Omron NX Series User manual

NX/GX-series
IO-Link System
User’s Manual
W570-E1-07

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. Neverthe-
less, 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.
• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan and other
countries for OMRON factory automation products.
• Microsoft, Windows, Excel, and Visual Basic are either registered trademarks or trademarks of Microsoft Corpora-
tion in the United States and other countries.
• EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.
• Safety over EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany.
• ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP are trademarks of ODVA.
• The SD and SDHC logos are trademarks of SD-3C, LLC.
Other company names and product names in this document are the trademarks or registered trademarks of their
respective companies.
Trademarks
Copyrights
NOTE
Microsoft product screen shots reprinted with permission from Microsoft Corporation.

Introduction
Thank you for purchasing an NX-series IO-Link Master Unit or GX-series IO-Link Master Unit.
This manual provides information necessary to use NX-series IO-Link Master Units and GX-series IO-
Link Master Units to build IO-Link Systems. Please read this manual and make sure you understand
the functionality and performance of the NX-series IO-Link Master Unit before you attempt to build an
IO-Link 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 sys-
tems (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 B 3503.
Applicable Products
This manual covers the following products.
• NX-series IO-Link Master Unit
NX-ILM400
• GX-series IO-Link Master Unit
GX-ILM08C
Introduction
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NX/GX-series IO-Link System User’s Manual (W570)

Introduction
2NX/GX-series IO-Link System User’s Manual (W570)

CONTENTS
Introduction .............................................................................................................. 1
Intended Audience...........................................................................................................................................1
Applicable Products .........................................................................................................................................1
Relevant Manuals..................................................................................................... 8
Manual Structure...................................................................................................... 9
Page Structure.................................................................................................................................................9
Special Information ........................................................................................................................................10
Precaution on Terminology ............................................................................................................................10
Terms and Conditions Agreement........................................................................ 12
Warranty, Limitations of Liability ....................................................................................................................12
Application Considerations ............................................................................................................................13
Disclaimers ....................................................................................................................................................13
Safety Precautions................................................................................................. 15
Definition of Precautionary Information..........................................................................................................15
Symbols .........................................................................................................................................................15
Warnings........................................................................................................................................................15
Cautions.........................................................................................................................................................15
Precautions for Safe Use ...................................................................................... 16
Precautions for Correct Use ................................................................................. 17
Regulations and Standards .................................................................................. 20
Related Manuals..................................................................................................... 21
Terminology............................................................................................................ 25
Revision History..................................................................................................... 28
Sections in this Manual ......................................................................................... 29
Section 1 Introduction to IO-Link Systems
1-1 Introduction to and Features of IO-Link Systems...............................................................1-2
1-1-1 What Is IO-Link? .........................................................................................................................1-2
1-1-2 Overview of IO-Link System Configurations ...............................................................................1-2
1-1-3 Introduction to IO-Link Systems ..................................................................................................1-3
1-1-4 Features of an IO-Link System ...................................................................................................1-6
1-2 System Configuration............................................................................................................1-8
1-2-1 Types of Communications with the Controller.............................................................................1-8
1-2-2 Controller Communications with EtherCAT .................................................................................1-8
1-2-3 Controller Communications with EtherNet/IP............................................................................1-10
1-2-4 Controller Communications with NX Bus .................................................................................. 1-11
1-3 Communications Specifications and IO-Link Devices .....................................................1-13
1-3-1 Communications Specifications ................................................................................................1-13
1-3-2 OMRON IO-Link Products.........................................................................................................1-13
1-4 Communications for IO-Link Systems...............................................................................1-15
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1-4-1 Data in the Devices in an IO-Link System and How to Access It..............................................1-15
1-4-2 Cyclic Communications.............................................................................................................1-23
1-4-3 Message Communications........................................................................................................1-24
1-5 IO-Link Master Unit Functions............................................................................................1-25
1-6 Startup Procedures..............................................................................................................1-28
1-6-1 Controller Communications with EtherCAT ...............................................................................1-28
1-6-2 Controller Communications with EtherNet/IP............................................................................1-32
1-6-3 Controller Communications with NX Bus ..................................................................................1-33
Section 2 Part Names and Wiring
2-1 Part Names and Functions....................................................................................................2-2
2-1-1 Appearance of the IO-Link Master Units .....................................................................................2-2
2-1-2 Indicators on IO-Link Master Units..............................................................................................2-2
2-1-3 Terminals for Connecting the IO-Link Master Unit to IO-Link Devices ........................................2-3
2-2 Communications Modes and IO-Link Wiring ......................................................................2-5
2-2-1 In IO-Link Mode...........................................................................................................................2-5
2-2-2 SIO (DI) Mode .............................................................................................................................2-6
2-2-3 SIO (DO) Mode ...........................................................................................................................2-8
2-3 Supplying Unit Power and I/O Power.................................................................................2-10
2-3-1 Unit Power Supply and I/O Power Supply Methods..................................................................2-10
2-3-2 Calculating the Current Consumption of the IO-Link Master Unit from the I/O Power Supply .. 2-11
2-3-3 Precautions for the Unit Power Supply and the I/O Power Supply ...........................................2-11
Section 3 Parameter Settings
3-1 Types of Parameters..............................................................................................................3-2
3-2 IO-Link Master Unit Parameters ...........................................................................................3-3
3-3 Parameters for IO-Link Devices............................................................................................3-7
Section 4 I/O Data
4-1 Outline of I/O Data..................................................................................................................4-2
4-1-1 Introduction to I/O Data and Types of I/O Data ...........................................................................4-2
4-1-2 Types of I/O Data ........................................................................................................................4-2
4-1-3 Allocated I/O Data According to Communications Mode ............................................................4-4
4-2 I/O Data Details.......................................................................................................................4-7
4-2-1 Input Data (from the IO-Link Master Unit to the Controller) ........................................................4-7
4-2-2 Output Data (from the Controller to the IO-Link Master Unit)....................................................4-16
4-3 I/O Allocation Settings.........................................................................................................4-18
4-3-1 What Are I/O Allocation Settings?.............................................................................................4-18
4-3-2 When Are I/O Allocation Settings Required? ............................................................................4-18
4-3-3 I/O Allocation Setting Method....................................................................................................4-19
4-4 Specifying I/O Data in the User Program...........................................................................4-20
4-4-1 Controller Communications Using EtherCAT (NX-type IO-Link Master Unit or GX-type
IO-Link Master Unit) ..................................................................................................................4-20
4-4-2 Controller Communications Using EtherNet/IP (NX-type IO-Link Master Unit).........................4-20
4-4-3 Controller Communications Using NX Bus (NX-type IO-Link Master Unit) ...............................4-20
Section 5 Status and Software Switches Other Than for I/O Data
5-1 Overview of Status and Software Switches Other Than for I/O Data and Their Types ...5-2
CONTENTS
4NX/GX-series IO-Link System User’s Manual (W570)

5-2 Details on Status and Software Switches Other Than for I/O Data ...................................5-3
5-2-1 Status ..........................................................................................................................................5-3
5-2-2 Software Switches.......................................................................................................................5-5
Section 6 IO-Link System Communications
6-1 Types and Startup of Communications for IO-Link Systems ............................................6-2
6-1-1 Types of Communications for IO-Link Systems ..........................................................................6-2
6-1-2 Starting Communications between the Controller and the IO-Link Master .................................6-2
6-1-3 Starting IO-Link Communications between the IO-Link Master and the IO-Link Devices...........6-2
6-2 Cyclic Communications ........................................................................................................6-4
6-2-1 Introduction to Cyclic Communications .......................................................................................6-4
6-2-2 Start Timing of Cyclic Communications in IO-Link Communications ..........................................6-5
6-2-3 Writing a Program for Cyclic Communications for IO-Link Communications ..............................6-5
6-2-4 Stopping IO-Link Cyclic Communications ...................................................................................6-5
6-2-5 Operation When an IO-Link Device Is Disconnected..................................................................6-6
6-2-6 Cyclic Communications Response Performance ........................................................................6-6
6-3 Message Communications....................................................................................................6-7
6-3-1 Introduction to Message Communications ..................................................................................6-7
6-3-2 Message Communications with the IO-Link Master....................................................................6-8
6-3-3 Message Communications with IO-Link Devices ...................................................................... 6-11
Section 7 Functions of IO-Link Master Units
7-1 Communications Mode Settings ..........................................................................................7-2
7-1-1 Functions Supported by Each Communications Mode ...............................................................7-2
7-1-2 Setting Method ............................................................................................................................7-5
7-2 Connected Device Verification .............................................................................................7-7
7-2-1 Overview .....................................................................................................................................7-7
7-2-2 Setting Method ............................................................................................................................7-8
7-3 Load Rejection for Controller Communications Errors ...................................................7-10
7-3-1 Overview ...................................................................................................................................7-10
7-3-2 Setting Method ..........................................................................................................................7-11
7-4 IO-Link Total Communications Lost Frames.....................................................................7-12
7-4-1 Overview ...................................................................................................................................7-12
7-4-2 Application Method....................................................................................................................7-12
7-5 Digital Input Filter ................................................................................................................7-15
7-5-1 Overview ...................................................................................................................................7-15
7-5-2 Setting Method ..........................................................................................................................7-15
7-6 Backup and Restoration of Parameter Settings in IO-Link Devices ...............................7-16
7-6-1 Overview of Backup and Restore Operations ...........................................................................7-16
7-6-2 Backing Up Settings..................................................................................................................7-17
7-6-3 Restoring Settings.....................................................................................................................7-21
7-6-4 Conditions for Backing Up and Restoring Parameter Settings When IO-Link Communi-
cations Start ..............................................................................................................................7-21
7-6-5 Clearing Backup Data ...............................................................................................................7-22
7-6-6 Application Procedure ...............................................................................................................7-25
7-7 Digital Input Collection........................................................................................................7-26
7-7-1 Overview ...................................................................................................................................7-26
7-7-2 Setting Method ..........................................................................................................................7-28
Section 8 Applicable Support Software for IO-Link Systems
8-1 Applications and Types of the Support Software ...............................................................8-2
CONTENTS
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8-2 Sysmac Studio Procedures ..................................................................................................8-4
8-2-1 Flow of Operations for the Sysmac Studio..................................................................................8-4
8-2-2 Setting Parameters in the IO-Link Master Unit............................................................................8-8
8-2-3 Changing I/O Data Sizes in the IO-Link Master Unit.................................................................8-10
8-2-4 IO-Link Master Simple Settings.................................................................................................8-15
8-3 NX-IO Configurator Procedures .........................................................................................8-23
8-3-1 Setting Parameters in the IO-Link Master Unit..........................................................................8-23
8-3-2 Changing I/O Data Sizes in the IO-Link Master Unit.................................................................8-23
8-3-3 IO-Link Master Simple Settings.................................................................................................8-23
8-4 CX-ConfiguratorFDT Procedures .......................................................................................8-24
8-4-1 Overview of CX-ConfiguratorFDT .............................................................................................8-24
8-4-2 Flow of Operations for CX-ConfiguratorFDT.............................................................................8-25
8-4-3 Installing CX-ConfiguratorFDT in Your Computer .....................................................................8-26
8-4-4 Installing IODD Files for IO-Link Devices from Other Companies in CX-ConfiguratorFDT.......8-26
8-4-5 Starting CX-ConfiguratorFDT....................................................................................................8-27
8-4-6 Creating the Network Configuration ..........................................................................................8-28
8-4-7 Going Online .............................................................................................................................8-33
8-4-8 Transferring the IO-Link Device Parameters.............................................................................8-45
Section 9 Example of Operations for IO-Link Systems
9-1 Assumed Configuration ........................................................................................................9-2
9-2 System Configuration Example............................................................................................9-3
9-3 Controller Communications Setup.......................................................................................9-5
9-4 IO-Link Master Unit Settings.................................................................................................9-6
9-4-1 Setting Parameters from the Sysmac Studio ..............................................................................9-6
9-4-2 I/O Allocation Settings or PDO Mapping Settings from the Sysmac Studio................................9-6
9-5 Allocating Variables to the I/O Ports....................................................................................9-7
9-5-1 Checking the Status of the IO-Link Master Unit ..........................................................................9-7
9-5-2 IO-Link Process Input Data from E3Z Photoelectric Sensors, and I/O Map ...............................9-7
9-5-3 IO-Link Process Input Data from E3S Color Mark Sensors, and I/O Map ..................................9-8
9-6 Programming........................................................................................................................ 9-11
9-6-1 Reading Input Data from Sensors.............................................................................................9-11
9-7 Turning ON the Power .........................................................................................................9-15
9-8 Downloading the Network Configuration Information and the User Program...............9-16
9-9 Setting IO-Link Device Parameters and Downloading Them to the IO-Link Devices....9-17
9-10 Confirming the Start of Communications..........................................................................9-18
Section 10 Troubleshooting for IO-Link Systems
10-1 IO-Link Error and Device Error Notifications and Checking Methods............................10-2
10-1-1 Overview ...................................................................................................................................10-2
10-1-2 Checking for Errors ...................................................................................................................10-7
10-1-3 Error Notification with the I/O Port Error Status in the I/O Data ................................................10-7
10-1-4 Error Notification with the Sysmac Error Status in the I/O Data................................................10-7
10-1-5 Error Notification with Emergency Messages (GX-type IO-Link Master Units Only).................10-8
10-1-6 Error Notifications Based on the AL Status (GX-type IO-Link Master Units Only) .................. 10-11
10-1-7 Checking for Errors and Troubleshooting with the Indicators on the Front Panel of the
IO-Link Master Unit .................................................................................................................10-13
10-1-8 Assumed Causes and Corrections for Other Errors................................................................10-20
10-2 Checking for Errors and Troubleshooting with Tools ....................................................10-22
10-2-1 Checking for Errors from the Sysmac Studio ..........................................................................10-22
10-2-2 Checking for Errors from Support Software Other Than the Sysmac Studio ..........................10-23
10-2-3 Sysmac Error Tables ...............................................................................................................10-24
CONTENTS
6NX/GX-series IO-Link System User’s Manual (W570)

10-2-4 Sysmac Error Descriptions......................................................................................................10-30
10-2-5 Reading Event Logs from a Tool .............................................................................................10-53
10-2-6 Clearing Event Logs from a Tool .............................................................................................10-53
10-2-7 Exporting Event Logs from a Tool ...........................................................................................10-54
10-3 Backing Up Settings and Replacing Units ......................................................................10-55
10-3-1 Backup and Restore Methods.................................................................................................10-55
10-3-2 Replacing the IO-Link Master Unit or IO-Link Devices............................................................10-57
10-3-3 Replacing the IO-Link Master Unit and IO-Link Devices at the Same Time............................10-59
Appendices
A-1 Other System Configurations .............................................................................................. A-2
A-1-1 Using a Controller from Another Company with EtherCAT Communications............................. A-2
A-1-2 Using an NJ/NX-series CPU Unit or NY-series Industrial PC with EtherNet/IP Commu-
nications ..................................................................................................................................... A-8
A-1-3 Using a CJ/CP/CS-series PLC or a Controller from Another Company with EtherNet/IP
Communications ...................................................................................................................... A-14
A-2 Connected Device Specifications and Models................................................................. A-21
A-3 How to Access the IO-Link Devices with Message Communications ........................... A-25
A-3-1 Applicable System Configurations ........................................................................................... A-25
A-3-2 Overview of Access Methods................................................................................................... A-26
A-3-3 Details on Access Methods...................................................................................................... A-29
A-4 Precautions When Using the OMRON EtherNet/IP with CX-ConfiguratorFDT.............. A-35
Index
CONTENTS
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NX/GX-series IO-Link System User’s Manual (W570)

Relevant Manuals
The table below provides the relevant manuals for the IO-Link System.
Read all of the manuals that are relevant to your system configuration and application to make the
most of the IO-Link System.
Other manuals, such as related product manuals, are necessary for specific system configurations
and applications. Refer to Related Manuals on page 21 for the related manuals.
Manual name Application
NX/GX-series
IO-Link System User’s Manual
Learning everything from an introduction to details about IO-Link
Systems that use NX/GX-series IO-Link Master Units, including
mainly software information common to all IO-Link masters, Support
Software operating methods, and troubleshooting.
NX-series
IO-Link Master Unit
User’s Manual
Learning hardware information, wiring, and specifications for the NX-
series IO-Link Master Unit and checking a list of NX objects.
GX-series EtherCAT Slave Units User's
Manual
Learning hardware information, wiring, and specifications for the GX-
series IO-Link Master Unit and checking a list of NX objects.
NX-series
Data Reference Manual
Referencing lists of the data that is required to configure systems
with NX-series Units.
Relevant Manuals
8NX/GX-series IO-Link System User’s Manual (W570)

Manual Structure
Page Structure
The following page structure is used in this manual.
4-9
4 Installation and Wiring
NJ-series CPU Unit Hardware User’s Manual (W500)
s
t
i
n
U
gnitn
u
oM
3-4
4
s
t
ne
no
p
m
o
C
rel
l
o
r
t
n
oC
g
n
i
tc
e
n
noC
1
-
3-
4
4-3 Mounting Units
The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connected in the
same way to the Unit on the far right side of the Controller.
1Join the Units so that the connectors fit exactly.
2The yellow sliders at the top and bottom of each Unit lock the Units together. Move the sliders
toward the back of the Units as shown below until they click into place.
Precautions for Correct UsePrecautions for Correct Use
4-3-1 Connecting Controller Components
Connector
Hook Hook holes
Slider
Lock
Release
Move the sliders toward the back
until they lock into place.
Level 1 heading
Level 2 heading
Level 3 heading
Level 2 heading
A step in a procedure
Manual name
Special information
Level 3 heading
Page tab
Gives the current
headings.
Indicates a procedure.
Icons indicate
precautions, additional
information, or reference
information.
Gives the number
of the main section.
This illustration is provided only as a sample. It may not literally appear in this manual.
The sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O
Units, and CPU Bus Units must be completely locked (until they click into place) after connecting
the adjacent Unit connectors.
Manual Structure
9
NX/GX-series IO-Link System User’s Manual (W570)

Special Information
Special information in this manual is classified as follows:
Precautions for Safe Use
Precautions on what to do and what not to do to ensure safe usage of the product.
Precautions for Correct Use
Precautions on what to do and what not to do to ensure proper operation and performance.
Additional Information
Additional information to read as required.
This information is provided to increase understanding or make operation easier.
Version Information
Information on differences in specifications and functionality for Controller with different unit versions
and for different versions of the Sysmac Studio is given.
Precaution on Terminology
• This user’s manual refers to the "IO-Link System that uses an NX/GX-series IO-Link Master Unit" as
simply a "IO-Link System".
•In this manual, "download" refers to transferring data from the Support Software to a physical device
and "upload" refers to transferring data from a physical device to the Support Software.
• In this manual, the directions in relation to the Units are given in the following figure, which shows
upright installation.
RightLeft
Up
Down
• This user's manual refers to "NY-series IPC Machine Controller Industrial Panel PCs and Industrial
Box PCs" as simply "Industrial PCs" or as "NY-series Industrial PCs".
Manual Structure
10 NX/GX-series IO-Link System User’s Manual (W570)

• This user’s manual refers to the "built-in EtherCAT port on an NJ/NX-series Controller" or "built-in
EtherCAT port on an NY-series Industrial PC" as simply a "built-in EtherCAT port".
• This user's manual may omit manual names and manual numbers in places that refer to the user's
manuals for CPU Units and Industrial PCs. The following table gives some examples.
Examples:
Manual name Omitted contents Common text
NJ/NX-series CPU Unit Software User's
Manual
Software user's manual for the con-
nected CPU Unit or Industrial PC
Software User's Manual
NY-series IPC Machine Controller Industri-
al Panel PC / Industrial Box PC Software
User’s Manual
NJ/NX-series CPU Unit Built-in EtherCAT®
Port User's Manual
User's manual for the built-in Ether-
CAT port on the connected CPU
Unit or Industrial PC
Built-in EtherCAT port
NY-series IPC Machine Controller Industri-
al Panel PC / Industrial Box PC Built-in
EtherCAT® Port User’s Manual
• This user's manual may omit manual names and manual numbers in places that refer to the user's
manuals for Communications Coupler Units.
• If the manual names and manual numbers for CPU Units are omitted, refer to Related Manuals on
page 21 to determine the appropriate manual based on the common text for the omitted contents.
If the manual names and manual numbers for Communications Coupler Units are omitted, refer to
Related Manuals on page 21 to identify the manual for your Unit.
Manual Structure
11
NX/GX-series IO-Link System User’s Manual (W570)

Terms and Conditions Agreement
Warranty, Limitations of Liability
Warranties
lExclusive Warranty
Omron’s exclusive warranty is that the Products will be free from defects in materials and work-
manship for a period of twelve months from the date of sale by Omron (or such other period ex-
pressed in writing by Omron). Omron disclaims all other warranties, express or implied.
lLimitations
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF
THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based
on infringement by the Products or otherwise of any intellectual property right.
lBuyer Remedy
Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally
shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-com-
plying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal
to the purchase price of the non-complying Product; provided that in no event shall Omron be re-
sponsible for warranty, repair, indemnity or any other claims or expenses regarding the Products
unless Omron’s analysis confirms that the Products were properly handled, stored, installed and
maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return
of any Products by Buyer must be approved in writing by Omron before shipment. Omron Compa-
nies shall not be liable for the suitability or unsuitability or the results from the use of Products in
combination with any electrical or electronic components, circuits, system assemblies or any other
materials or substances or environments. Any advice, recommendations or information given orally
or in writing, are not to be construed as an amendment or addition to the above warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CON-
SEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY
Terms and Conditions Agreement
12 NX/GX-series IO-Link System User’s Manual (W570)

WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT,
WARRANTY
, NEGLIGENCE OR STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of the Product on
which liability is asserted.
Application Considerations
Suitability of Use
Omron Companies shall not be responsible for conformity with any standards, codes or regulations
which apply to the combination of the Product in the Buyer’s application or use of the Product. At Buy-
er’s request, Omron will provide applicable third party certification documents identifying ratings and
limitations of use which apply to the Product. This information by itself is not sufficient for a complete
determination of the suitability of the Product in combination with the end product, machine, system, or
other application or use. Buyer shall be solely responsible for determining appropriateness of the par-
ticular Product with respect to Buyer’s application, product or system. Buyer shall take application re-
sponsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR
PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE
HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIP-
MENT OR SYSTEM.
Programmable Products
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or
any consequence thereof.
Disclaimers
Performance Data
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for
the user in determining suitability and does not constitute a warranty. It may represent the result of
Omron’s test conditions, and the user must correlate it to actual application requirements. Actual per-
formance is subject to the Omron’s Warranty and Limitations of Liability.
Change in Specifications
Product specifications and accessories may be changed at any time based on improvements and oth-
er reasons. It is our practice to change part numbers when published ratings or features are changed,
or when significant construction changes are made. However, some specifications of the Product may
Terms and Conditions Agreement
13
NX/GX-series IO-Link System User’s Manual (W570)

be changed without any notice. When in doubt, special part numbers may be assigned to fix or estab-
lish key specifications for your application. Please consult with your Omron’s representative at any
time to confirm actual specifications of purchased Product.
Errors and Omissions
Information presented by Omron Companies has been checked and is believed to be accurate; how-
ever, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.
Terms and Conditions Agreement
14 NX/GX-series IO-Link System User’s Manual (W570)

Safety Precautions
Definition of Precautionary Information
The following notation is used in this manual to provide precautions required to ensure safe usage of
an IO-Link System.
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.
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.
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.
Warnings
Refer to the user’s manuals for the IO-Link Master Units for warnings that are specific to the IO-Link
Master Units.
Cautions
Refer to the user’s manuals for the IO-Link Master Units for precautions that are specific to the IO-Link
Master Units.
Safety Precautions
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NX/GX-series IO-Link System User’s Manual (W570)

Precautions for Safe Use
This section provides safety precautions for IO-Link Systems.
Refer to the user’s manuals for the IO-Link Master Units for safety precautions that are specific to the
IO-Link Master Units.
Setting Ports on an IO-Link Master Unit
Do not connect a non-IO-Link actuator to a port that is set to IO-Link Mode.
Depending on the operation to establish IO-Link communications, the actuator may unexpectedly and
repeatedly turn ON and OFF in a short cycle.
Setting Digital Input Collection
• When you use the digital input collection in IO-Link Mode, set the Digital Input Collection Setting
to Enable. If it is set to Disable, the digital input data for pin 2 will be input for the digital input data
and the digital input data may become unintended input values.
Furthermore, always sufficiently check the Offset Setting of Digital Input Collection and then
make the setting. If it is set incorrectly, the digital input data may become unintended input values.
• When you do not use the digital input collection in IO-Link Mode, set the Digital Input Collection
Setting to Disable. If it is set to Enable, the bit data specified in the input data from the IO-Link de-
vice will be input for the digital input data and the digital input data may become unintended input
values.
Precautions for Safe Use
16 NX/GX-series IO-Link System User’s Manual (W570)

Precautions for Correct Use
This section provides application precautions for IO-Link Systems.
Refer to the user’s manuals for the IO-Link Master Units for application precautions that are specific to
the IO-Link Master Units.
Setting Ports on an IO-Link Master Unit
• When you connect devices to an IO-Link Master Unit, check the following settings for the ports on
the IO-Link Master Unit.
Communications Mode Settings: IO-Link Mode, SIO (DI) Mode, and SIO(DO) Mode
IO-Link Device Configuration Set-
tings:
Device ID, vendor ID, serial number, IO-Link revision, IO-Link input data
size, and IO-Link output data size
• The following operation will occur if the communications mode setting does not match the connected
device type.
a) If a non-IO-Link sensor is connected in IO-Link Mode, the sensor will operate but the IO-Link
Master Unit will not read the ON/OFF signals. An error will not be detected.
If connected device verification is enabled, an IO-Link communications error will occur.
b) If a non-IO-Link actuator is connected in IO-Link Mode, the actuator will perform unexpected op-
eration.
If connected device verification is enabled, an IO-Link communications error will occur.
c) If an IO-Link device is connected in SIO (DO) Mode, the IO-Link device will not operate. An error
will not be detected.
d) If an IO-Link device is connected in SIO (DI) Mode, the IO-Link device will operate in Standard
I/O Mode (SIO Mode).
e) If a non-IO-Link actuator is connected in SIO (DI) Mode, the actuator will not operate.
f) If a non-IO-Link sensor is connected in SIO (DO) Mode, the sensor will not operate.
IO-Link Device Verification Settings
To check the configuration when you replace devices, enable verification with the IO Link Device
Verification Setting. If you do not enable verification with the IO-Link Device Verification Setting,
errors will not be detected for an IO-Link System even if unwanted IO-Link devices are connected.
I/O Data Size Settings for IO-Link Devices and IO-Link Master Units
•IO-Link Device Configuration Settings
Observe the following precautions when you manually set the I/O data sizes for IO-Link devices in
the IO-Link Device Configuration Settings in the parameters of the IO-Link Master Unit from the
Support Software.
a) Set the IO-Link input data sizes in the IO-Link Device Configuration Settings to values that are
equal to or greater than the IO-Link input data sizes of the IO-Link devices.
If you set a value that is less than the input data size of an IO-Link device, a device I/O size error
will occur.
Precautions for Correct Use
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NX/GX-series IO-Link System User’s Manual (W570)

b) Set the IO-Link output data sizes in the IO-Link Device Configuration Settings to values that are
equal to or greater than the IO-Link output data sizes of the IO-Link devices.
If you set a value that is less than the output data size of an IO-Link device, a device I/O size
error will occur.
•I/O Allocation Settings in IO-Link Master Units
Observe the following precautions when you use the Support Software to set I/O allocations in IO-
Link Master Units.
a) Set the IO-Link input allocation data size in I/O allocations settings in the IO-Link Master Unit to
a value that is equal to or greater than the IO-Link input data size input to the IO-Link Master
Unit.
If you set a value that is less than the IO-Link input data size of the IO-Link Master Units, only
the set size of data will be input to the controller.
b) Set the IO-Link output allocation data size in I/O allocations settings in the IO-Link Master Unit to
a value that is equal to or greater than the IO-Link output data size of the IO-Link Master Unit.
If you set a value that is less than the output data size of the IO-Link Master Units, an error will
occur.
Programming Cyclic Communications
You must use the TRUE status of the Input Data Enabled Flag in the I/O data as a condition for proc-
essing the IO-Link process input data in IO-Link Mode in the user program of the controller.
Processing IO-Link Communications Errors
If an error occurs in IO-Link communications, IO-Link process input data in the IO-Link Master Unit re-
tains the previous values. To prevent malfunctions, write the user program so that I/O data processing
is not performed when the Input Data Enabled Flag is FALSE.
Replacing IO-Link Devices
Always turn OFF the I/O power supply before you replace an IO-Link device.
Changing IO-Link Device Parameter after Backing Up Parameter
Settings
If you change any settings in an IO-Link device after backing up the parameter settings in the IO-Link
devices to the IO-Link Master Unit, back up the parameter settings again.
If you do not back up the parameter settings, the parameter settings of the IO-Link device that were
changed will be overwritten by the backup data from before the settings of the IO-Link Master Unit
were changed if restoring settings is enabled in the Restoration Setting when IO-Link communica-
tions start.
Precautions for Correct Use
18 NX/GX-series IO-Link System User’s Manual (W570)