAT Slave
Units.

Provides the specifications of and describes appli­cation methods for E3NW EtherCAT Slave Units
are provided.

Provides the specifications of and describes appli­cation methods for ZW-CE1@T EtherCAT Slave
Units are provided.

m a PLC or other ex

Related Manuals

ternal device are

NJ-series Troubleshooting Manual (W503)

23

Revision History

W503-E1-08

Revision code

Cat. No.

Revision History

A manual revision code appears as a suffix to the catalog number on the front and back covers of the
manual.

Revision code Date Revised content

01 July 2011 Original production
02 March 2012 Added information related to the upgrade to unit version 1.01,

03 May 20 12 Added information related to the upgrade to unit version 1.02,

04 August 2012 Made additions to events and changes to the contents related

05 February 2013 Made additions to events and changes to the contents related

06 April 2013 Made additions to ev ents and changes to the contents related

07 J une 2013 Made additions to events and changes to the contents related

08 September 2013 Made additions to events and changes to the contents related

made additions and changes to events related to the addition
of devices that can be connected, and corrected mistakes.

made additions and changes to events related to the addition
of devices that can be connected, and corrected mistakes.

to the upgrade to unit version 1.03, and corrected mistakes.

to the upgrade to unit version 1.04, and corrected mistakes.

to the upgrade to unit version 1.05, and corrected mistakes.

to the upgrade to unit version 1.06, and corrected mistakes.

to the upgrade to unit version 1.07, and corrected mistakes.

24

NJ-series Troubleshooting Manual (W503)

Overview of Errors

This section provides information that is required to troubleshoot errors. It introduces
the types of errors that can occur on an NJ-series Controller, the operation that occurs
in response to errors, and the methods you can use to check for errors. Refer to Sec-
tion 2 Error Troubleshooting Methods for information on troubleshooting errors.

1-1 Overview of NJ-series Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-1 Types of Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-2 CPU Unit Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

1-2 Fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2-1 Types of Fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2-2 Checking for Fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-3 Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-3-1 Types of Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-3-2 Checking for Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

1-3-3 Resetting Non-fatal Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

1

NJ-series Troubleshooting Manual (W503)

1-1

1 Overview of Errors

NS-series PT

Host computer

Built-in EtherCAT port

Built-in EtherNet/IP
port

Troubleshooting functions

Troubleshooter

EtherNet/IP

EtherCAT

Sysmac Studio

CJ-series Units

NJ-series
CPU Unit

Error management range for
NJ-series Controller

EtherCAT
slaves

1-1 Overview of NJ-series Errors

You manage all of the errors that occur on the NJ-series Controller as events. The same methods are
used for all events. This allows you to see what errors have occurred and find corrections for them with
the same methods for t he entire ran ge of er rors that is ma naged (i.e ., CPU Unit, NX-series Sla ve T ermi­nals, EtherCAT slaves,* and CJ-series Units).

* Only Sysmac devices are supported. For information on EtherCAT slaves that are Sysmac devices, refer to the

NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505).

1-1-1 Types of Errors

1-2

You can use the troubleshooting functions of the Sysmac Studio or the Troubleshooter on an NS-series
PT to quickly check for errors that have occurred and find corrections for them.

To perform troubleshooting from an NS-series PT, connect the PT to the built-in EtherNet/IP port on the
CPU Unit.

There are two main types of errors (events) depending on whether the NJ-series Con troller can man­age them or not.

 Fatal Errors

These errors are not detected by the event management function of the NJ-series Controller
because the CPU Unit stops operation. You cannot identify or reset these errors with the Sysmac
Studio or an NS-series PT.

Refer to 1-2 Fatal Errors for error types and confirmation methods for fatal errors.

NJ-series Troubleshooting Manual (W503)

 Non-fatal Errors

PWR indicator

RUN indicator
ERROR indicator

Power Supply Unit CPU Unit

These errors are detected and managed with the event management function of the NJ-series Con­troller. You can confirm these errors with the Sysmac Studio or an NS-series PT.

Refer to 1-3 Non-fatal Errors for error types and confirmation methods for non-fatal errors.

1-1-2 CPU Unit Status

1 Overview of Errors

1-1 Overview of NJ-series Errors

You can check the operating status of the CPU Unit with the PWR, RUN, and ERROR indicators on the
front panels of the Power Supply Unit and CPU Unit.

The following table shows the status of the front-panel indicators, the status of user program execution,
and the ability to make a software connection to the Sysmac Studio or an NS-series PT during startup,
during normal operation, and when there are errors in the Controller.

Power

Supply

CPU Unit operating status

During startup

During normal
operation

Fatal errors

Non-fatal errors

*1 Refer to 1-2 Fatal Errors for information on individual errors.
*2 Refer to 1-3 Non-fatal Errors for information on individual errors.
*3 The function module where the error occurred stops.

RUN mode Lit Lit Not lit Continues. Possible.
PROGRAM mode Lit Not lit Not lit Stops.

Power Supply Error
CPU Unit Reset

Incorrect Power Sup­ply Unit Connected

CPU Unit Watchdog
Timer Error

Major fault

Partial fault

Minor fault

Observation

*1

*2

*2

*2

*2

*1

*1

*1

Unit

PWR

(green)

Lit Flashing

Not lit Not lit Not lit Stops. Not possible.

Lit Not lit Not lit Stops.
Lit Flashing

Lit Not lit Lit Stops.

Lit Not lit Lit Stops. Possible. (Communi­Lit Lit Flashing

Lit Lit Flashing

Lit Lit Not lit Continues.

RUN

(green)

(1-s inter-

vals).

(3-s inter-

vals).

CPU Unit

ERROR

(1-s inter-

(1-s inter-

User pro-

gram execu-

tion status

(red)

Not lit Stop s. Not possible.

Lit Stops.

Continues.

vals).

Continues.

vals).

Software connec­tion to Sysmac Stu­dio or NS-series PT

cations can be con-

*3

nected from an NS-

series PT if Ether-

Net/IP is operating

normally.)

1

1-1-2 CPU Unit Status

NJ-series Troubleshooting Manual (W503)

1-3

1 Overview of Errors

1-2 Fatal Errors

1-2-1 Types of Fatal Errors

This section describes the errors that cause the operation of the NJ-series CPU Unit to stop.
Software connections to the Sysmac Studio or an NS-series PT cannot be made if there is a fatal error
in the Controller.

 Power Supply Error

Po wer is not supplied, the voltage is outside of the allowed range, or the Power Supply Unit is faulty.

 CPU Unit Reset

The CPU Unit stopped operation because of a hardware error. Other than hardware failures, this
error also occurs at the following times.

• The power supply to an Expansion Rac k is OFF.

• The I/O Connecting Cable is incorrectly installed.

• The IN and OUT connectors are reversed.

• The connectors are not mated properly.

• There is more than one I/O Control Unit on the CPU Rack or there is an I/O Control Unit on an

Expansion Rack.

 Incorrect Power Supply Unit Connected

There is a CJ-series Power Supply Unit connected to the CPU Rack. The operation of the Con trolle r
is stopped.

 CPU Unit W atchdog Timer Error

This error occurs in the CPU Unit. This error occurs when the watchdog timer times out because a
hardware failure or when temporary data corruption causes the CPU Unit to hang.

1-2-2 Checking for Fatal Errors

You can identify fat al err or s ba sed o n t he sta tus of t he PWR in dicator on t he Power Supply Unit and the
RUN and ERROR indicators on the CPU Unit, as we ll as by the ability to go online with the CPU Unit
from the Sysmac Studio. Refer to Section 2 Error Troubleshooting Methods for information on identify-
ing errors and corrections.

Indicators

PWR (green) RUN (green) ERROR (red)

Not lit Not lit Not lit Not possible.* Power Supply Error

Lit Not lit Not lit CPU Unit Reset
Lit Flashing (3-s

intervals).

Lit Not lit Lit CPU Unit Watchdog Timer

* Power Supply Errors and Incorrect Power Supply Unit Connected errors can be differentiated with the indicators.

There is no need to see if you can go online with the CPU Unit from the Sysmac Studio.

Going online from

the Sysmac Studio

Lit Incorrect Power Supply Unit

CPU Unit operating status

Connected

Error

1-4

NJ-series Troubleshooting Manual (W503)