Omron NX-ECC201 User Manual

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Machine Automation Controller

NX-series

EtherCAT® Coupler Unit

User’s Manual

NX-ECC201

EtherCAT Coupler Unit

W519-E1-01

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, Windows 7, and Excel 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 logo is a trademark 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 NX-series EtherCAT Coupler Unit.

This manual contains information that is necessary to use the NX-series EtherCAT Coupler Unit. Please read this manual and make sure you understand the functionality and performance of the NX-series EtherCAT Coupler 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 product.

• NX-series EtherCAT Coupler Unit

NX-ECC201

NX-series EtherCAT Coupler Unit User’s Manual (W519)

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

Relevant Manuals .....................................................................................................8

Manual Structure .................................................................................................... 10

Read and Understand this Manual........................................................................12

Safety Precautions .................................................................................................15

Precautions for Safe Use....................................................................................... 19

Precautions for Correct Use..................................................................................23

Regulations and Standards................................................................................... 24

Unit Versions ..........................................................................................................26

Related Manuals .....................................................................................................29

Terminology ............................................................................................................32

Revision History .....................................................................................................34

Sections in this Manual .........................................................................................35

Section 1 EtherCAT Networks

1-1 Introduction to EtherCAT...................................................................................................... 1-2

1-1-1 How EtherCAT Works ................................................................................................................. 1-2

1-1-2 Types of EtherCAT Communications .......................................................................................... 1-4

1-2 EtherCAT Network Configuration Elements........................................................................ 1-5

1-2-1 System Configuration Example of an EtherCAT Network ........................................................... 1-5

1-2-2 Introduction to Configuration Devices .........................................................................................1-6

Section 2 Features and System Configuration

2-1 Features of EtherCAT Slave Terminals ................................................................................ 2-2

2-2 System Configurations of EtherCAT Slave Terminals ....................................................... 2-4

2-2-1 System Configuration.................................................................................................................. 2-4

2-2-2 Types of NX Units .......................................................................................................................2-6

2-3 Support Software................................................................................................................... 2-7

2-3-1 Applicable Support Software.......................................................................................................2-7

2-3-2 Connection Method and Procedures...........................................................................................2-7

2-3-3 Scope of Access When Connected to the USB Port on the EtherCAT Coupler Unit.................. 2-9

Section 3 Specifications and Application Procedures

3-1 Specifications ........................................................................................................................ 3-2

3-1-1 General Specifications of EtherCAT Slave Terminals .................................................................3-2

3-1-2 EtherCAT Coupler Unit Specifications......................................................................................... 3-2

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3-1-3 End Cover Specifications............................................................................................................ 3-5

3-2 Procedures............................................................................................................................. 3-6

3-2-1 EtherCAT Slave Terminal Application Procedures ...................................................................... 3-6

3-2-2 Details .........................................................................................................................................3-8

Section 4 Part Names and Functions

4-1 Parts and Names.................................................................................................................... 4-2

4-1-1 EtherCAT Coupler Units..............................................................................................................4-2

4-1-2 NX Units...................................................................................................................................... 4-3

4-1-3 End Cover ................................................................................................................................... 4-4

4-2 Indicators ............................................................................................................................... 4-5

4-3 Hardware Switch Settings .................................................................................................... 4-9

4-3-1 Rotary Switches .......................................................................................................................... 4-9

4-3-2 DIP Switch...................................................................................................................................4-9

4-3-3 Setting the Node Address .........................................................................................................4-10

4-4 Communications Connector and Peripheral USB Port.................................................... 4-11

4-5 Terminal Block ..................................................................................................................... 4-12

4-6 DIN Track Contact Plate ......................................................................................................4-13

Section 5 Designing the Power Supply System

5-1 Power Supply System and Design Concepts ..................................................................... 5-2

5-1-1 Power Supply System and Types of Power Supplies ................................................................. 5-2

5-1-2 NX-series Power Supply-related Units........................................................................................ 5-3

5-1-3 Design Concepts for Power Supply to the EtherCAT Slave Terminal ......................................... 5-5

5-2 Designing the NX Unit Power Supply System .................................................................... 5-6

5-2-1 Procedure for Designing the NX Unit Power Supply System...................................................... 5-6

5-2-2 Calculation Example for the NX Unit Power Supply.................................................................... 5-7

5-3 Designing the I/O Power Supply System ............................................................................ 5-9

5-3-1 I/O Power Supply Method ...........................................................................................................5-9

5-3-2 Designing the I/O Power Supply from the NX Bus.................................................................... 5-10

5-3-3 Designing the I/O Power Supply from External Sources........................................................... 5-14

5-4 Selecting External Power Supplies and Protective Devices ........................................... 5-15

5-4-1 Selecting the Unit Power Supply...............................................................................................5-15

5-4-2 Selecting the I/O Power Supplies.............................................................................................. 5-17

5-4-3 Selecting Protective Devices.....................................................................................................5-17

Section 6 Installation

6-1 Installing Units ....................................................................................................................... 6-2

6-1-1 Installation Precautions............................................................................................................... 6-2

6-1-2 Preparations for Installation ........................................................................................................ 6-6

6-1-3 Installation Orientation ................................................................................................................6-8

6-1-4 Installing the EtherCAT Coupler Unit ..........................................................................................6-9

6-1-5 Installing and Connecting NX Units........................................................................................... 6-11

6-1-6 Mounting the End Cover ........................................................................................................... 6-15

6-1-7 Mounting the End Plates...........................................................................................................6-16

6-1-8 Attaching Markers ..................................................................................................................... 6-17

6-1-9 Removing Units......................................................................................................................... 6-18

6-1-10 Assembled Appearance and Dimensions ................................................................................. 6-20

6-2 Control Panel Installation ...................................................................................................6-23

6-2-1 Temperature ..............................................................................................................................6-23

6-2-2 Humidity .................................................................................................................................... 6-25

NX-series EtherCAT Coupler Unit User’s Manual (W519)

6-2-3 Vibration and Shock.................................................................................................................. 6-25

6-2-4 Atmosphere .............................................................................................................................. 6-25

6-2-5 Electrical Environment .............................................................................................................. 6-26

6-2-6 Grounding................................................................................................................................. 6-31

Section 7 Wiring

7-1 EtherCAT Network Wiring ..................................................................................................... 7-2

7-1-1 Installation Precautions............................................................................................................... 7-2

7-1-2 Preparations for Installation........................................................................................................ 7-3

7-1-3 Pin Arrangement of Communications Connectors on the EtherCAT Coupler Unit ..................... 7-4

7-1-4 Connecting Communications Cables and Connectors ............................................................... 7-5

7-1-5 Connecting Communications Cables.......................................................................................... 7-6

7-2 Connecting the Power Supply and Ground Wires ............................................................. 7-8

7-2-1 Wiring the EtherCAT Coupler Unit .............................................................................................. 7-8

7-2-2 Wiring the Power Supply to the EtherCAT Slave Terminal ......................................................... 7-9

7-2-3 Grounding the EtherCAT Slave Terminal.................................................................................... 7-9

7-2-4 Precautions for Wiring the EtherCAT Slave Terminal Together

with Computers and other Peripheral Devices7-13

7-2-5 Wiring to the Screwless Clamping Terminal Block.................................................................... 7-14

7-3 Connecting USB Cable ....................................................................................................... 7-26

7-4 Wiring External Signal Lines .............................................................................................. 7-28

Section 8 EtherCAT Communications

8-1 Structure of CAN Application Protocol over EtherCAT (CoE)........................................... 8-2

8-2 EtherCAT Slave Information Files (ESI Files) ..................................................................... 8-3

8-3 Transitions of Communications States ............................................................................... 8-4

8-4 Process Data Objects (PDOs)............................................................................................... 8-5

8-4-1 Introduction................................................................................................................................. 8-5

8-4-2 PDO Mappings ........................................................................................................................... 8-6

8-4-3 Assigning PDOs.......................................................................................................................... 8-8

8-5 Service Data Objects (SDOs)................................................................................................ 8-9

8-5-1 Introduction................................................................................................................................. 8-9

8-5-2 Abort Codes................................................................................................................................ 8-9

8-6 Communications between an EtherCAT Master and Slaves ........................................... 8-10

8-6-1 Communications Modes for Communications between an EtherCAT Master and Slaves ....... 8-10

8-6-2 Communications Modes for EtherCAT Slave Terminals ........................................................... 8-10

8-6-3 Communications Cycle ............................................................................................................. 8-10

Section 9 Setting Up Slave Terminals

9-1 Settings and Setting Procedures ......................................................................................... 9-2

9-1-1 Items to Set................................................................................................................................. 9-2

9-1-2 Slave Terminal Parameters......................................................................................................... 9-2

9-1-3 Variable Assignment Settings ..................................................................................................... 9-3

9-1-4 Setting Procedures ..................................................................................................................... 9-3

9-2 Setting Slave Terminal Parameters...................................................................................... 9-4

9-2-1 Items to Set................................................................................................................................. 9-4

9-2-2 Settings as an EtherCAT Slave .................................................................................................. 9-6

9-2-3 Setting the Unit Configuration Information.................................................................................. 9-8

9-2-4 I/O Allocation Information ......................................................................................................... 9-13

9-2-5 Unit Operation Settings............................................................................................................. 9-23

9-2-6 Unit Application Data ................................................................................................................ 9-25

9-2-7 Sysmac Studio Functions Used as Required ........................................................................... 9-25

NX-series EtherCAT Coupler Unit User’s Manual (W519)

9-3 Assigning Variables ............................................................................................................ 9-29

9-3-1 Methods to Assign Variables..................................................................................................... 9-29

9-3-2 Assigning Device Variables to I/O Ports....................................................................................9-30

9-3-3 I/O Ports for Status That Accept Device Variable Assignments ................................................9-32

9-3-4 Assigning Axis Variables ...........................................................................................................9-33

9-4 Transferring and Comparing Settings ............................................................................... 9-34

9-4-1 Transferring Settings................................................................................................................. 9-34

9-4-2 Comparing Settings...................................................................................................................9-36

9-5 Backing Up Settings............................................................................................................ 9-37

9-5-1 Backup Functions...................................................................................................................... 9-37

9-5-2 SD Memory Card Backup Function...........................................................................................9-38

9-5-3 Sysmac Studio Controller Backup Function..............................................................................9-38

9-5-4 Data That Is Backed Up............................................................................................................ 9-39

9-5-5 Backing Up the Slave Terminal Settings by Transferring Data.................................................. 9-40

9-6 Precautions in Changing the Unit Configuration ............................................................. 9-41

9-6-1 I/O Data That Require Specification of NX Unit Numbers......................................................... 9-41

9-6-2 Synchronous I/O Refresh Cycle................................................................................................9-42

9-6-3 Using Settings from NX Units on Other Slave Terminals ..........................................................9-43

Section 10 I/O Refreshing

10-1 Introduction to I/O Refreshing for EtherCAT Slave Terminals ........................................ 10-2

10-2 I/O Refreshing for EtherCAT Slaves................................................................................... 10-4

10-2-1 I/O Refreshing Modes ...............................................................................................................10-4

10-2-2 I/O Refreshing Mode Operation ................................................................................................ 10-4

10-3 I/O Refreshing for EtherCAT Slave Terminals................................................................... 10-6

10-3-1 I/O Refreshing Methods ............................................................................................................10-6

10-3-2 Setting the I/O Refreshing Methods..........................................................................................10-6

10-3-3 Selecting NX Units ....................................................................................................................10-7

10-3-4 I/O Refreshing Method Operation ............................................................................................. 10-7

Section 11 EtherCAT Coupler Unit Functions

11-1 Functions ............................................................................................................................. 11-3

11-2 NX Unit Mounting Settings ................................................................................................. 11-5

11-2-1 Introduction ............................................................................................................................... 11-5

11-2-2 Applications............................................................................................................................... 11-6

11-2-3 Operating Specifications for NX Units That Are Set as Unmounted Units ................................ 11-6

11-2-4 Setting NX Units as Unmounted Units ...................................................................................... 11-7

11-3 Sysmac Device Functionality Unique to EtherCAT Slaves.............................................. 11-8

11-4 Security .............................................................................................................................. 11-10

11-4-1 Supported Security Functions ................................................................................................. 11-10

11-4-2 Specifications of Verification of Operation Authority for the EtherCAT Slave Terminal ........... 11-10

11-5 Event Logs ......................................................................................................................... 11-12

11-5-1 Introduction ............................................................................................................................. 11-12

11-5-2 Detailed Information on Event Logs........................................................................................ 11-13

11-5-3 Reading Event Logs ................................................................................................................ 11-16

11-5-4 Clearing Event Logs................................................................................................................ 11-17

11-5-5 Exporting the Event Log.......................................................................................................... 11-19

11-6 Clearing All Memory .......................................................................................................... 11-20

11-6-1 Introduction ............................................................................................................................. 11-20

11-6-2 Details on Clearing All Memory............................................................................................... 11-20

11-6-3 Procedure for Clearing All Memory......................................................................................... 11-21

11-7 Restarting........................................................................................................................... 11-22

11-7-1 Introduction ............................................................................................................................. 11-22

NX-series EtherCAT Coupler Unit User’s Manual (W519)

11-7-2 Details on Restarting ...............................................................................................................11-22

11-7-3 Procedure for Restarting..........................................................................................................11-23

11-8 Changing Event Levels ..................................................................................................... 11-24

11-8-1 Introduction ..............................................................................................................................11-24

11-8-2 Details on Changing Event Levels...........................................................................................11-24

11-8-3 Procedure to Change an Event Level......................................................................................11-25

11-9 Resetting Errors ................................................................................................................ 11-27

11-9-1 Introduction ..............................................................................................................................11-27

11-9-2 Details on Resetting Errors......................................................................................................11-27

11-9-3 Procedure to Reset Errors .......................................................................................................11-28

Section 12 Communications Performance

12-1 Performance of Process Data Communications .............................................................. 12-2

12-1-1 I/O Response Times for Synchronous I/O Refreshing.............................................................. 12-2

12-1-2 I/O Response Times for Free-Run Refreshing ....................................................................... 12-14

12-2 Message Response Time.................................................................................................. 12-22

12-2-1 Special Instructions................................................................................................................. 12-22

12-2-2 Message Response Time....................................................................................................... 12-22

Section 13 Troubleshooting

13-1 How to Check for Errors .....................................................................................................13-2

13-2 Checking for Errors and Troubleshooting with the Indicators ....................................... 13-3

13-2-1 Checking for Errors and Troubleshooting with the Indicators on the EtherCAT Coupler Unit... 13-3

13-2-2 Checking for Errors and Troubleshooting with the Indicators on the NX Units ........................13-11

13-3 Checking for Errors and Troubleshooting on the Sysmac Studio................................ 13-12

13-3-1 Checking for Errors from the Sysmac Studio.......................................................................... 13-12

13-3-2 Event Codes for Errors and Troubleshooting Procedures ...................................................... 13-14

13-4 Resetting Errors ................................................................................................................ 13-40

13-5 Error Notification Methods ............................................................................................... 13-41

13-6 Error Notifications Based on the Sysmac Error Status ................................................. 13-42

13-7 Emergency Messages ....................................................................................................... 13-43

13-7-1 Enabling/Disabling Emergency Message Notification ............................................................ 13-43

13-7-2 Error Logs ............................................................................................................................... 13-43

13-7-3 Emergency Error Codes ......................................................................................................... 13-44

13-8 Error Notifications Based on the AL Status.................................................................... 13-47

13-8-1 Procedure for Checking AL Status Codes .............................................................................. 13-47

13-8-2 AL Status Codes..................................................................................................................... 13-47

13-9 Troubleshooting Other Errors .......................................................................................... 13-50

13-10Troubleshooting Flow When Errors Occur ..................................................................... 13-51

13-10-1 When the Sysmac Studio Is Connected to an NJ-series CPU Unit ........................................ 13-51

13-10-2 When the Sysmac Studio Is Connected to the EtherCAT Coupler Unit.................................. 13-52

13-11Troubleshooting When the Sysmac Studio Cannot Go Online..................................... 13-53

13-11-1 Causes and Corrective Actions When the Sysmac Studio Cannot Go Online ....................... 13-53

13-11-2 Troubleshooting by Cause ...................................................................................................... 13-54

Section 14 Maintenance and Inspection

14-1 Cleaning and Maintenance ................................................................................................. 14-2

14-1-1 Cleaning.................................................................................................................................... 14-2

14-1-2 Periodic Inspections.................................................................................................................. 14-2

NX-series EtherCAT Coupler Unit User’s Manual (W519)

14-2 Maintenance Procedures .................................................................................................... 14-4

14-2-1 Backing Up Data ....................................................................................................................... 14-4

14-2-2 Replacement Procedure for the EtherCAT Coupler Unit........................................................... 14-5

14-2-3 Basic Replacement Procedure for NX Units ............................................................................. 14-6

Appendices

A-1 Dimensions ............................................................................................................................A-3

A-1-1 EtherCAT Coupler Unit................................................................................................................A-3

A-1-2 End Cover ...................................................................................................................................A-4

A-2 Supplementary Information on Sysmac Studio Functions................................................A-5

A-2-1 Functional Differences on the Sysmac Studio Based on the Connected Port ............................A-5

A-2-2 Transferring the Unit Operation Settings.....................................................................................A-6

A-3 Special Instructions...............................................................................................................A-7

A-3-1 Instructions..................................................................................................................................A-7

A-3-2 Specifying the Targets for Instructions ........................................................................................A-7

A-4 Connecting to Masters from Other Manufacturers ............................................................A-9

A-4-1 Basic Connection Procedures.....................................................................................................A-9

A-4-2 Supplementary Information for Connections with a Master from Another Manufacturer ..........A-10

A-5 CoE Objects .........................................................................................................................A-13

A-5-1 Object Dictionary Area ..............................................................................................................A-13

A-5-2 Data Type ..................................................................................................................................A-13

A-5-3 Assigning Objects .....................................................................................................................A-14

A-5-4 Format of Objects......................................................................................................................A-16

A-5-5 Communication Objects............................................................................................................A-17

A-5-6 PDO Mapping Objects ..............................................................................................................A-21

A-5-7 Sync Manager Communications Objects..................................................................................A-30

A-5-8 Manufacturer-specific Object 1 .................................................................................................A-34

A-5-9 Manufacturer-specific Object 2 .................................................................................................A-37

A-5-10 Device Profile Area ...................................................................................................................A-44

A-5-11 Modular Device-specific Area ...................................................................................................A-49

A-6 NX Objects............................................................................................................................A-52

A-6-1 NX Objects................................................................................................................................A-52

A-6-2 Format of Object Descriptions...................................................................................................A-52

A-6-3 Unit Information Object .............................................................................................................A-53

A-6-4 Objects That Accept I/O Allocations..........................................................................................A-54

A-6-5 Other Objects............................................................................................................................A-56

A-7 Version Information.............................................................................................................A-59

A-7-1 Relationship between the Unit Versions of EtherCAT Coupler Unit

A-7-2 Relationship between Unit Versions of EtherCAT Coupler Unit and CPU Units .......................A-59

Index

and Sysmac Studio VersionsA-59

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Relevant Manuals

To use the EtherCAT Coupler Unit, you must refer to the manuals for all related products.

Read all of the manuals that are relevant to your system configuration and application before you use the NX-series EtherCAT Coupler Unit.

Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Stu- dio Version 1 Operation Manual (Cat. No. W504) for information on the Sysmac Studio.

NJ Series

Commu-

nications

Coupler

Unit

NX Series

NX Units All Units

Learning about the NX-series Units

Specifications  

Functionality  

Application procedures

Learning about Slave Terminals

Slave Terminal specifications

System configuration 

Rules on building systems

Slave Terminal application procedures

Slave Terminal installation procedures

Support Software connection procedures

Procedure to estimate Slave Terminal performance

Using NX-series Units with NJ-series Controllers

Using a Slave Terminal connected to the built-in EtherCAT port on an NJ-series CPU Unit

Procedures for performing motion control with Position Interface Units

  



 



NX-series EtherCAT Coupler Unit User’s Manual (W519)

Troubleshooting

NX-series Digital I/O Units User′s

Manual

NX-series Position Interface Units

User's Manual

Managing errors for the overall NJ-series Controller

Troubleshooting Slave Terminals and Communications Coupler Units

Troubleshooting NX Units

Performing Unit maintenance

Referencing data lists for NX Unit power consumptions, weights, etc.

NJ Series

NJ-series CPU Unit Hardware

User's Manual

NJ-series CPU Unit Motion

Control User's Manual



Relevant Manuals

NX Series

Commu-

nications

Coupler

Unit

NX-series EtherCAT Coupler Unit

User's Manual





 

NX Units All Units

NX-series Analog I/O Units User's

Manual

NX-series System Units User's

Manual

NX-series Data Reference

Manual



NX-series EtherCAT Coupler Unit User’s Manual (W519)

Manual Structure

4-9

4 Installation and Wiring

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

gnitn

3-4

rel

noC

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.

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 and Icons

The following page structure and icons are used in this manual.

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

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Safe Use

Precautions for Correct Use

Additional Information

Version Information

Special Information

RightLeft

Down

Special information in this manual is classified as follows:

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

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

Additional information to read as required.

This information is provided to increase understanding or make operation easier.

Manual Structure

Information on differences in specifications and functionality for CPU Units and EtherCAT Coupler Units with different unit versions and for different versions of the Sysmac Studio is given.

Note References are provided to more detailed or related information.

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 transfer the data in the direction that is specified by the user.

• In this manual, the directions in relation to the Units are given in the following figure, which shows upright installation.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Read and Understand this Manual

Please read and understand this manual before using the products. Please consult your OMRON representative if you have any questions or comments.

Warranty and Limitations of Liability

WARRANTY

OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON.

OMRON MAKES NO WARRANTY OR REPRESENTAT IO N, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.

LIMITATIONS OF LIABILITY

OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR COMMERCIAL LOSS IN ANY WAY C ONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.

In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted.

IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTA I NED AND NOT SUBJECT TO CON

TA MI NATI O N, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Read and Understand this Manual

Application Considerations

SUITABILITY FOR USE

OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products.

At the customer's request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use.

The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products:

•Ou

tdoor use, uses involving potential chemical contamination or electrical interference, or conditions or

uses not described in this manual.

• Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations.

• Systems, machines, and equipment that could present a risk to life or property.

Please know and observe all prohibitions of use applicable to the products.

NEVER USE THE PRODUCTS 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 PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPME

NT OR SYSTEM.

PROGRAMMABLE PRODUCTS

OMRON shall not be responsible for the user's programming of a programmable product, or any consequence thereof.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Read and Understand this Manual

Disclaimers

CHANGE IN SPECIFICATIONS

Product specifications and accessories may be changed at any time based on improvements and other reasons.

It is our practice to change model numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the products may be changed without any notice. When in doubt, special model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products.

DIMENSIONS AND WEIGHTS

Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown.

PERFORMANCE DATA

Performance data given in this manual 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 users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability.

ERRORS AND OMISSIONS

The information in this manual has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Safety Precautions

WARNING

Caution

Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. Additionally, there may be severe property damage.

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury, or property damage.

Definition of Precautionary Information

The following notation is used in this manual to provide precautions required to ensure safe usage of an NX-series EtherCAT Coupler Unit.

The safety precautions that are provided are extremely important to safety. Always read and heed the information provided in all safety precautions.

The following notation is used.

Safety Precautions

Symbols

The circle and slash symbol indicates operations that you must not do.

The specific operation is shown in the circle and explained in text.

This example indicates prohibiting disassembly.

The triangle symbol indicates precautions (including warnings).

The specific operation is shown in the triangle and explained in text.

This example indicates a precaution for electric shock.

The triangle symbol indicates precautions (including warnings).

The specific operation is shown in the triangle and explained in text.

This example indicates a general precaution.

The filled circle symbol indicates operations that you must do.

The specific operation is shown in the circle and explained in text.

This example shows a general precaution for something that you must do.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Safety Precautions

WARNING

Warnings

During Power Supply

Do not touch the terminal section while power is ON.

Electric shock may occur.

Do not attempt to take any Unit apart.

In particular, high-voltage parts are present in Units that supply power while power is supplied or immediately after power is turned OFF. Touching any of these parts may result in electric shock. There are sharp parts inside the Unit that may cause injury.

Fail-safe Measures

Provide safety measures in external circuits to ensure safety in the system if an abnormality occurs due to malfunction of the CPU Unit, other Units, or slaves or due to other external factors affecting operation.

Not doing so may result in serious accidents due to incorrect operation. Emergency stop circuits, interlock circuits, limit circuits, and similar safety measures must be provided in external control circuits.

The CPU Unit will turn OFF all outputs from Basic Output Units in the following cases. The remote I/O slaves will operate according to the settings in the slaves.

• If a power supply error occurs.

• If the power supply connection becomes faulty.

• If a CPU watchdog timer error or CPU reset occurs.

• If a Controller error in the major fault level occurs.

• While the CPU Unit is on standby until RUN mode is entered after the power is turned ON

External safety measures must be provided to ensure safe operation of the system in such cases.

The outputs may remain ON or OFF due to deposition or burning of the output relays or destruction of the output transistors. As a countermeasure for such problems, external safety measures must be provided to ensure safe operation of the system.

If external power supplies for slaves or other devices are overloaded or short-circuited, the voltage will drop, outputs will turn OFF, and the system may be unable to read inputs. Provide external safety measures in control with monitoring of external power supply voltage as required so that the system operates safely in such a case.

You must take fail-safe measures to ensure safety in the event of incorrect, missing, or abnormal signals caused by broken signal lines, momentary power interruptions, or other causes.

Not doing so may result in serious accidents due to incorrect operation.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Voltage and Current Inputs

Caution

Make sure that the voltages and currents that are input to the Units and slaves are within the specified ranges.

Inputting voltages or currents that are outside of the specified ranges may cause accidents or fire.

Transferring

Always confirm safety at the destination node before you transfer Unit configuration information, parameters, settings, or other data from tools such as the Sysmac Studio.

The devices or machines may operate unexpectedly, regardless of the operating mode of the Controller.

Cautions

Safety Precautions

Wiring

When you connect a computer or other peripheral device to a Communications Coupler Unit that has a non-isolated DC power supply, either ground the 0-V side of the external power supply (i.e. Unit power supply) or do not ground it at all.

If the peripheral devices are grounded incorrectly, the external power supply (i.e. Unit power supply) may be short-circuited.

Never ground the 24-V side of the power supply, as shown in the following figure.

NX Unit power supply

0 V

Peripheral device

(e.g., computer)

Communications Coupler Unit

Non-isolated DC power

supply (internal power

supply circuit)

Peripheral device

cable

24 V

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Ground terminal

Unit power supply

Safety Precautions

Online Editing

Execute online editing only after confirming that no adverse effects will be caused by deviations in the timing of I/O. If you perform online editing, the task execution time may exceed the task period, I/O may not be refreshed with external devices, input signals may not be read, and output timing may change.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Safe Use

Down

Transporting

• When transporting any Unit, use the special packing box for it. Also, do not subject the Unit to excessive vibration or shock during transportation.

• Do not drop any Unit or subject it to abnormal vibration or shock. Doing so may result in Unit malfunction or burning.

Mounting

• Mount terminal blocks and connectors only after checking the mounting location carefully.

• Be sure that the terminal blocks, expansion cables, and other items with locking devices are properly locked into place.

Precautions for Safe Use

Installation

• Do not apply labels or tape to the Unit. When the Unit is installed or removed, adhesive or scraps may adhere to the pins in the NX bus connector, which may result in malfunctions.

• Do not write on the Communications Coupler Unit or an NX Unit with ink within the restricted region that is shown in the following figure. Also do not get this area dirty. When the Unit is installed or removed, ink or dirt may adhere to the pins in the NX bus connector, which may result in malfunctions in the Slave Terminal.

Restricted

region (shaded

portion)

Communications Coupler

Unit or NX Unit

• For the installation orientations in the following figure, support the cables, e.g., with a duct, so that the End Plate on the bottom is not subjected to the weight of the cables. The weight of the cables may cause the bottom End Plate to slide downward so that the Slave Terminal is no longer secured to the DIN Track, which may result in malfunctions.

NX Unit

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Safe Use

NG NG

Wiring

• Double-check all switches and other settings and double-check all wiring to make sure that they are correct before turning ON the power supply. Use the correct wiring parts and tools when you wire the system.

• Do not pull on the cables or bend the cables beyond their natural limit. Also, do not place heavy objects on top of the cables or other wiring lines. Doing so may break the cable.

• When wiring or installing the Units, do not allow metal fragments to enter the Units.

• Do not press the flat-blade screwdriver straight into the release holes on a screwless clamping terminal block. Doing so may damage the terminal block.

NG OK

• When you insert a flat-blade screwdriver into a release hole on a screwless clamping terminal block, press it down with a force of 30N or less. Applying excessive force may damage the terminal block.

• Do not incline or twist the flat-blade screwdriver while it is in a release hole on a screwless clamping terminal block. Doing so may damage the terminal block.

Power Supply Design

• Use all Units within the I/O power supply ranges that are given in the specifications.

• Supply sufficient power according to the contents of this manual.

• Use the power supply voltage that is specified in this manual.

• Do not apply voltages that exceed the rated value to any Input Unit.

• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum ratings.

• Inrush current occurs when the power supply is turned ON. When selecting fuses or breakers for external circuits, consider their fusing and detection characteristics as well as the above precautions and allow sufficient margin in shut-off performance.

• Install external breakers and take other safety measures against short-circuiting and overcurrents in external wiring.

Turning ON the Power Supply

• When you set the Operating Mode at Startup, confirm that no adverse effect will occur in the system.

Actual Operation

• Before you start operation, always register the NX Units that are connected to the Communications Coupler Unit in the host communications master as the Unit Configuration Information.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Safe Use

• Check the user program, data, and parameter settings for proper execution before you use them for actual operation.

Turning OFF the Power Supply

• Do not disconnect the cable or turn OFF the power supply to the Controller or a Slave Terminal when downloading data or the user program from Sysmac Studio.

• Always turn OFF the external power supply to the Units before attempting any of the following.

Mounting or removing an NX Unit, Communications Coupler Unit, or CPU Unit Assembling Units Setting DIP switches or rotary switches Connecting or wiring cables Attaching or removing terminal blocks or connectors

Units that supply power continue to supply power to the Units for up to several seconds after the power supply is turned OFF. The PWR indicator remains lit as long as power is supplied. Confirm that the PWR indicator is not lit before you perform any of the above.

Operation

• Confirm that the controlled system will not be adversely affected before you perform any of the following operations.

Changing the operating mode of the CPU Unit (including changing the setting of the Operating Mode at Startup) Changing the user program or settings Changing set values or present values Forced refreshing

• Always sufficiently check the safety at the connected devices before you change the settings of an EtherCAT slave or Special Unit.

General Communications

• Do not exceed the ranges that are given in the specifications for the communications distance and number of connected Units.

EtherCAT Communications

• Make sure that the communications distance, number of nodes connected, and method of connection for EtherCAT are within specifications. Do not connect EtherCAT Coupler Units to EtherNet/IP, a standard in-house LAN, or other networks. An overload may cause the network to fail or malfunction.

• Malfunctions or unexpected operation may occur for some combinations of EtherCAT revisions of the master and slaves. If you disable the revision check in the network settings, check the slave revision settings in the master and the actual slave revisions, and then make sure that functionality is compatible in the manuals or other references. You can check the slave versions in the settings from the Sysmac Studio and you can check the actual slave revisions from the Sysmac Studio or on slave nameplates.

• After you transfer the user program, the CPU Unit is restarted and communications with the EtherCAT slaves are cut off. During that period, the slave outputs behave according to the slave settings. The time that communications are cut off depends on the EtherCAT network configuration. Before you transfer the user program, confirm that the system will not be adversely affected.

• EtherCAT communications are not always established immediately after the power supply is turned ON. Use the system-defined variables in the user program to confirm that communications are established before attempting control operations.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Safe Use

• If frames sent to EtherCAT slaves are lost due to noise or other causes, slave I/O data is not communicated, and the intended operation is sometimes not achieved. Perform the following processing if noise countermeasures are necessary.

Program the _EC_InDataInvalid (Input Data Disable) system-defined variable as an interlock condition in the user program. Set the PDO communications consecutive timeout detection count setting in the EtherCAT master to at least 2. Refer to the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for details.

• When an EtherCAT slave is disconnected, communications will stop and control of the outputs will be lost not only for the disconnected slave, but for all slaves connected after it. Confirm that the system will not be adversely affected before you disconnect a slave.

• If you disconnect the cable from an EtherCAT slave to disconnect it from the network, any current communications frames may be lost. If frames are lost, slave I/O data is not communicated, and the intended operation is sometimes not achieved. Perform the following processing for a slave that needs to be replaced.

Unit Replacement

• When you replace a Unit, start operation only after you transfer the settings and variables that are required for operation to the new Unit.

Disposal

• Dispose of the product according to local ordinances as they apply.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Precautions for Correct Use

Storage, Mounting, and Wiring

• Follow the instructions in this manual to correctly perform installation.

• Do not operate or store the Units in the following locations. Operation may stop or malfunction may occur.

Locations subject to direct sunlight Locations subject to temperatures or humidity outside the range specified in the specifications Locations subject to condensation as the result of severe changes in temperature Locations subject to corrosive or flammable gases Locations subject to dust (especially iron dust) or salts Locations subject to exposure to water, oil, or chemicals Locations subject to shock or vibration

• Take appropriate and sufficient countermeasures during installation in the following locations.

Locations subject to strong, high-frequency noise Locations subject to static electricity or other forms of noise Locations subject to strong electromagnetic fields Locations subject to possible exposure to radioactivity Locations close to power lines

• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any static build-up.

• Use the rated power supply voltage for the Units that supply power. Take appropriate measures to ensure that the specified power with the rated voltage and frequency is supplied in places where the power supply is unstable.

• Install the Units away from sources of heat and ensure proper ventilation. Not doing so may result in malfunction, in operation stopping, or in burning.

• Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning, electric shock, or failure.

• Use the EtherCAT connection methods and applicable cables that are specified in this manual and in the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505). Otherwise, communi- cations may be faulty.

Precautions for Correct Use

Actual Operation

• If you change the event level of an error, the output status when the error occurs may also change. Confirm safety before you change an event level.

Turning OFF the Power Supply

• Do not turn OFF the power supply while data is being transferred.

• Do not turn OFF the power supply while parameters are being written to the Communications Coupler Unit or NX Units.

EtherCAT Communications

• Do not disconnect the EtherCAT communications cables during operation. The outputs will become unstable. However, for the built-in EtherCAT port on the NJ-series CPU Unit, it is OK to disconnect the communications cable from an EtherCAT Slave Terminal that has been disconnected from communications in the software.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Regulations and Standards

Conformance to EC Directives

Applicable Directives

• EMC Directives

• Low Voltage Directive

Concepts

 EMC Directives

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.*1

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 comply with EC Directives will vary depending on the configuration, wiring, and other conditions of the equipment or control panel on which the OMRON devices are installed. The customer must, therefore, perform the final check to confirm that devices and the overall machine conform to EMC standards.

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

EMS (Electromagnetic Susceptibility): EN 61131-2 EMI (Electromagnetic Interference): EN 61131-2 (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 NX-series Units comply with EC Directives. To ensure that the machine or device in which the NX-series Units are used complies with EC Directives, the following precautions must be observed.

• The NX-series Units must be installed within a control panel.

• You must use reinforced insulation or double insulation for the DC power supplies that are connected as the Unit power supplies and I/O power supplies for the NX-series Units.

We recommend that you use the OMRON S8JX-series Power Supplies. EMC standard compliance was confirmed for the recommended Power Supplies.

• NX-series Units that comply with EC Directives also conform to the Common Emission Standard (EN 61131-2). Radiated emission characteristics (10-m regulations) may vary 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 in which the NX-series Units are used complies with EC Directives.

• You must use power supplies with an output hold time of 10 ms or longer for the DC power supplies that are connected as the Unit power supplies and I/O power supplies for the NX-series Units.

• This is a Class A product (for industrial environments). In a residential environment, it may cause radio interference. If radio interference occurs, the user may be required to take appropriate measures.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Conformance to UL and CSA Standards

The NX-series Units comply with the following UL and CSA standards. The application conditions for standard compliance are defined. Refer to the Instruction Sheet that is provided with each Unit before application.

Conformance to KC Standards

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

Regulations and Standards

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.

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/.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Unit Versions

Notched

area

Unit

specifications

LOT No.

Unit version

Lot number

Unit model number

Lot number and unit version

Unit Versions

This section describes the notation that is used for unit versions, the confirmation method for unit versions, and the relationship between unit versions and Sysmac Studio versions.

Unit Versions

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

Notation of Unit Versions on Products

The unit version is given with the Unit specifications on the side of the Unit or in the notched area.

The following information is provided in the Unit specifications on the Unit.

Unit model number Gives the model of the Unit.

Unit version Gives the unit version of the Unit.

Lot number Gives the lot number of the Unit.

Name Function

DDMYY: Lot number, : Used by OMRON.

“M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Unit Versions

The following information is provided in the notched area on the Unit.

Name Function

Lot number and unit version

Gives the lot number and unit version of the Unit.

• DDMYY: Lot number, : Used by OMRON. “M” gives the month (1 to 9: January to September, X: October, Y: November, Z: December)

•1: Unit version The decimal portion of the unit version is omitted. (It is provided in the Unit specifications.)

Confirming Unit Versions with the Sysmac Studio

You can use the Unit Production Information on the Sysmac Studio to check the unit versions EtherCAT Coupler Unit and NX Units.

1 Double-click EtherCAT under Configurations and Setup in the Multiview Explorer, and then

double-click the EtherCAT Coupler Unit. Or, right-click the EtherCAT Coupler Unit and select Edit from the menu. The Edit Slave Terminal Configuration Tab Page is displayed.

You can also display the Edit Slave Terminal Configuration Tab Page with any of the following operations.

Double-click EtherCAT under Configurations and Setup in the Multiview Explorer, right-click the EtherCAT Coupler Unit in the EtherCAT Configuration Edit Tab Page, and select Edit Slave Terminal Configuration.

Or, select the EtherCAT Coupler Unit on the EtherCAT Configuration Edit Tab Page click the Edit Slave Terminal Configuration Button.

2 Go online. 3 Right-click the EtherCAT Coupler Unit and select Display Production Information from the

menu.

The Production Information Dialog Box is displayed.

Simple Display

In this example, “Ver.1.0” is displayed next to the Unit model.

The following items are displayed.

•Slot number

• Unit model number

•Unit version

• Serial number

• Lot number

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Detailed Display

Unit Versions

• Hardware version

• Software version

The software version is displayed only for Units that contain software.

Unit Versions and Sysmac Studio Versions

The functions that are supported depend on the unit version of the Unit. The version of Sysmac Studio that supports the functions that were added for an upgrade is also required to use those functions.

Refer to A-7 Version Information on page A-59 for the functions that are supported by each unit version.

Unit Version Notation

In this User’s Manual, unit versions are specified as shown in the following table.

Unit version in Unit specifications

on the product

Unit version 1.0 or later Ver. 1. or later Unless unit versions are specified, the infor-

Notation in this manual Remarks

mation in this manual applies to all unit versions.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

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

NX-series EtherCAT Coupler Unit User’s Manual (this manual)

NJ-series CPU Unit Hardware User´s Manual

NJ-series CPU Unit Software User's Manual

NJ-series CPU Unit Built-in EtherCAT Port User's Manual

NX-series Digital I/O Units User’s Manual

W519 NX-ECC201 Leaning how to

use an NX-series EtherCAT Coupler Unit and EtherCAT Slave Terminals

W500 NJ501-

NJ301-

W501 NJ501-

NJ301-

W505 NJ501-

NJ301-

W521 NX-ID

NX-OC

NX-OD

Learning the basic specifications of the NJ-series CPU Units, including introductory information, designing, installation, and maintenance.

Mainly hardware information is provided.

Learning how to program and set up an NJ-series CPU Unit.

Mainly software information is provided.

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

Learning how to use NX-series Digital I/O Units

The following items are described: the overall system and configuration methods of an EtherCAT Slave Terminal (which consists of an NX-series EtherCAT Coupler Unit and NX Units), and information on hardware, setup, and functions to set up, control, and monitor NX Units through EtherCAT.

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

• Features and system configuration

• Overview

• 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 an NJ-series 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).

Information on the built-in EtherCAT port is provided.

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). The hardware, setup methods, and

functions of the NX-series Digital I/O Units are described.

Related Manuals

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Related Manuals

Manual name Cat. No. Model numbers Application Description

NX-series Analog I/O Units User’s Manual

NX-series System Units User’s Manual

NX-series Position Interface Units User’s Manual

NX-series Data Reference Manual

NJ-series CPU Unit Motion Control User's Manual

NJ-series Instructions Reference Manual

NJ-series Motion Control Instructions Reference Manual

Sysmac Studio Version 1 Operation Manual

W522 NX-AD

NX-DA

NX-TS

W523 NX-PD1

NX-PF0

NX-PC0

NX-TBX01

W524 NX-EC0

NX-ECS

NX-PG0

W525 NX- Referencing lists of

W507 NJ501-

NJ301-

W502 NJ501-

NJ301-

W508 NJ501-

NJ301-

W504 SYSMAC-

SE2

Learning how to use NX-series Analog I/O Units and Temperature Input Units

Learning how to use NX-series System Units

Learning how to use NX-series Position Interface Units

the data that is required to configure systems with NX-series Units

Learning about motion control settings and programming concepts.

Learning detailed specifications on the basic instructions of an NJ-series CPU Unit.

Learning about the specifications of the motion control instructions.

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

The hardware, setup methods, and functions of the NX-series Analog I/O Units and Temperature Input Units are described.

The hardware and functions of the NX-series System Units are described.

The hardware, setup methods, and functions of the NX-series Incremental Encoder Input Units, SSI Input Units, and Pulse Output Unit are described.

Lists of the power consumptions, weights, and other NX Unit data that is required to configure systems with NX-series Units are provided.

The settings and operation of the CPU Unit and programming concepts for motion control 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 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 Soft- ware 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. W501) and NJ-series CPU Unit Motion Control User's Manual (Cat. No. W507).

Describes the operating procedures of the Sysmac Studio.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Manual name Cat. No. Model numbers Application Description

NJ-series Troubleshooting Manual

W503 NJ501-

NJ301-

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

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).

Related Manuals

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Terminology

Term

application layer status, AL status --- Status for indicating information on errors that occur in an application on

CAN application protocol over EtherCAT CAN in Automation CiA CiA is the international users' and manufacturers' group that develops

Communications Coupler Units --- The generic name of an interface unit for remote I/O communications on

device profile --- A collection of device dependent information and functionality providing

device variable --- A variable in the NJ-series CPU Unit to which process data on an Ether-

distributed clock DC Clock distribution mechanism used to synchronize EtherCAT slaves and

EtherCAT slave controller ESC A controller for EtherCAT slave communications. EtherCAT slave information ESI An XML file that contains setting information for an EtherCAT slave. EtherCAT state machine ESM An EtherCAT communications state machine. EtherCAT Technology Group ETG The ETG is a global organization in which OEM, end users, and technol-

I/O map settings --- Settings that assign variables to I/O ports. Assignment information

I/O port --- A logical interface that is used by the CPU Unit to exchange data with an

I/O refreshing --- Cyclic data exchange with external devices that is performed with prede-

index --- Address of an object within an application process. network configuration information --- The EtherCAT network configuration information held by the EtherCAT

NX bus --- The NX-series internal bus. object --- An abstract representation of a particular component within a device,

object dictionary OD Data structure that contains description of data type objects, communi-

Operational --- A state in EtherCAT communications where SDO communications and

PDO communications --- An acronym for process data communications. Pre-Operational --- A state in EtherCAT communications where only SDO communications

primary periodic task --- The task with the highest priority. process data --- Collection of application objects designated to be downloaded cyclically

process data communications --- One type of EtherCAT communications in which process data objects

process data object PDO A structure that describes the mappings of parameters that have one or

receive PDO RxPDO A process data object received by an EtherCAT slave.

Abbreviation

a slave.

CoE A CAN application protocol service implemented on EtherCAT.

and supports higher-layer protocols.

a network between NX Units and a host network master.

consistency between similar devices of the same device type.

CAT slave is allocated. Slave process data is accessed by directly reading and writing device variables from user applications on the NJ-series CPU Unit.

the EtherCAT master.

ogy providers join forces to support and promote the further technology development.

between I/O ports and variables.

external device (slave or Unit).

termined memory addresses.

master.

which consists of data, parameters, and methods.

cation objects and application objects.

I/O are possible.

are possible with the slaves, i.e., no I/O can be performed.

or acyclically for the purpose of measurement and control.

(PDOs) are used to exchange information cyclically and in realtime. This is also called PDO communications.

more process data entities.

Description

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Terminology

Term

Safe-Operational --- A state in EtherCAT communications where only SDO communications

SDO communications --- One type of EtherCAT communications in which service data objects

service data object SDO CoE asynchronous mailbox communications where all objects in the

Slave Information Interface SII Slave information that is stored in non-volatile memory in the slave. Slave Terminal --- A building-block remote I/O terminal to which a Communications Cou-

subindex --- Sub-address of an object within the object dictionary. Sync Manager SM Collection of control elements to coordinate access to concurrently used

task period --- The interval at which the primary periodic task or a periodic task is exe-

transmit PDO TxPDO A process data object sent from an EtherCAT slave.

Abbreviation

Description

and reading input data from slaves are possible. Outputs from slaves are not performed.

(SDOs) are used to transmit information whenever required.

object dictionary can be read and written.

pler Unit and NX Units are mounted

objects.

cuted.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Revision History

Cat. No.

W519-E1-01

Revision code

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 April 2013 Original production

NX-series EtherCAT Coupler Unit User’s Manual (W519)

EtherCAT Networks

Features and System Configuration

EtherCAT Coupler Unit Functions

I/O Refreshing

Specifications and Application Procedures

Communications Performance

Part Names and Functions

Troubleshooting

Index

Designing the Power Supply System

Maintenance and Inspection

Appendices

Wiring

Installation

EtherCAT Communications

Setting Up Slave Terminals

Sections in this Manual

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Sections in this Manual

NX-series EtherCAT Coupler Unit User’s Manual (W519)

EtherCAT Networks

This section provides an introduction to EtherCAT networks.

1-1 Introduction to EtherCAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-1 How EtherCAT Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

1-1-2 Types of EtherCAT Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

1-2 EtherCAT Network Configuration Elements . . . . . . . . . . . . . . . . . . . . . . . . 1-5

1-2-1 System Configuration Example of an EtherCAT Network . . . . . . . . . . . . . . . . . 1-5

1-2-2 Introduction to Configuration Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 - 1

1 EtherCAT Networks

EtherCAT master

Slave Slave

Slave

Ethernet frames

OUT

Data

•

The slave reads output data addressed to it.

•

The slave writes input data.

1-1 Introduction to EtherCAT

EtherCAT (Ethernet Control Automation Technology) is a high-performance industrial network system that enables faster and more efficient communications based on Ethernet.

Each node achieves a short communications cycle time by transmitting Ethernet frames at high speed.

Although EtherCAT is a unique communications protocol, standard Ethernet technology is used for the physical layer, which means you can use Ethernet cables for wider application.

And the effectiveness of EtherCAT can be fully utilized not only in large control systems that require high processing speeds and system integrity, but also in small and medium control systems.

1-1-1 How EtherCAT Works

With EtherCAT, Ethernet frames pass through all of the slave nodes.

When a frame passes through a slave node, the slave node reads and writes the data in the area that is allocated to it in the frame in a few nanoseconds.

The Ethernet frames that are transmitted by the EtherCAT master pass through all EtherCAT slaves without stopping. The last slave returns all of the frames, which again pass through all of the slaves before returning to the EtherCAT master.

This mechanism ensures high speed and realtime data transmission.

1 - 2

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 EtherCAT Networks

Ethernet

header

CRC

Ethernet data (1,498 bytes max.)

Data

header

WKC

1st to nth EtherCAT telegrams

EtherCAT

header

1st EtherCAT

2nd EtherCAT

nth EtherCAT

. . . . .

EtherCAT frame

Ethernet frame

WKC: Working counter

The data exchanges that are cyclically performed between the EtherCAT master and EtherCAT slaves use EtherCAT telegrams that are stored directly in the Ethernet frames.

Each EtherCAT telegram consists of a telegram header (including the data length and one or more slave addresses), data, and a working counter (i.e., check bits).

If you think of an Ethernet frame as a train, the EtherCAT telegrams would be the cars of the train.

1-1 Introduction to EtherCAT

1-1-1 How EtherCAT Works

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 - 3

1 EtherCAT Networks

EtherCAT master

Slave

Ethernet frame

Slave Slave

Slave

Ethernet

header

Ether

CAT

header

1st EtherCAT

2nd EtherCAT

3rd EtherCAT

CRC

Logical process data

Data a

Data b

Data c

1-1-2 Types of EtherCAT Communications

The following 2 types of communications are available with EtherCAT.

PDO communications are executed in each EtherCAT communications cycle to refresh data continuously. SDO communications are executed between PDO communications.

Process Data Communications (PDO Communications)

PDO communications transfers process data cyclically and in realtime.

The EtherCAT master maps the logical process data space to the nodes to achieve cyclic communications between the EtherCAT master and slaves.

Mailbox Communications (SDO Communications)

SDO communications is used to perform message communications.

Whenever necessary, the EtherCAT master sends a command to a slave, and then the slave returns a response to the EtherCAT master.

The following data communications can be performed.

• Reading and writing process data

• Setting slaves

• Monitoring slave status

1 - 4

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 EtherCAT Networks

1-2 EtherCAT Network Configu-

1-2 EtherCAT Network Configuration Ele-

ments

This section describes the devices that configure EtherCAT networks and the usage of those devices.

1-2-1 System Configuration Example of an EtherCAT Network

This section provides a system configuration example of an EtherCAT network.

Sysmac Studio

NJ-series CPU Unit

ESI files

EtherCAT master

ration Elements

1-2-1 System Configuration Example of an EtherCAT Network

Input port

EtherCAT Junction Slave

Output ports

I/O power supply

ADR

Servo Drive (EtherCAT slave) Inverter (EtherCAT slave)

Built-in EtherCAT port

Communications cable

EtherCAT Slave Terminal (EtherCAT slave)

ADR

Unit power supply

EtherCAT Junction Slave

Digital I/O Slave (EtherCAT Slave)

ADR

Analog I/O Slave (EtherCAT slave)

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 - 5

1 EtherCAT Networks

1-2-2 Introduction to Configuration Devices

This section introduces the configuration devices.

EtherCAT Master

The EtherCAT master manages the network, monitors the status of the slaves, and exchanges I/O data with the slaves.

EtherCAT Slaves

The EtherCAT slaves output the output data that is received from the EtherCAT master through the EtherCAT network. They also send input data to the EtherCAT master through the EtherCAT network.

EtherCAT Slave Terminals

An EtherCAT Slave Terminal is a building-block slave that is created by mounting a group of NX Units to an EtherCAT Coupler Unit.

 EtherCAT Coupler Units

An EtherCAT Coupler Unit is a Communications Coupler Unit that connects NX Units to an EtherCAT network.

 NX Units

The NX Units perform process data communications with the EtherCAT master through the EtherCAT Coupler Unit.

Refer to Section 2 Features and System Configuration for details on the features and system configuration of an EtherCAT Slave Terminal.

EtherCAT Junction Slaves

A Junction Slave is used only to branch EtherCAT network wiring.

1 - 6

Sysmac Studio

The Sysmac Studio runs on a personal computer and it is used to configure EtherCAT networks and slaves, and to perform programming, monitoring, and troubleshooting.

Communications Cables

Use double-shielded cables with aluminum tape and braiding of Ethernet category 5 (100BASE-TX) or higher, and use straight wiring.

ESI (EtherCAT Slave Information) Files

The ESI files contain information that is unique to the EtherCAT slaves in XML format.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 EtherCAT Networks

You can load an ESI file into the Sysmac Studio to easily allocate slave process data and make other settings.

The ESI files for OMRON EtherCAT slaves are already installed in the Sysmac Studio.

You can update the Sysmac Studio to get the ESI files for the most recent models.

Unit Power Supplies

1-2 EtherCAT Network Configu-

ration Elements

Unit power supplies provide power for communications and the internal operation of EtherCAT Slave Te rm i na l s.

I/O Power Supplies

I/O power supplies provide power for the I/O operation of the external devices that are connected to EtherCAT Slave Terminals.

1-2-2 Introduction to Configuration Devices

NX-series EtherCAT Coupler Unit User’s Manual (W519)

1 - 7

1 EtherCAT Networks

1 - 8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Features and System Configuration

This section describes the features and system configurations of EtherCAT Slave Terminals.

2-1 Features of EtherCAT Slave Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

2-2 System Configurations of EtherCAT Slave Terminals . . . . . . . . . . . . . . . . 2-4

2-2-1 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4

2-2-2 Types of NX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6

2-3 Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-3-1 Applicable Support Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-3-2 Connection Method and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

2-3-3 Scope of Access When Connected to the USB Port on the EtherCAT

Coupler Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 - 1

2 Features and System Configuration

2-1 Features of EtherCAT Slave Termi-

nals

An EtherCAT Slave Terminal is a building-block EtherCAT slave that is created by mounting a group of NX Units to an EtherCAT Coupler Unit.

The NX Units can be flexibly combined with an EtherCAT Coupler Unit to achieve the optimum EtherCAT slave for the application with less wiring, less work, and less space.

The features of the EtherCAT Slave Terminals are described below.

Optimum Functionality and Ease of Operation Based on Unified Specifications

The EtherCAT Coupler Unit is designed with the same communications and user interface specifications as other Sysmac devices. This provides optimum functionality and ease of operation when used together with NJ-series Machine Automation Controllers and the Sysmac Studio Automation Software.

The Entire System Provides Extremely Accurate Synchronized Control

When the EtherCAT Coupler Unit is used together with NX Units that support synchronous I/O refreshing, all I/O refreshing is synchronized with the task period of the primary period of the NJ-series CPU Unit. This provides an even higher level of synchronized control accuracy because it suppresses jitter in the I/O response of the overall system.

This allows you to achieve the following control performance.

• Multiple Digital Input Units that support synchronous input refreshing process their inputs simultaneously, which improves the control accuracy of the system.

• Multiple Digital Output Units that support synchronous output refreshing process their outputs simultaneously. This allows the outputs to refresh output devices in multiple locations at the same time.

2 - 2

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 Features and System Configuration

Features That Reduce Equipment Design Work and Commissioning Work, and Encourage Modular Equipment Design

 Registering NX Units in the Unit Configuration Information as Unmounted

Units for Future Expansion (Designing, Commissioning, and Modularity)

You can register any NX Units as unmounted Units in the Unit configuration information. This allows the following possibilities.

• NX Units for future expansion can be registered in advance. This eliminates the need to change the user program when the NX Units are actually added. (Designing)

• If certain NX Units are temporarily unavailable, you can still debug the system in advance with the NX Units that are available. (Commissioning)

• Even if the number of NX Units changes depending on the type of equipment, the user program does not have to be changed. (Designing and Modularity)

 Exporting/importing Slave Terminal Settings and NX Unit Settings (Design-

ing)

2-1 Features of EtherCAT Slave Terminals

You can use the Sysmac Studio to export and import the EtherCAT Slave Terminal settings and NX Unit settings as files. This allows you to reuse settings from an EtherCAT Slave Terminal or NX Units for other EtherCAT Slave Terminals or NX Units.

 Simplified I/O Wiring with Screwless Clamping Terminal Blocks (Commis-

sioning)

The EtherCAT Coupler Unit and the NX Units use screwless clamping terminal blocks. The use of ferrules makes wiring an easy matter of inserting them. The screwless design greatly reduces wiring work.

 Support for Event Logs and Troubleshooting (Commissioning )

The EtherCAT Coupler Unit and the NX Units support the event logs in the NJ-series CPU Unit and troubleshooting on the Sysmac Studio. This gives the event codes which allow you to determine the cause of errors, and reduce the recovery work when an error occurs.

 Back up, Restore, and Compare Data with SD Memory Cards and the Sysmac

Studio (Commissioning)

You can back up, restore, and compare EtherCAT Slave Terminal settings to data on an SD Memory Card inserted in the NJ-series CPU Unit, or a specified memory device on the computer.

This allows you to reduce the recovery time when an error occurs in the equipment.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 - 3

2 Features and System Configuration

(A) EtherCAT master

NJ-series CPU Unit or master from another manufacturer

(G) Communications cable

Ethernet cables

(B) NX Series

EtherCAT Coupler Unit NX-ECC201

(E) Sysmac Studio

Support Software

(E) Sysmac Studio

Support Software

(F) ESI files

(D) End Cover

Built-in EtherCAT port

(F) ESI files

Peripheral USB port

.xml

Connection to peripheral USB port or built-in EtherNet/IP port on NJ-series CPU Unit

Connection to peripheral USB port on EtherCAT Coupler Unit

EtherCAT Slave Terminal

2-2 System Configurations of EtherCAT

Slave Terminals

This section describes the system configuration of an EtherCAT Slave Terminal.

2-2-1 System Configuration

An example of a system configuration for an EtherCAT Slave Terminal is shown below.

2 - 4

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 Features and System Configuration

2-2 System Configurations of EtherCAT

Let-

ter

(A)

EtherCAT master

(B) EtherCAT Coupler

Unit

(D) End Cover The End Cover is attached to the end of the Slave Terminal. (E) Sysmac Studio Sup-

port Software

(F) ESI (EtherCAT

Slave Information) file

(G) Communications

cable

*1. A CPU Unit with unit version 1.05 or later is required to connect an EtherCAT Slave Terminal to the built-in

EtherCAT port on an OMRON NJ-series CPU Unit. Refer to A-7-2 Relationship between Unit Versions of EtherCAT Coupler Unit and CPU Units on page A-59 for details. OMRON CJ1W-NC81/82 Position Control Units cannot be connected to the EtherCAT Slave Terminal even though they support EtherCAT.

*2. Version 1.06 or higher of the Sysmac Studio is required to set up an EtherCAT Slave Terminal. Refer to A-7-1

Relationship between the Unit Versions of EtherCAT Coupler Unit and Sysmac Studio Versions on page A-59 for details.

Item Description

The EtherCAT master manages the EtherCAT network, monitors the status of the slaves, and exchanges I/O data with the slaves. The EtherCAT Coupler Unit is an interface that performs process data communications between a group of NX Units and the EtherCAT master over an EtherCAT network.

The I/O data for the NX Units is first accumulated in the EtherCAT Coupler Unit and then all of the data is exchanged with the EtherCAT master at the same time.

The EtherCAT Coupler Unit can also perform message communications (SDO communications) with the EtherCAT master.

You can connect up to 63 NX Units.

Units perform process data communications with the EtherCAT master through the EtherCAT Coupler Unit.

Refer to 2-2-2 Types of NX Units on page 2-6 for the types of NX Units.

The Sysmac Studio runs on a personal computer and it is used to configure the

EtherCAT network and EtherCAT Slave Terminals, and to perform programming, monitoring, and troubleshooting.

You can connect the computer in which the Sysmac Studio is installed to the peripheral USB port or built-in EtherNet/IP port on an NJ-series CPU Unit. Or you can connect it to the peripheral USB port on the EtherCAT Coupler Unit to set up the EtherCAT Slave Terminal.

Refer to 2-3 Support Software on page 2-7 for the connection procedure. The ESI file contains information that is unique to the EtherCAT Slave Terminal in XML format. You can load the ESI file into the Sysmac Studio to easily allocate Slave Terminal process data and make other settings.

The ESI files for OMRON EtherCAT slaves are already installed in the Sysmac Studio. You can update the Sysmac Studio to get the ESI files for the most recent models.

Use a double-shielded cable with aluminum tape and braiding of category 5 (100BASE-TX) or higher, and use straight wiring.

Slave Terminals

2-2-1 System Configuration

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 - 5

2 Features and System Configuration

2-2-2 Types of NX Units

The following table lists some examples of the types of NX Units that are available.

Unit type Overview

Digital I/O Units These Units process I/O with digital signals.

Digital Input Units These Units process inputs with digital signals.

Digital Output Units These Units process outputs with digital signals.

Analog I/O Units These Units process I/O with analog signals.

Analog Input Units These Units process inputs with analog signals.

Analog Output Units These Units process outputs with analog signals.

Temperature Input Units These Units process inputs from temperature sensors.

System Units System Units are used as required to build a Slave Terminal.

Additional NX Unit Power Supply Unit Additional I/O Power Supply Unit

I/O Power Supply Connection Unit

Shield Connection Unit This Unit is used to ground more than one shield wire from

Position Interface Units These Units perform I/O processing of position data for posi-

Incremental Encoder Input Units

SSI Input Units These Units process serial signal inputs from absolute

Pulse Output Unit This Unit outputs pulses for positioning commands to a step-

Refer to the user’s manual for the specific Units for details.

This Unit is used when the NX Unit power supply is not sufficient. This Unit is used when the I/O power supply is not sufficient or to separate the power supply in the Slave Terminal.

This Unit is used when the I/O power supply terminals for connections to external I/O devices are not sufficient.

external I/O connections to the same ground.

tioning. These Units count pulses from incremental encoders.

encoders or linear scales that have an SSI interface.

per motor driver or other motor drive with a pulse input.

For information on the most recent lineup of NX Units, refer to NX-series catalogs or OMRON websites, or ask your OMRON representative.

2 - 6

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2-3 Support Software

This section describes the Support Software that is used to set up the EtherCAT Slave Terminal.

2-3-1 Applicable Support Software

This following Support Software can be used to set up the EtherCAT Slave Terminal.

Support Software Vers ion

Sysmac Studio 1.06 or higher

2 Features and System Configuration

2-3 Support Software

2-3-2 Connection Method and Procedures

This section describes the methods and procedures that are used to connect the Sysmac Studio to an EtherCAT Slave Terminal.

Going Online with the NJ-series CPU Unit

 Connection Methods

You can place the Sysmac Studio online with the EtherCAT Slave Terminal through the CPU Unit.

There are the following four methods that you can use, based on the connection configuration, to place the Sysmac Studio online with the NJ-series CPU Unit.

Connection method Connection diagram Description

Direct connection via USB

Direct connection via Ethernet

2-3-1 Applicable Support Software

The USB port on the computer is connected directly to the USB port on the CPU Unit.

This is the default connection configuration.

The Ethernet port on the computer is connected directly to the built-in EtherNet/IP port on the CPU Unit.

Remote connection via USB

Ethernet connection via a hub

*1. You cannot go online with a CPU Unit through the port on an EtherNet/IP Unit.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

The USB port on the computer is connected directly to the USB port on the CPU Unit and then a connection is made through the Ethernet network to the built-in EtherNet/IP port on another

CPU Unit.

The Ethernet port on the computer is connected through the Ethernet network to the built-in EtherNet/IP port on

a CPU Unit.

2 - 7

2 Features and System Configuration

 Connection Procedures

Refer to the NJ-Series Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for details on placing the Sysmac Studio online.

Going Online through the USB Port on the EtherCAT Coupler Unit

 Connection Methods

You can place the Sysmac Studio online with the EtherCAT Slave Terminal without going through the CPU Unit.

Connect the Sysmac Studio to the USB port on the EtherCAT Coupler Unit.

When the Sysmac Studio is placed online with the CPU Unit, some functions are not available. Refer to A-2-1 Functional Differences on the Sysmac Studio Based on the Connected Port on page A-5 for details.

 Connection Procedure

Use the following procedure to place the Sysmac Studio online.

Connect the EtherCAT Coupler Unit to a computer in which the Sysmac Studio is installed through a USB cable.

Create a project for the NJ-series Controller on the Sysmac Studio, and then create a configuration for the EtherCAT Slave Terminal. Refer to the 9-2-3 Setting the Unit Configuration Informa- tion on page 9-8 for the procedures for creating the Unit configuration information.

Right-click the EtherCAT Coupler Unit in the Edit EtherCAT Slave Terminal Configuration Tab Page, and select Coupler Connection (USB) Unit in the Multiview Explorer and select Coupler Connection (USB)

A confirmation dialog box is displayed.

Click the OK Button.

The Sysmac Studio goes online with the EtherCAT Slave Terminal.

−

Online. Or, right-click the EtherCAT Coupler

−

Online.

2 - 8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 Features and System Configuration

Digital I/O Slave (EtherCAT slave)

Analog I/O Slave (EtherCAT slave)

Scope of access for the Sysmac Studio

NJ-series CPU Unit

Sysmac Studio

Built-in EtherCAT port

EtherCAT Slave Terminal (EtherCAT slave)

EtherCAT Coupler Unit

NX Units

Peripheral USB port

EtherCAT master

2-3-3 Scope of Access When Connected to the USB Port on the Ether-

CAT Coupler Unit

The scope of access from the Sysmac Studio when it is connected to the USB port on the EtherCAT Coupler Unit is limited to the EtherCAT Slave Terminal at the connection. Sysmac Studio cannot access any Units that are not at the connection (such as the NJ-series CPU Unit, other EtherCAT slaves, or other EtherCAT Slave Terminals).

2-3 Support Software

2-3-3 Scope of Access When Connected to the USB Port on the EtherCAT Coupler Unit

NX-series EtherCAT Coupler Unit User’s Manual (W519)

2 - 9

2 Features and System Configuration

2 - 10

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Specifications and Application Procedures

This section provides the general specifications of the EtherCAT Slave Terminal, the specifications of the EtherCAT Coupler Unit and End Cover, and the applications procedures for the EtherCAT Slave Terminal.

3-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-1-1 General Specifications of EtherCAT Slave Terminals . . . . . . . . . . . . . . . . . . . . 3-2

3-1-2 EtherCAT Coupler Unit Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

3-1-3 End Cover Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3-2 Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3-2-1 EtherCAT Slave Terminal Application Procedures . . . . . . . . . . . . . . . . . . . . . . 3-6

3-2-2 Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 1

3 Specifications and Application Procedures

3-1 Specifications

This section provides the general specifications of an EtherCAT Slave Terminal and the specifications of the EtherCAT Coupler Unit and End Cover.

3-1-1 General Specifications of EtherCAT Slave Terminals

Item Specification

Enclosure Mounted in a panel Grounding method Ground to 100  or less.

Ambient operating temperature Ambient operating humidity

Atmosphere Must be free from corrosive gases. Ambient storage

temperature Altitude 2,000 m max. Pollution degree 2 or less: Conforms to JIS B3502 and IEC 61131-2.

Operating environment

Applicable standards

*1. Refer to the NX-series Digital I/O Units User’s Manual (Cat. No. W521) for the vibration and shock resistance

specifications of the Relay Output Unit.

Noise immunity 2 kV on power supply line (Conforms to IEC61000-4-4.) Overvoltage cate-

gory EMC immunity level

Vibration resistance

Shock resistance

0 to 55°C

10% to 95% (with no condensation or icing)

25 to 70°C (with no condensation or icing)

Category II: Conforms to JIS B3502 and IEC 61131-2.

Zone B

Conforms to IEC 60068-2-6.

5 to 8.4 Hz with 3.5-mm amplitude, 8.4 to 150 Hz, acceleration of 9.8 m/s 100 min each in X, Y, and Z directions (10 sweeps of 10 min each = 100 min

total)

Conforms to IEC 60068-2-27. 147 m/s

tions cULus: Listed UL508 and ANSI/ISA 12.12.01

EC: EN 61131-2 and C-Tick

KC: KC Registration

, 3 times each in X, Y, and Z direc-

3-1-2 EtherCAT Coupler Unit Specifications

Item Specification

Model NX-ECC201 Number of connectable NX

Units Communications protocol EtherCAT protocol Modulation Baseband Baud rate 100 Mbps Physical layer 100BASE-TX (IEEE 802.3) Topology Depends on the specifications of the EtherCAT master.

Transmission media

3 - 2

63 Units max.

Category 5 or higher twisted-pair cable (Recommended cable: double-shielded cable with aluminum tape and braiding)

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 Specifications and Application Procedures

Item Specification

Transmission distance Distance between nodes: 100 m or less

Send/receive PDO data sizes

Mailbox data size

Mailbox Emergency messages, SDO requests, and SDO information

Refreshing methods

Node address setting range

I/O jitter performance

Communications cycle in DC Mode

Power supply voltage

NX Unit power supply capacity

Unit power supply

I/O power supply

NX Unit power consumption 1.45 W max. Current consumption from I/O

power supply Dielectric strength 510 VAC for 1 min, leakage current: 5 mA max. (between isolated circuits) Insulation resistance 100 VDC, 20 M min. (between isolated circuits)

External connection terminals

Dimensions 46 × 103 × 71 mm (W×H×D) Weight 150 g max.

NX Unit power supply efficiency

Isolation method No isolation between NX Unit power supply and Unit power supply terminals Current capac-

ity of power supply terminals Power supply voltage

Maximum I/O power supply current

Current capacity of power supply terminals

Input: 1,024 bytes max. (including input data, status, and unused areas)

Output: 1,024 bytes max. (including output data and unused areas) Input: 256 bytes

Output: 256 bytes

• Free-Run refreshing

• Synchronous I/O refreshing

1 to 192 Inputs: 1 μs max.

Outputs: 1 μs max.

250 to 4,000 s

24 VDC (20.4 to 28.8 VDC)

10 W max.

Refer to Installation orientation and restrictions for details. 70%

4 A max.

5 to 24 VDC (4.5 to 28.8 VDC)

4 A

4 A max.

10 mA max. (for 24 VDC)

Communications Connector

For EtherCAT communications.

• RJ45 × 2 (shielded)

• IN: EtherCAT input data, OUT: EtherCAT output data Screwless Clamping Terminal Block

For Unit power supply, I/O power supply, and grounding. Removable. Peripheral USB Port

For Sysmac Studio connection.

• Physical layer: USB 2.0-compliant, B-type connector

• Transmission distance: 5 m max.

*2*3

3-1 Specifications

3-1-2 EtherCAT Coupler Unit Specifications

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 3

3 Specifications and Application Procedures

0 10 20 30 40 45 50 55 60

Ambient temperature [°C]

Output power [W]

10-W output, 40°C

8.5-W output, 55°C

0 10 20 30 40 45 50 55 60

Ambient temperature [°C]

Output power [W]

10-W output, 40°C

6.0-W output, 55°C

NX Unit power supply +

NX Unit power supply −

Terminal block

I/O power supply +

I/O power supply −

DIN Track contact plate

Peripheral USB port

IN communications connector

OUT communications connector

NX bus connector

UV UG

IOV

IOG

UNIT PWR LED

I/O PWR LED

Internal circuits

Non-isolated power supply circuits

Item Specification

Installation orientation: 6 possible orientations

Restrictions:

• Used in the upright installation orientation.

Installation orientation and restrictions

• Used in another orientation other than the upright installation orientation.

Circuit layout

3 - 4

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 Specifications and Application Procedures

Item Specification

Unit power supply

(24 VDC)

Through-wiring

for unwired

terminals.

Terminal arrangement

I/O power supply

(5 to 24 VDC)

Ground to 100 Ω

or less.

Accessory End Cover (NX-END01): 1

*1. This specification applies to a connection to the built-in EtherCAT port on an NJ-series CPU Unit.

*2. This depends on the specifications of the EtherCAT master. The values are as follows when the EtherCAT

Coupler Unit is connected to the built-in EtherCAT port on an NJ5-series CPU Unit: 500 μs, 1,000 μs, 2,000 μs, and 4,000 μs. Refer to the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for the most recent specifications.

*3. This depends on the Unit configuration.

3-1-3 End Cover Specifications

Item Specification

Model NX-END01 Dimensions 12 × 103 × 71 (W×H×D) Weight 35 g max.

IOV

IOG

3-1 Specifications

3-1-3 End Cover Specifications

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 5

3 Specifications and Application Procedures

3-2 Procedures

3-2-1 EtherCAT Slave Terminal Application Procedures

Procedure Sections

• 2-2-2 Types of NX Units on page 2-6

• 3-1 Specifications on page 3-2

• Section 5 Designing the Power

1. Preparing for Work

Supply System

• 6-1-3 Installation Orientation on page 6-8

• 10-3-3 Selecting NX Units on page 10-7

2. Making Hardware Settings and Wiring the Slave Terminal

3. Creating the EtherCAT Network Configuration and Making Settings as an EtherCAT Slave

4. Configuring the Slave Terminal and Making the Operation Settings

• 4-3 Hardware Switch Settings on page 4-9

• 6-1 Installing Units on page 6-2

• Section 7 Wiring

• 9-2-2 Settings as an EtherCAT Slave on page 9-6

• Slave Terminal Configuring and Operation Settings on page 9-5

• 9-2-3 Setting the Unit Configura- tion Information on page 9-8

• 9-2-4 I/O Allocation Information on page 9-13

• 9-2-5 Unit Operation Settings on page 9-23

• 9-2-6 Unit Application Data on page 9-25

3 - 6

5. Setting EtherCAT Master Parameters

NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)

NX-series EtherCAT Coupler Unit User’s Manual (W519)

6. Assigning Slave Terminal Variables

3 Specifications and Application Procedures

• 9-3 Assigning Variables on page

9-29

• 9-3-2 Assigning Device Variables

to I/O Ports on page 9-30

• 9-3-4 Assigning Axis Variables on

page 9-33

7. Programming

8. Turning ON Power and Going Online from the Sysmac Studio

9. Comparing and Merging with the Actual Network Configuration or the Actual Unit Configuration

10. Downloading the Network Configuration Information, the Slave Terminal Setting Information, and the User Program

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

• NJ-series CPU Unit Built-in Ether- CAT Port User’s Manual (W505)

• 10-3-4 I/O Refreshing Method

Operation on page 10-7

• 4-2 Indicators on page 4-5

• Sysmac Studio Version 1 Operation Manual (W504)

• 9-2-7 Sysmac Studio Functions Used as Required on page 9-25

• NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (W505)

9-4 Transferring and Comparing Settings on page 9-34

3-2 Procedures

3-2-1 EtherCAT Slave Terminal Application Procedures

11. Checking Indicators

12. Confirming Operation by Checking the Wiring

4-2 Indicators on page 4-5

Manuals for the specific NX Units

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 7

3 Specifications and Application Procedures

3-2-2 Details

Procedure Item Description Reference

Preparing for Work

Making Hardware Settings and Wiring the Slave Terminal

Creating the EtherCAT Network Configuration and Making Settings as an EtherCAT

Slave

Selecting NX Units

Confirming Suitability of Slave Terminal Specifications

Setting the Node Address

Installation Connect the NX Units and End Cover to the EtherCAT Cou-

Wiring Wire the Slave Terminal.

Creating the EtherCAT Network Configuration and Making Settings as an EtherCAT Slave

• Select the NX Units for I/O refreshing methods, and the quantity and types of I/O that are required.

Confirm that the following specific restrictions for the Slave Terminal are met.

• Number of NX Units

• Send/receive PDO data sizes

• Design conditions for the NX Unit power supply and I/O power supply

• Installation orientation

Set the node address of the EtherCAT Coupler Unit with the hardware switches. You can also use the Sysmac Studio to set the node address with software settings. To use software settings, set the hardware switches to 000, and then mount and wire the EtherCAT Coupler Unit. When you go online in step 3, follow the procedure to automatically create the EtherCAT network configuration from the actual network devices with the compare and merge operation. This sets the node address to the software setting.

pler Unit and secure the Slave Terminal to a DIN Track to install it.

• Connect the communications cables.

• Connect the Unit power supply.

• Connect the I/O power supply.

• Connect the ground wire.

• Connect the external I/O devices.

Create a project in the Sysmac Studio.

Create the EtherCAT network configuration offline.

Specifically, register the EtherCAT Coupler Unit in the network configuration. Then, make the settings for the EtherCAT Coupler Unit as an EtherCAT slave. Set the node address of the EtherCAT Coupler Unit to the node address set in step 2. Set other parameters as required.

If you want to use the compare and merge operation to automatically create the EtherCAT network configuration online based on the actual devices that are connected to the network, you must use step 8 first to go online. After the network configuration is created automatically, go offline and set the other parameters.

• 2-2-2 Types of NX Units on page 2-6

• 10-3-3 Selecting NX Units on page 10-7

• 3-1 Specifica- tions on page 3-2

• Section 5

Designing the Power Supply System

• 6-1-3 Installation Orientation on

page 6-8

4-3 Hardware Switch Settings on

page 4-9

6-1 Installing Units on page 6-2

Section 7 Wiring

9-2-2 Settings as an EtherCAT Slave

on page 9-6

3 - 8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 Specifications and Application Procedures

Procedure Item Description Reference

Configuring the Slave Terminal and Making the Operation Settings

Creating the Unit Configuration Information

Setting EtherCAT Master

Parameters

Assigning Slave Terminal Variables

Programming Programming Write the user program with device variables and axis vari-

Setting the I/O Allocation Information

Unit Operation Settings

Setting Unit Application Data

Setting EtherCAT Master Parameters

Assigning Device Variables to I/O Ports

Assigning Axis Var iables

Task Settings Make the task settings. If you will use synchronous I/O

Set up the Slave Terminal (create the configuration and set the parameters) on the Edit Slave Terminal Configuration Tab Page on the Sysmac Studio.

Create the Unit configuration information of the Slave Terminal (EtherCAT Coupler Unit and NX Units) offline.

Make the I/O allocations for the EtherCAT Coupler Unit and NX Units as required.

Make the Unit operation settings for the EtherCAT Coupler Unit and NX Units as required.

Create the Unit application data. (This step applies only to Units that have Unit application data.)

Set the EtherCAT master parameters (process data communications cycle, wait time for slave startup, etc.). The values that are set are reflected in the network configuration information. To enable access in the user program in the NJ-series CPU Unit, the I/O data that is assigned in the I/O allocation information is assigned to device variables and axis variables.

If necessary, change the names of automatically generated device variables for each I/O port to user-defined variable names.

If you will control Position Interface Units with the Motion Control Function Module, create the axes and assign I/O data to the axis variables.

ables.

refreshing in DC Mode to refresh I/O for EtherCAT Slave Terminals, set the task period of the primary periodic task so that it is longer than the refresh cycle of the NX bus.

Slave Terminal Configuring and Operation Settings on page 9-5

9-2-3 Setting the Unit Configuration Information on

page 9-8

9-2-4 I/O Allocation Information on

page 9-13

9-2-5 Unit Operation Settings on

page 9-23

9-2-6 Unit Application Data on page

9-25

NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (W505) 9-3 Assigning Variables on page 9-29

9-3-2 Assigning Device Variables to I/O Ports on page

9-30

9-3-4 Assigning Axis Variables on

page 9-33

• NJ-series CPU

Unit Software User’s Manual

(W501)

• NJ-series CPU

Unit Built-in EtherCAT Port User’s Manual

(W505)

• NJ-series CPU

Unit Software User’s Manual

(W501)

• 10-3-4 I/O

Refreshing Method Operation on page 10-7

3-2 Procedures

3-2-2 Details

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 9

3 Specifications and Application Procedures

Procedure Item Description Reference

Turning ON Power and Going Online from the Sysmac Studio

Comparing and Merging with the Actual Network Configuration or

the Actual Unit Configuration

Downloading the Network Configuration Information, the Slave Ter-

minal Setting Information, and the User Program

Turning ON the Unit Power Supply to the Slave Terminal

Turning ON the I/O Power Supply to the Slave Terminal Turning ON the Power Supply to the NJ-series Controller

Online connection from Sysmac Studio

Comparing and Merging with the Actual Network Configuration or the Actual Unit Configuration

Downloading the Network Configuration Information, the Slave Terminal Setting Information, and the User Program

Turn ON the Unit power supply to the EtherCAT Coupler Unit and to any Additional NX Unit Power Supply Units that are used. When you do, the Unit configuration information does not exist in the EtherCAT Coupler Unit yet, so the TS indicator on the EtherCAT Coupler Unit will flash green.

Turn ON the I/O power supply to the EtherCAT Coupler Unit and to any Additional I/O Power Supply Units that are used.

Turn ON the power supply to the NJ-series Controller. ---

Use the Sysmac Studio to set communications with the NJ-series Controller and go online.

Use the compare and merge operation for the physical configurations to see if the EtherCAT network configuration and EtherCAT Slave Terminal Unit configuration that are set on the Sysmac Studio agree with the actual configurations.

Download the network configuration information (EtherCAT slave setting information) and the Slave Terminal setting information (Unit configuration information, I/O allocation information, Unit operation settings, and Unit application data). Use the synchronization operation of the Sysmac Studio to download the data.

4-2 Indicators on page 4-5

---

Sysmac Studio Version 1 Operation Manual

(W504)

• 9-2-7 Sysmac

Studio Functions Used as Required on

page 9-25

• NJ-series CPU

Unit Built-in EtherCAT Port User’s Manual

(W505)

9-4 Transferring and Comparing Settings on page

9-34

3 - 10

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 Specifications and Application Procedures

Procedure Item Description Reference

Checking Indicators

Check the indicators on the NJ-series CPU Unit.

EtherCAT Master

• A flashing yellow EtherCAT LINK/ACT indicator shows that data is being transmitted and received after the link is established.

• A solid green EtherCAT NET RUN indicator shows the device is in the operational state (normal communications state).

• If the EtherCAT NET ERR indicator is not lit, there is no error.

4-2 Indicators on page 4-5

3-2 Procedures

Confirming Operation by Checking the Wiring

Check the indicators on the Units in the EtherCAT Slave Terminal.

EtherCAT Coupler Unit

• A solid green TS indicator indicates normal operating status.

• A solid green RUN indicator shows the device is in the operational state (normal communications state).

• A flashing green LINK/ACT indicator shows that data is being transmitted and received after the link is established.

• If the ERR indicator is not lit, there is no error.

NX Units

A solid green TS indicator indicates normal operating status. Use one of the following checking methods for the wiring on

the NX Units to check operation.

• Check the wiring by monitoring inputs or using forced refreshing of outputs from the I/O Map or Watch Tab Page on the Sysmac Studio.

• To use the Motion Control Function Module to control Position Interface Units, use the MC Test Run from the Sysmac Studio or monitor the axis status from the MC monitor table to check the wiring.

3-2-2 Details

Manuals for the specific NX Units

NX-series EtherCAT Coupler Unit User’s Manual (W519)

3 - 11

3 Specifications and Application Procedures

3 - 12

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Part Names and Functions

This section gives the names of the parts of the EtherCAT Coupler Unit, NX Units, and End Cover and describes the functions of the parts.

4-1 Parts and Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-1 EtherCAT Coupler Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4-1-2 NX Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

4-1-3 End Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4-2 Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4-3 Hardware Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4-3-1 Rotary Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4-3-2 DIP Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4-3-3 Setting the Node Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4-4 Communications Connector and Peripheral USB Port . . . . . . . . . . . . . . 4-11

4-5 Terminal Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

4-6 DIN Track Contact Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 1

4 Part Names and Functions

(J)

(G) (H)

(I)

(F)

(L)

(M)

(L)

(K)

(D)

(F)

(E)

(B)

(C)

(A)

4-1 Parts and Names

This section gives the names of the parts of the EtherCAT Coupler Unit, NX Units, and End Plates and describes the functions of the parts.

4-1-1 EtherCAT Coupler Units

This section gives the names of the parts of the EtherCAT Coupler Unit.

4 - 2

Letter Name Function

(A) Marker attachment locations The locations where markers are attached. The markers made by

OMRON are installed for the factory setting. Commercially available markers can also be installed.

For details, refer to 6-1-8 Attaching Markers on page 6-17. (B) Unit specifications The specifications of the Unit are given. (C) NX bus connector This connector is used to connect the EtherCAT Coupler Unit to the

NX Unit on the right of the Coupler Unit. (D) DIN Track mounting hooks These hooks are used to mount the EtherCAT Coupler Unit to a DIN

Track. (E) Protrusions for removing the

Unit

(F) Unit hookup guides These guides are used to connect two Units.

(G) Indicators The indicators show the current operating status of the Unit and the

(H) Peripheral USB port This port is used to connect to the Sysmac Studio.

(I) Terminal block The terminal block is used to connect to the power supply cables and

(J) DIN Track contact plate This plate is connected internally to the functional ground terminal on

(K) DIP switch The DIP switch is used to set the 100s digit of the node address of the

(L) Communications connectors These connectors are connected to the communications cables of the

(M) Rotary switches The rotary switches are used to set the 1s digit and 10s digit of the

The protrusions to hold when removing the Unit.

status of the power supply.

ground wire.

the terminal block.

EtherCAT Coupler Unit as an EtherCAT slave.

EtherCAT network. There are two connectors: one for the input port

and one for the output port.

node address of the EtherCAT Coupler Unit as an EtherCAT slave.

The address is set in decimal.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4-1-2 NX Units

This section provides an example of an NX Unit.

Refer to the user’s manual for each NX Unit for specific information.

4 Part Names and Functions

(C)

(B)

(A)

(H)

Letter Name Function

(A) Marker attachment locations The locations where markers are attached. The markers made by

(B) NX bus connector This connector is used to connect each Unit. (C) Unit hookup guides These guides are used to connect two Units. (D) DIN Track mounting hooks These hooks are used to mount the NX Unit to a DIN Track. (E) Protrusions for removing the

Unit

(F) Indicators The indicators show the current operating status of the Unit.

(G) Terminal block The terminal block is used to connect external devices.

(H) Unit specifications The specifications of the Unit are given.

(C)

(E)

(D)

(F)

(G)

(C)(E)

OMRON are installed for the factory setting. Commercially available markers can also be installed.

The protrusions to hold when removing the Unit.

The number of terminals depends on the type of Unit.

(B)

4-1 Parts and Names

4-1-2 NX Units

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 3

4 Part Names and Functions

Precautions for Correct Use

(B)

(A)

4-1-3 End Cover

An NX-END01 End Cover is connected to the end of the EtherCAT Slave Terminal.

One End Cover is provided together with the EtherCAT Coupler Unit.

Letter Name Function

(A) Unit hookup guides These guides are used to connect the End Cover to the NX Unit on

the left of the End Cover. (B) Protrusions for removing the

Unit

The protrusions to hold when removing the End Cover.

Always mount an End Cover to the end of the EtherCAT Slave Terminal to protect the last NX Unit in the EtherCAT Slave Terminal. Not attaching the End Cover may result in malfunction or failure of the EtherCAT Slave Terminal.

4 - 4

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4-2 Indicators

This section describes the indicators on the EtherCAT Coupler Unit.

TS Indicator

4 Part Names and Functions

4-2 Indicators

The TS indicator shows the status of the EtherCAT Coupler Unit and the communications status between the EtherCAT Coupler Unit and the NX Units.

Color Status Meaning

Green

Red

---

Lit. The Unit is operating normally.

Flashing at 2-s intervals. Flashing at 0.5-s intervals.

Lit. • Hardware failure

Flashing at 1-s intervals.

Not lit. • There is insufficient or no Unit power supply.

• Initializing

• Unit configuration information is not set.

• Non-volatile Memory Checksum Error

• Unit Configuration Error

• Unit Configuration Information Error

• Unit Configuration Verification Error

• ESC Error

• ESC Initialization Error

• Slave Unit Verification Error

• Memory Corruption Detected

• NX Unit Startup Error

• Other error for which the EtherCAT Coupler Unit needs to be replaced.

• NX Unit Communications Timeout

• NX Unit Initialization Error

• Synchronization Interruption Error

• Synchronization Error

• Communications Synchronization Error

• Process Data WDT Error

• Errors related to EtherCAT communications settings

• Illegal State Transition Request Received

• Error State Transition Received

• Synchronization Cycle Setting Error

•Restarting

• Waiting for initialization to start.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 5

4 Part Names and Functions

UNIT PWR Indicator

The UNIT PWR indicator shows the status of the Unit power supply.

Color Status Meaning

Green

---

Lit. Power is currently supplied from the Unit power

Not lit. No power is currently supplied.

I/O PWR Indicator

The I/O PWR indicator shows the status of the I/O power supply.

Color Status Meaning

Green

---

Lit. Power is currently supplied from the I/O power sup-

Not lit. No power is currently supplied.

supply.

ply.

L/A IN Indicator

The L/A IN indicator shows the status of the inputs in EtherCAT communications.

Color Status Meaning

Green

---

Lit. A link was established in the physical layer.

Flickering A link was established and input communications

are in operation.

Not lit. A link was not established in the physical layer.

L/A OUT Indicator

The L/A OUT indicator shows the status of the outputs in EtherCAT communications.

Color Status Meaning

Green

---

Lit. A link was established in the physical layer.

Flickering A link was established and output communications

are in operation.

Not lit. A link was not established in the physical layer.

4 - 6

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 Part Names and Functions

RUN Indicator

The RUN indicator shows the operating status of EtherCAT communications for the EtherCAT Coupler Unit.

Color Status Meaning

Green

---

Lit. Operational state

Blinking Pre-Operational state Single flash Safe-Operational state

Not lit. Init state

For details on EtherCAT states, refer to 8-3 Transitions of Communications States on page 8-4.

ERR Indicator

4-2 Indicators

The ERR indicator provides information on errors in the EtherCAT Coupler Unit.

Color Status Meaning

Red

---

Lit. • Hardware failure

• ESC Initialization Error

• Other error for which the EtherCAT Coupler Unit needs to be replaced.

Flickering ESC Error Blinking • NX Unit Initialization Error

• Non-volatile Memory Checksum Error

• Unit Configuration Error

• Unit Configuration Information Error

• Unit Configuration Verification Error

• Slave Unit Verification Error

• NX Unit Communications Timeout

• Memory Corruption Detected

• Errors related to EtherCAT communications settings

• Illegal State Transition Request Received

• Error State Transition Received

• Synchronization Cycle Setting Error

• NX Unit Startup Error

Single flash • Synchronization Interruption Error

• Synchronization Error

• Communications Synchronization Error

•Restarting

• In parameter overwrite mode

Double flash Process Data WDT Error Not lit. No error

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 7

4 Part Names and Functions

Additional Information

off

Flickering

Blinking

Single flash

Double flash

200 ms 200 ms

50 ms

1,000 ms

200 ms

200 ms 200 ms

The timing of flashing and flickering of the indicators is shown below.

4 - 8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 Part Names and Functions

4-3 Hardware Switch Settings

This section describes the functions of the hardware switches (i.e., the rotary switches and the DIP switch) on the front panel of the EtherCAT Coupler Unit.

4-3-1 Rotary Switches

The rotary switches are used to set the node address of the EtherCAT Slave Terminal on the EtherCAT network. They set the node address as the 10s digit and 1s digit of the decimal value. The 100s digit is set on pin 4 of the DIP switch that is described below.

The setting range is from 00 to 99. (The factory setting is 00.)

Refer to 4-3-3 Setting the Node Address on page 4-10 for information on setting the node address by combining the rotary switches and pin 4 of the DIP switch that is described below.

4-3-2 DIP Switch

If you turn ON pin 4 on the DIP switch, 100 will be added to the node address that is set on the rotary switches.

4-3 Hardware Switch Settings

4-3-1 Rotary Switches

The other pins are reserved by the system.

Pin Name Meaning

Pin 1 Reserved by the system. Keep turned OFF. Pin 2 Pin 3 Pin 4 Node address + 100 ON:

Refer to 4-3-3 Setting the Node Address on page 4-10 for information on setting the node address by combining the rotary switches that are described above and pin 4 of the DIP switch.

(The factory setting is OFF.)

The address that is set on the rotary switches is increased by 100.

OFF:

The address that is set on the rotary switches is not increased by 100.

(The factory setting is OFF.)

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 9

4 Part Names and Functions

Precautions for Correct Use

4-3-3 Setting the Node Address

You must set the node address to enable the EtherCAT master to recognize the EtherCAT Slave Terminal.

There are two ways to set the node address: Switch settings and settings from the Sysmac Studio.

The switch settings are used to select the method to use.

Setting the Node Address with Switch Settings

The following switches are used to set the node address. The setting range is from 001 to 192.

If these switches are used, the node address that is set on the switches will be valid. (The factory setting is 000.)

Switch Node address Node address setting

DIP switch pin 4 100s digit 001 to 192 Top rotary switch 10s digit Bottom rotary switch 1s digit

You can set any node address that is within the setting range as long as the same node address is not set for another EtherCAT slave on the EtherCAT network.

Setting the Node Address from the Sysmac Studio

To set the node address from the Sysmac Studio, set the switches to 000, as shown below.

This will enable setting the node address from the Sysmac Studio.

Switch Node address Node address setting

DIP switch pin 4 100s digit 0 (OFF) Top rotary switch 10s digit 0 Bottom rotary switch 1s digit 0

Refer to 9-2-2 Settings as an EtherCAT Slave on page 9-6 for the procedure to set the node address from the Sysmac Studio.

• The node address that is set on the switches is read only once when the Unit power supply is turned ON or the EtherCAT Coupler Unit is restarted. Even if the node address is changed after the Unit power supply is turned ON or after the EtherCAT Coupler Unit is restarted, the new node address will not be used until the next time that power is turned ON or the EtherCAT Coupler Unit is restarted.

• An error will occur if the same node address is set for more than one slave.

• An error will occur if the node address is not within the setting range.

4 - 10

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 Part Names and Functions

Top: IN connector

Bottom: OUT connector

Peripheral USB port

Communications connectors

4-4 Communications Connector and Periph-

eral USB Port

This section provides the specifications of the communications connectors and peripheral USB port on the front panel of the EtherCAT Coupler Unit.

4-4 Communications Connector and Peripheral USB Port

Communications Connectors

Connect Ethernet cables to the communications connectors. The specifications of the EtherCAT communications connectors are given below.

• Electrical specifications: Conform to IEEE 802.3 standards.

• Connector structure: RJ45 8-pin Modular Connector (Conforms to ISO 8877.)

Peripheral USB Port

The peripheral USB port is used to connect to Support Software. You can use a USB cable to directly connect the EtherCAT Coupler Unit to the Sysmac Studio to enable setting up the EtherCAT Slave Terminal.

• Connector type: B

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 11

4 Part Names and Functions

Additional Information

8-terminal type

(A)

(B)

(C)

4-5 Terminal Block

The terminal block on the EtherCAT Coupler Unit is a removable screwless clamping terminal block that allows you to easily connect and remove the wiring.

The Unit power supply, I/O power supply, and ground wire are connected to this screwless clamping terminal block.

For details, refer to 7-2 Connecting the Power Supply and Ground Wires on page 7-8.

Terminal blocks come in three types depending on the number of terminals that can be used. There are 8-terminal type, 12-terminal type, and 16-terminal type.

Only an 8-terminal terminal block can be mounted to the EtherCAT Coupler Unit.

To prevent incorrect wire insertion, other terminal blocks cannot be mounted.

Letter Name Function

(A) Terminal num-

ber indications

The terminal numbers (A1 to A8 and B1 to B8) are displayed.

The terminal number indications are the same regardless of the number of termi-

nals on the terminal block. (B) Release holes Insert a flat-blade screwdriver into these holes to connect and remove the wires. (C) Terminal holes The wires are inserted into these holes.

On 8-terminal type of terminal blocks, the following terminals do not have terminal holes and release holes: A2, A4, A6, A8, B2, B4, B6, and B8.

4 - 12

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4-6 DIN Track Contact Plate

DIN Track contact plate

There is a DIN Track contact plate in the section on the back of the EtherCAT Coupler Unit that comes into contact with the DIN Track.

This plate is connected internally to the functional ground terminal on EtherCAT Coupler Unit. This means that the functional ground terminal will be electrically connected to the DIN Track.

For details, refer to 7-2-3 Grounding the EtherCAT Slave Terminal on page 7-9.

Unit side

4 Part Names and Functions

4-6 DIN Track Contact Plate

Functional ground terminal

DIN Track

contact plate

Connected inside the Unit.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

4 - 13

4 Part Names and Functions

4 - 14

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Designing the Power Supply System

This section describes how to design the power supply system for the EtherCAT Slave Terminal.

5-1 Power Supply System and Design Concepts . . . . . . . . . . . . . . . . . . . . . . . 5-2

5-1-1 Power Supply System and Types of Power Supplies . . . . . . . . . . . . . . . . . . . . 5-2

5-1-2 NX-series Power Supply-related Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

5-1-3 Design Concepts for Power Supply to the EtherCAT Slave Terminal . . . . . . . . 5-5

5-2 Designing the NX Unit Power Supply System . . . . . . . . . . . . . . . . . . . . . . . 5-6

5-2-1 Procedure for Designing the NX Unit Power Supply System . . . . . . . . . . . . . . 5-6

5-2-2 Calculation Example for the NX Unit Power Supply . . . . . . . . . . . . . . . . . . . . . 5-7

5-3 Designing the I/O Power Supply System . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5-3-1 I/O Power Supply Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

5-3-2 Designing the I/O Power Supply from the NX Bus . . . . . . . . . . . . . . . . . . . . . 5-10

5-3-3 Designing the I/O Power Supply from External Sources . . . . . . . . . . . . . . . . 5-14

5-4 Selecting External Power Supplies and Protective Devices . . . . . . . . . . 5-15

5-4-1 Selecting the Unit Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

5-4-2 Selecting the I/O Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

5-4-3 Selecting Protective Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 1

5 Designing the Power Supply System

NX bus

End Cover

NX Units

NX bus connector

NX Unit power supply

EtherCAT Coupler Unit

Unit power supply terminals

I/O power supply terminals

Terminal blocks

Input terminals or I/O power supply terminals (example for Digital Input Unit)

To external devices

Internal circuits

Unit power

supply

(24 VDC)

I/O power

supply

(e.g., 24 VDC)

Internal power supply circuit

5-1 Power Supply System and Design

Concepts

This section describes the power supply system for an EtherCAT Slave Terminal and the design concepts.

5-1-1 Power Supply System and Types of Power Supplies

Power Supply System Configuration Diagram

An example of a power supply system configuration diagram for an EtherCAT Slave Terminal is shown below.

5 - 2

Power Supply Types

There are the following two types of power supplies that supply power to the EtherCAT Slave Terminal.

Power supply

type

Unit power supply

This power supply is required to generate the NX Unit power, which is necessary for the EtherCAT Slave Terminal to operate.

This power supply is connected to the Unit power supply terminals on the EtherCAT Coupler Unit.

The internal power supply circuit in the EtherCAT Coupler Unit generates the NX Unit power supply from the Unit power supply.

The internal circuits of the EtherCAT Coupler Unit and of the NX Units operate on the NX Unit power supply.

The NX Unit power is supplied to the NX Units in the Slave Terminal through the NX bus connectors.

Description

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

Precautions for Correct Use

EtherCAT Coupler Unit

Unit power supply terminals

NX Unit

I/O power

supply

Unit power

supply

NX Unit power supply

Additional NX Unit Power Supply Unit

NX Unit power supply

Separated by Additional NX Unit Power Supply Unit

The total power consumption from the NX Unit power supply is within the NX Unit power supply capacity.

Internal

power supply

circuit

Internal

power supply

circuit

Power supply

type

Description

I/O power supply This power supply drives the internal I/O circuits of the NX Units and it is used for the con-

nected external devices. This power supply is connected to the I/O power supply terminals on the EtherCAT Coupler Unit. The I/O power is supplied to the NX Units from the I/O power supply terminals and through the NX bus connectors.

Always use separate power supplies for the Unit power supply and the I/O power supply. If you supply power from the same power supply, noise may cause malfunctions.

5-1-2 NX-series Power Supply-related Units

The EtherCAT Coupler Unit supplies the NX Unit power and I/O power to the NX Units in the Slave Terminal. The Units that are related to power supply for the NX Series other than the EtherCAT Coupler Unit are listed in the following table.

For the specifications of NX-series power supply-related Units, refer to the NX-series System Units User’s Manual (Cat. No. W523). For information on the most recent lineup of NX Series power supply-related Units, refer to NX-series catalogs or OMRON websites, or ask your OMRON representative.

5-1 Power Supply System and Design Concepts

Unit name Function

Additional NX Unit Power Supply Unit

This NX Unit provides NX Unit power supply.

This NX Unit is used when the total power consumption of the NX Units in the Slave Terminal exceeds the NX Unit power supply capacity of the EtherCAT Coupler Unit.

The I/O power supply for the Additional NX Unit Power Supply Unit is connected to the NX Unit on the left through the NX bus connector.

5-1-2 NX-series Power Supply-related Units

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 3

5 Designing the Power Supply System

Unit name Function

Additional I/O Power Supply Unit

This NX Unit provides additional I/O power supply.

Use this NX Unit in the following cases.

(a) When the I/O power supply capacity is insufficient

• When the total current consumption for the I/O power supply exceeds the maximum I/O power supply current of the EtherCAT Coupler Unit

• When a voltage drop in the I/O power supply causes the voltage of the I/O

power supply to go below the voltage specifications of the I/O circuits or connected external devices

(b) Separating the I/O power supply

• When connected external devices have different I/O power supply voltages

• When separating the power supply systems

Case (a)

EtherCAT Coupler Unit

Separated by Additional I/O Power Supply Unit

NX Unit

Additional I/O Power Supply Unit

Unit power

supply

Case (b)

EtherCAT Coupler Unit

I/O power

supply

Internal

power supply

circuit

Separated by Additional I/O Power Supply Unit

NX Unit

Internal power supply

circuit

I/O power

supply

When the I/O power supply becomes the following states for the subsequent NX Units.

- When it exceeds the maximum I/O power supply current

- When it goes below the voltage specifications of the connected external devices

Additional I/O Power Supply Unit

5 - 4

I/O power

supply

Unit power

supply

I/O power

supply

- When different I/O power supply voltage are used.

- When separating the power supply systems.

The NX Unit power supply of the Additional I/O Power Supply Unit is connected to the NX Unit on the left through the NX bus connector.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

Unit name Function

I/O Power Supply Connection Unit

5 Designing the Power Supply System

This NX Unit is used when there are not enough I/O power supply terminals for the connected external devices that are connected to NX Units such as Digital I/O Units and Analog I/O Units.

I/O power supply is not separated at the I/O Power Supply Connection Units.

EtherCAT Coupler Unit

I/O power

supply

NX Unit

Internal

power supply

circuit

Additional I/O Power Supply Unit

I/O Power Supply Connection Units

5-1 Power Supply System and Design Concepts

Unit power

supply

I/O power

supply

Not enough I/O power supply terminals

Example of NPN type

I/O Power Supply

Connection Unit

(16 IOV terminals)

IOV

I/O Power Supply

Connection Unit

(16 IOG terminals)

IOG IOG

IOG

IOG IOG

IOG

DC Input Units

(NPN type)

1 3

Two-wire sensor*

(e.g., limit switch)

Brown (White) Blue (Black)

Three-wire sensor

with NPN output*

(e.g., photoelectric sensor

or proximity sensor)

Black (White) Brown (Red) Blue (Black)

* Wire colors have been changed according to revisions in the JIS standards for photoelectric and proximity sensors. The colors in parentheses are the wire colors prior to the revisions.

5-1-3 Design Concepts for Power Supply to the EtherCAT Slave Termi-

nal

5-1-3 Design Concepts for Power Supply to the EtherCAT Slave Terminal

The following must be studied when designing the power supply system to the EtherCAT Slave Terminal.

• The NX Unit power supply and I/O power supply systems must be designed and then the design conditions for both must be confirmed.

• The external power supplies (i.e., Unit power supply and I/O power supplies) must be selected.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 5

5 Designing the Power Supply System

Unit power

supply

Internal power supply circuits

Additional NX Unit Power Supply Unit

Unit power supply terminals

End Cover

NX Unit power supply

The total power consumption from the NX Unit power supply must not exceed the NX Unit power supply capacity.

NX Units connected to the EtherCAT Coupler Unit

NX Units connected to the Additional NX Unit Power Supply Unit

NX Unit power supply

Unit power supply terminals

EtherCAT Coupler Unit

5-2 Designing the NX Unit Power Supply

System

This section describes how to design the NX Unit power supply to the EtherCAT Slave Terminal.

5-2-1 Procedure for Designing the NX Unit Power Supply System

The total power consumption from the NX Unit power supply must not exceed the NX Unit power supply capacity of the Unit that supplies the NX Unit power.

Use the following procedure to design the NX Unit power supply.

Calculate the total power consumption from the NX Unit power supply that is required by the NX Units that are connected to the EtherCAT Coupler Unit.

If the total power consumption from the NX Unit power supply exceeds the NX Unit power supply capacity of the EtherCAT Coupler Unit, add an Additional NX Unit Power Supply Unit to the right of an NX Unit before the capacity is exceeded.

Calculate the total power consumption from the NX Unit power supply that is required by the NX Units that are connected after the Additional NX Unit Power Supply Unit. If the total power consumption of those NX Units exceeds the NX Unit power supply capacity of the Additional NX Unit Power Supply Unit, add another Additional NX Unit Power Supply Unit to the right of an NX Unit before the capacity is exceeded.

Repeat step 3 until the design conditions for the NX Unit power supply are met.

5 - 6

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

Precautions for Correct Use

 NX Unit Power Supply Capacity and Restrictions

The internal power supply circuits of the EtherCAT Coupler Unit or Additional NX Unit Power Supply Unit supply the NX Unit power to the NX Units.

The NX Unit power supply capacity does not include the NX Unit power consumption of the EtherCAT Coupler Unit or Additional NX Unit Power Supply Units.

The NX Unit power supply capacity of the EtherCAT Coupler Unit is restricted by the following application conditions.

• Ambient operating temperature

• Installation orientation

Consider these conditions and determine the required NX Unit power supply capacity, and then design the NX Unit power supply system.

Refer to 3-1-2 EtherCAT Coupler Unit Specifications on page 3-2 for restrictions on the EtherCAT Cou- pler Unit.

For restrictions on the Additional NX Unit Power Supply Unit, refer to the NX-series System Units User’s Manual (Cat. No. W523).

5-2 Designing the NX Unit Power Supply System

• Do not exceed the NX Unit power supply capacity. If you exceed the NX Unit power supply capacity, malfunction may occur.

• Use the same Unit power supply to supply the Unit power to the entire Slave Terminal. If you supply power from different Unit power supplies, differences in electrical potential may cause unexpected currents in the NX Unit power supply, which may result in failure or malfunction.

5-2-2 Calculation Example for the NX Unit Power Supply

This section provides a calculation example for the NX Unit power supply.

 Unit Configuration Example

Name Model Quantity Power consumption/Unit

EtherCAT Coupler Unit NX-ECC201 1 1.45 W Digital Input Unit NX-ID3317 5 0.5 W Relay Output Unit NX-OC2633 5 0.8 W

 Application Conditions

The ambient operating temperature is 55°C and an upright installation orientation is used.

 Calculating the Total Power Consumption from the NX Unit Power Supply

5-2-2 Calculation Example for the NX Unit Power Supply

Calculate the total power consumption from the NX Unit power supply that is required by the NX Units that are connected to the EtherCAT Coupler Unit. The NX Unit power consumption of the EtherCAT Coupler Unit is not included in this calculation.

Total power consumption from NX Unit power supply [W] = (0.5 W × 5) + (0.8 W × 5) = 6.5 W

 Confirming the NX Unit Power Supply Capacity of the EtherCAT Coupler Unit

According to the graph in Installation orientation and restrictions on page 3-4 in 3-1-2 EtherCAT Coupler Unit Specifications on page 3-2, the NX Unit power supply capacity is 8.5 W max. There-

fore, in this example, the total power consumption from the NX Unit power supply is 6.5 W, and the NX Unit power supply capacity is 8.5 W max., so the design conditions are met.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 7

5 Designing the Power Supply System

Additional Information

Excess or insufficiency in the NX Unit power supply capacity can be easily checked when the Unit configuration is created on the Edit Slave Terminal Configuration Tab Page on the Sysmac Studio. Use the following procedure to check the power supply capacity.

On the Edit Slave Terminal Configuration Tab Page on the Sysmac Studio, select the Unit to supply NX Unit power. The power that is supplied by the NX Unit power supply (i.e., the total power consumption) and the power supply capacity are displayed for the Supply Power/Available Power parameter. The following example is for when the EtherCAT Coupler Unit is selected.

If the power to supply exceeds the NX Unit power supply capacity of the Unit that is selected to supply the NX Unit power, a yellow warning icon is displayed by the first NX Unit for which there is not sufficient capacity and also by all the remaining NX Units.

However, the Sysmac Studio determines excess and insufficiency in the supplied power for an NX Unit power supply capacity of 10 W max. It does not consider the power supply restrictions of the NX Unit power supply in actual application conditions and I/O power supply design conditions. When actually designing the power supply, refer to 5-2-1 Procedure for Designing the NX

Unit Power Supply System on page 5-6 and 5-3-2 Designing the I/O Power Supply from the NX Bus on page 5-10.

5 - 8

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

External output device

Terminal block

Supplied from external source.

I/O power supply (AC)

External output device

External input device

Terminal block

I/O power

supply

(DC)

I/O power supply terminals

EtherCAT

Coupler Unit

Supplied from the NX bus.

DC Input

Unit

Relay

Output

Unit

Relay

Output

Unit

Transistor

Output Unit

End Cover

5-3 Designing the I/O Power Supply Sys-

tem

This section describes how to design the I/O power supply to the EtherCAT Slave Terminal.

5-3-1 I/O Power Supply Method

There are the following two methods to supply the I/O power supply to the EtherCAT Slave Terminal depending on the type and model of the NX Units.

Supply method Description

Supply from the NX bus Power is supplied through the NX bus connectors by connecting an I/O power supply

to the I/O power supply terminals on the EtherCAT Coupler Unit or Additional I/O Power Supply Units.

Supply from external source

Refer to the user’s manuals for individual NX Units or to the NX-series Data Reference Manual (Cat. No. W525) for the power supply method for specific NX Units.

An example is shown below.

Power is supplied to the Units from an external source.

I/O power is supplied by connecting an I/O power supply to the terminal blocks on the Units.

5-3 Designing the I/O Power Supply System

5-3-1 I/O Power Supply Method

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 9

5 Designing the Power Supply System

5-3-2 Designing the I/O Power Supply from the NX Bus

Procedure for Designing the I/O Power Supply

Make sure that the following design conditions are met when you design the I/O power supply from the NX bus.

• The total current consumption from the I/O power supply must not exceed the maximum I/O power supply current of the Unit that supplies the I/O power.

• The voltage drop in the I/O power supply must be within the voltage specifications of the I/O circuits of the NX Units and the connected external devices.

Use the following procedure to design the I/O power supply.

Calculate the total current consumption from the I/O power supply of the EtherCAT Coupler Unit and the NX Units that are connected to the EtherCAT Coupler Unit, and calculate the voltage drop in the I/O power supply.

If either of the following items (a) and (b) is true, add an Additional I/O Power Supply Unit to the right of an NX Unit for which (a) and (b) are not true.

(a) The total current consumption for the I/O power supply exceeds the I/O power supply

capacity of the EtherCAT Coupler Unit.

(b) Voltage drop in the I/O power supply causes the voltage of the I/O power supply to go

below the voltage specifications of the I/O circuits of the NX Units or the connected external devices.

Calculate the voltage drop in the I/O power supply after the Additional I/O Power Supply Unit and the total current consumption from the I/O power supply that is required by the Additional I/O Power Supply Unit and by the NX Units that are connected after the Additional I/O Power Supply Unit. If either of the following items (a) and (b) is true, add another Additional I/O Power Supply Unit to the right of an NX Unit for which (a) and (b) are not true.

(a) The total current consumption for the I/O power supply exceeds the I/O power supply

capacity of the Additional I/O Power Supply Unit.

(b) Voltage drop in the I/O power supply causes the voltage of the I/O power supply to go

below the voltage specifications of the I/O circuits of the NX Units or the connected external devices.

Repeat step 3 until the design conditions for the I/O power supply are met.

5 - 10

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

●The total current consumption from the I/O power supply must not exceed the maximum current of the I/O power supply. (NX Units that are supplied power from external sources are not included in the calculation.)

●The voltage drop in the I/O power supply must be within the voltage specifications of the I/O circuits of the NX Units and the connected external devices.

NX Units

●The total current consumption from the I/O power supply must not exceed the maximum current of the I/O power supply.

●The voltage drop in the I/O power supply must be within the voltage specifications of the I/O circuits of the NX Units and the connected external devices.

●The total current consumption from the I/O power supply must not exceed the maximum current of the I/O power supply.

●The voltage drop in the I/O power supply must be within the voltage specifications of the I/O circuits of the NX Units and the connected external devices.

Additional I/O Power Supply Unit

NX Units

Additional I/O Power Supply Unit

NX Units

End Cover

To external

devices

To external

devices

To external

devices

To external

devices

I/O power

supply

Separating the I/O Power Supply

• The Additional I/O

Power Supply Unit is used because different I/O power supply voltages are used.

The Additional I/O Power Supply Unit is used because otherwise the maximum current of the I/O power supply would be exceeded.

I/O power

supply

I/O power

supply

terminals

I/O power

supply

terminals

I/O power supply

I/O

power

supply

Supplied from external source.

I/O power

supply

I/O power supply

terminals

EtherCAT

Coupler Unit

5-3 Designing the I/O Power Supply System

5-3-2 Designing the I/O Power Supply from the NX Bus

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 11

5 Designing the Power Supply System

 Maximum I/O Power Supply Current

The maximum I/O power supply current is the maximum current that the I/O power supply that is connected to the EtherCAT Coupler Unit or Additional I/O Power Supply Unit can supply through the NX bus connectors to the NX Units. For the maximum I/O power supply current of the EtherCAT Coupler Unit, refer to 3-1-2 EtherCAT Coupler Unit Specifications on page 3-2. For the maximum I/O power supply current of the Additional I/O Power Supply Unit, refer to the NX-series System Units User’s Manual (Cat. No. W523).

Calculating the Total Current Consumption from the I/O Power Supply

The total current consumption from the I/O power supply from the NX bus is the total of the following current consumptions.

• The current consumption from the I/O power supply that is required for the EtherCAT Coupler Unit or the Additional I/O Power Supply Unit, and for the NX Units that are connected to the EtherCAT Coupler Unit or Additional I/O Power Supply Unit

• The current consumption between the NX Units and the connected external devices

Current consumption item Description

Current consumption from I/O power supply

Current consumption between the NX Units and the connected external devices

This is the current that is consumed by the internal circuits that operate on the I/O power supply.

Specific values are given in the user’s manuals for individual Units. This is the current that is consumed between the NX Units and the con-

nected external devices.

For example, this is the current consumed by a Digital Input Unit to supply power to photoelectric sensors or to turn ON the input circuits in the Digital Input Unit.

The current consumption depends on the type of I/O circuit in the NX Unit, the number of I/O points that are used, and the current consumption of the connected external device. It must be calculated for each NX Unit.

 Calculation Examples

Examples of calculating the current consumption from the I/O power supply are given below for a Digital Input Unit and Digital Output Unit.

Current consumption of Digital Input Unit

Current consumption of Digital Output Unit

Current consumption from I/O power supply + (Input current × Number

of inputs used) + Total current consumption of connected input devices

Current consumption from I/O power supply + Total load current of con-

nected loads + Total current consumption of connected output devices

5 - 12

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

Example:

(1) (2) (2) (4) (5) (6) (7)

To external

devices

To external

devices

I/O power

supply

(24 VDC)

Power Consumption of Individual Units (1): 0 A

(Supplied from the NX bus.) (2) and (3): 1.5 A each (Supplied from the NX bus.) (4) and (5): 0 A (Supplied from external source.) (6) and (7): 0.5 A each (Supplied from the NX bus.)

● Total current consumption from the Units that are supplied I/O power from the EtherCAT Coupler Unit (total for (1) to (7) = 4 A)

● Units that are supplied I/O power from the Additional I/O Power Supply Unit

Additional I/O Power Supply Unit

EtherCAT Coupler Unit

NX Units

End Cover

To external

devices

I/O power

supply

(24 VDC)

Calculating the Voltage Drop in the I/O Power Supply

Voltage drop occurs in the EtherCAT Slave Terminal due to the contact resistance at the points where Units are connected to each other. Design the I/O power supply system to maintain the voltage specifications of the NX Unit I/O circuits and connected external devices even if the voltage of the I/O power supply drops.

As shown in the following table, the voltage drop per Unit depends on the total current consumption from the I/O power supply.

5-3 Designing the I/O Power Supply System

Total current consumption from the I/O

power supply

Voltage drop per Unit

4 A 0.08 V 3 A 0.06 V 2 A 0.04 V 1 A 0.02 V

Here, the following Unit configuration example is used to show how to calculate the I/O power that is supplied by the EtherCAT Coupler Unit. The same method can be used to calculate the I/O power supply from an Additional I/O Power Supply Unit.

5-3-2 Designing the I/O Power Supply from the NX Bus

*1. The current consumption of the EtherCAT Coupler Unit is not actually 0 A. However, a value of 0 A is used in

this calculation example. In actual calculations, use the current consumption from the I/O power supply that is given elsewhere in this manual.

 Outline

Find the I/O power supply voltage of the NX Unit that is the farthest from the EtherCAT Coupler Unit. In this example, the I/O power supply voltage of Unit (7) is found.

 Conditions

Assume that an I/O power supply voltage of 24.00 VDC is supplied to the I/O power supply terminals on the EtherCAT Coupler Unit.

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 - 13

5 Designing the Power Supply System

 Procedure

Use the following formula to calculate the total current consumption from the I/O power supply.

Total current consumption from the I/O power supply

Find the I/O power supply voltage and make sure that it is within the voltage specifications of the I/O circuits of the NX Units and the connected external devices.

I/O power supply voltage at (7) = I/O power supply voltage on I/O power supply terminals  (Voltage drop per Unit ×

Number of Units passed through)

= 24.00 V  0.08 V × (7  1 Units)

= 23.52 V

=(1) + (2) + (3) + (4) + (5) + (6) + (7) = 0 A + 1.5 A + 1.5 A + 0 A + 0 A + 0.5 A + 0.5 A = 4 A

Design to Separate the I/O Power Supply

If the I/O power supply voltages of the connected external devices are different, connect an Additional I/O Power Supply Unit at the point where the I/O power supply voltage changes and then perform similar calculations to design a system that meets the power supply conditions. The same method is used to separate the power supply systems. Connect an Additional I/O Power Supply Unit at the point where the power supply systems are to be separated and then perform similar calculations to design the overall system to meet the power supply conditions.

5-3-3 Designing the I/O Power Supply from External Sources

Unlike supplying power from the NX bus, there is no specific design method for supplying I/O power from external sources.

Calculate the total current consumption from the I/O power supply for the NX Units to be supplied power from an external source.

Refer to the user’s manuals of the NX Units for the total current consumption from the I/O power supply.

5 - 14

NX-series EtherCAT Coupler Unit User’s Manual (W519)

5 Designing the Power Supply System

5-4 Selecting External Power Supplies

and Protective Devices

This section describes how to select the external power supplies and protective devices for the EtherCAT Slave Terminal, i.e., the Unit power supply and the I/O power supplies.

5-4-1 Selecting the Unit Power Supply

This section describes how to select the Unit power supply for the EtherCAT Slave Terminal.

Recommended Power Supplies

Use an SELV power supply that meets the following conditions for the Unit power supply.

• Has overcurrent protection.

• Has double or reinforced insulation between the input and output.

• Has an output voltage of 24 VDC (20.4 to 28.8 VDC).

Recommended Power Supplies: S8JX Series (manufactured by OMRON)

5-4 Selecting External Power Supplies and Protective Devices

Calculating the Required Power Supply Capacity of the Unit Power Supply

 Formula

This section describes how to calculate the required capacity of the Unit power supply for the EtherCAT Slave Terminal.

Required capacity of the Unit power supply for the EtherCAT Slave Terminal

Use the following formula to calculate the required Unit power supply capacity for each block in the EtherCAT Slave Terminal.

Required Unit power supply capacity of each block = (A + B)/C

A: NX Unit power consumption of the Unit that supplies the NX Unit power

B: Total NX Unit power consumption of the NX Units that are connected to the Unit that supplies the NX Unit power

C: NX Unit power supply efficiency of the Unit that supplies the NX Unit power

 Blocks

A block consists of the Unit that supplies the NX Unit power and the range of Units to which that Unit supplies the NX Unit power. For example, in the configuration in the following figure there are two blocks in the EtherCAT Slave Terminal: the block with the EtherCAT Coupler Unit and the block with the Additional NX Unit Power Supply Unit.

Total of required Unit power supply capacity

for each block

5-4-1 Selecting the Unit Power Supply

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5 Designing the Power Supply System

Precautions for Correct Use

  

Unit power supply

Unit power supply terminals

Additional NX Unit Power Supply Unit

Internal power supply circuits

Unit power supply terminals

EtherCAT Coupler Unit block

Additional NX Unit Power Supply Unit block

NX Units connected to the EtherCAT Coupler Unit

NX Units connected to the Additional NX Unit Power Supply Unit

NX Unit power supply

EtherCAT Coupler Unit

NX Unit power supply

End Cover

The total of the required Unit power supply capacity for these two blocks is the required power supply capacity of the Unit power supply for the EtherCAT Slave Terminal.

Use the same Unit power supply to supply the Unit power to the entire Slave Terminal. If you supply power from different Unit power supplies, differences in electrical potential may cause unexpected currents in the NX Unit power supply, which may result in failure or malfunction.

 Calculation Example

This section provides a calculation example for the configuration example that is given in 5-2-2 Calculation Example for the NX Unit Power Supply on page 5-7.

Name Model Quantity Power consumption/Unit

EtherCAT Coupler Unit NX-ECC201 1 1.45 W Digital Input Unit NX-ID3317 5 0.5 W Relay Output Unit NX-OC2633 5 0.8 W

• The NX Unit power supply efficiency of the EtherCAT Coupler Unit is 70%.

In this configuration example, there is only one block, the EtherCAT Coupler Unit block.

Required power supply capacity of Unit power supply to EtherCAT Slave Terminal

= Required Unit power supply capacity of EtherCAT Coupler Unit block

= (Power consumption from NX Unit power supply of EtherCAT Coupler Unit + Total power con-

sumption from NX Unit power supply of NX Units connected to EtherCAT Coupler Unit)/NX Unit power supply efficiency of EtherCAT Coupler Unit

= (1.45 W + (0.5 W × 5) + (0.8 W × 5))/0.7

= Approx. 11.4 W

Consider the inrush current when the power supply is turned ON and select a Unit power supply with sufficient extra capacity. The inrush current when power is turned ON may prevent the Unit power supply from operating correctly.

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5 Designing the Power Supply System

Precautions for Correct Use

5-4-2 Selecting the I/O Power Supplies

This section describes how to select the I/O power supplies for the EtherCAT Slave Terminal.

Recommended Power Supplies

Use an SELV power supply that meets the following conditions for the I/O power supply.

• Has overcurrent protection.

• Has double or reinforced insulation between the input and output.

• Has an output voltage of 5 to 24 VDC (4.5 to 28.8 VDC).

*1. Use an output voltage that is appropriate for the I/O circuits of the NX Units and the connected external

devices.

Recommended Power Supplies: S8JX Series (manufactured by OMRON)

Calculating the Required Power Supply Capacity of the I/O Power Supply

Use the calculation method that is described in 5-3 Designing the I/O Power Supply System on page 5-9 and calculate the total current consumption from the I/O power supply and the required power supply capacity of the I/O power supply.

5-4 Selecting External Power Supplies and Protective Devices

Unlike the Unit power supply, it is not necessary to use only one I/O power supply to supply power to the entire Slave Terminal.

Consider the inrush current when the power supply is turned ON and select an I/O power supply with sufficient extra capacity. The inrush current when power is turned ON may prevent the I/O power supply from operating correctly.

5-4-3 Selecting Protective Devices

Consider the following items when you select protective devices (e.g., breakers and fuses) to protect against short circuits and overcurrents in external circuits.

• Protective device specifications (fusing, detection characteristics, steady current, inrush current, etc.)

• Inrush current when power is turned ON

Overcurrent is the current that flows when an excessive load is connected and one of the following ratings is exceeded.

• For the Unit power supply, the rating of the NX Unit power supply capacity or of the current capacity of the power supply terminals

• For the I/O power supply, the rating of the maximum I/O power supply current or of the current capacity of the power supply terminals

5-4-2 Selecting the I/O Power Supplies

Refer to 3-1-2 EtherCAT Coupler Unit Specifications on page 3-2 for the above ratings for the EtherCAT Coupler Unit. For the ratings of NX-series power supply-related Units, refer to the NX-series System Units User’s Manual (Cat. No. W523).

NX-series EtherCAT Coupler Unit User’s Manual (W519)

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5 Designing the Power Supply System

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NX-series EtherCAT Coupler Unit User’s Manual (W519)

Omron NX-ECC201 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Introduction

CONTENTS

Relevant Manuals

Manual Structure

Read and Understand this Manual

Safety Precautions

Precautions for Safe Use

Precautions for Correct Use

Regulations and Standards

Unit Versions

Related Manuals

Terminology

Revision History

Sections in this Manual

1-1 Introduction to EtherCAT

1-1-1 How EtherCAT Works

1-1-2 Types of EtherCAT Communications

1-2-1 System Configuration Example of an EtherCAT Network

1-2-2 Introduction to Configuration Devices

2-2-1 System Configuration

2-2-2 Types of NX Units

2-3 Support Software

2-3-2 Connection Method and Procedures

2-3-1 Applicable Support Software

2-3-3 Scope of Access When Connected to the USB Port on the EtherCAT Coupler Unit

3-1 Specifications

3-1-1 General Specifications of EtherCAT Slave Terminals

3-1-2 EtherCAT Coupler Unit Specifications

3-1-3 End Cover Specifications

3-2 Procedures

3-2-1 EtherCAT Slave Terminal Application Procedures

3-2-2 Details

4-1 Parts and Names

4-1-1 EtherCAT Coupler Units

4-1-2 NX Units

4-1-3 End Cover

4-2 Indicators

4-3-2 DIP Switch

4-3 Hardware Switch Settings

4-3-1 Rotary Switches

4-3-3 Setting the Node Address

4-4 Communications Connector and Peripheral USB Port

4-5 Terminal Block

4-6 DIN Track Contact Plate

5-1-1 Power Supply System and Types of Power Supplies

5-1-2 NX-series Power Supply-related Units

5-1-3 Design Concepts for Power Supply to the EtherCAT Slave Terminal

5-2-1 Procedure for Designing the NX Unit Power Supply System

5-2-2 Calculation Example for the NX Unit Power Supply

5-3 Designing the I/O Power Supply System

5-3-1 I/O Power Supply Method

5-3-2 Designing the I/O Power Supply from the NX Bus

5-3-3 Designing the I/O Power Supply from External Sources

5-4 Selecting External Power Supplies and Protective Devices

5-4-1 Selecting the Unit Power Supply

5-4-3 Selecting Protective Devices

5-4-2 Selecting the I/O Power Supplies