Omron SMARTSLICE - 04-2008 User manual

DeviceNet Communications Unit
Cat. No. W454-E1-03
SmartSlice
GRT1-DRT
OPERATION MANUAL

SmartSlice
GRT1-DRT
DeviceNet Communications Unit
Operation Manual
Revised April 2008

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Notice:
OMRON products are manufactured for use according to proper procedures by a qualified operator
and only for the purposes described in this manual.
The following conventions are used to indicate and classify precautions in this manual. Always heed
the information provided with them. Failure to heed precautions can result in injury to people or dam-
age to property.
!DANGER Indicates an imminently hazardous situation which, if not avoided, will result in death or
serious injury. Additionally, there may be severe property damage.
!WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury. Additionally, there may be severe property damage.
!Caution Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury, or property damage.
OMRON Product References
All OMRON products are capitalized in this manual. The word “Unit” is also capitalized when it refers to
an OMRON product, regardless of whether or not it appears in the proper name of the product.
The abbreviation “Ch,” which appears in some displays and on some OMRON products, often means
“word” and is abbreviated “Wd” in documentation in this sense.
The abbreviation “PLC” means Programmable Controller. “PC” is used, however, in some Program-
ming Device displays to mean Programmable Controller.
Visual Aids
The following headings appear in the left column of the manual to help you locate different types of
information.
Note Indicates information of particular interest for efficient and convenient opera-
tion of the product.
1,2,3... 1. Indicates lists of one sort or another, such as procedures, checklists, etc.
OMRON, 2005
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form, o
r
by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior written permission o
f
OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because OMRON is con-
stantly 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.

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TABLE OF CONTENTS
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xv
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
2 General Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xviii
6 EC Directives. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
SECTION 1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Overview of Slice I/O Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Features and System Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-3 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-4 List of Available Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1-5 Basic Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SECTION 2
Component Names and Functions. . . . . . . . . . . . . . . . . . . . . 9
2-1 Nomenclature and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2-2 Node Address Settings and I/O Allocation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2-3 Unit Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SECTION 3
Installation and Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
3-1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
3-2 Power Supply Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
3-3 Wiring DeviceNet Communications Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3-4 Connecting the Turnback Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
SECTION 4
Setup and Operating Procedures . . . . . . . . . . . . . . . . . . . . . 51
4-1 Basic Operating Procedure and Example Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
4-2 Preparation for Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
4-3 Setting and Wiring Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
4-4 Starting Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
4-5 Checking Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
SECTION 5
Communications Characteristics . . . . . . . . . . . . . . . . . . . . . 61
5-1 Remote I/O Communications Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
5-2 Message Communications Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

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TABLE OF CONTENTS
SECTION 6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6-1 Troubleshooting Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6-2 LED Indicators and Error Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6-3 Reading the Error History with the DeviceNet Configurator . . . . . . . . . . . . . . . . . . . . . . . . 71
6-4 Other Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Appendices
A DeviceNet Explicit Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
B Using Another Company's Master Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
C Standard Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
D Power Consumption Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
E I/O Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

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About this Manual:
This manual describes the installation and operation of the DeviceNet Communications Unit for Slice I/
O Terminals and includes the sections described below. The DeviceNet Communications Unit for Slice
I/O Terminals is an interface Unit that connects Slice I/O Units with a DeviceNet Master.
Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate the DeviceNet Communications Units. Be sure to read the precau-
tions provided in the following section.
The following manuals also cover information related to DeviceNet applications. Use the DeviceNet
Operation Manual together with other required manuals.
Precautions provides general precautions for planning, installing, and operating the DeviceNet Com-
munications Unit and related devices.
Section 1 provides an overview of the DeviceNet Communications Unit with information such as the
features and system configuration.
Section 2 describes the DeviceNet Communications Unit’s components, describes the Unit’s functions
in detail, and explains how to allocate I/O.
Section 3 explains how to install and wire the DeviceNet Communications Unit and Slice I/O Termi-
nals.
Section 4 describes the procedures required to begin actual communications between the DeviceNet
Communications Unit and Slice I/O Terminals.
Section 5 provides information on communications using the remote I/O communications function and
message communications function, such as response times and transmission delays.
Section 6 explains how to monitor and correct errors that occur in a DeviceNet Communications Unit
or Slice I/O Unit, interpret the Unit’s LED indicators, and read the error history from the DeviceNet Con-
figurator.
Appendix explains how to handle EDS setting files required for multivendor environments and how to
list the device profile of the DeviceNet Communications Unit and information on related products.
Manual Contents Cat. No.
DeviceNet Communications Unit
for Slice I/O Terminals
Operation Manual
(this manual)
Describes the specifications, functions, operating procedures, and
applications of the DeviceNet Communications Unit, which allows
Slice I/O Units to be set, controlled, and monitored through
DeviceNet.
W454
GRT1 Series
Slice I/O Units
Operation Manual
Describes the models, specifications, functions, operating proce-
dures, and applications of GRT1-series Slice I/O Units.
W455
DeviceNet
Operation Manual
Describes the configuration and construction of a DeviceNet network,
including installation procedures and specifications for cables, con-
nectors, and other connection devices, as well as information on
functions, operating procedures, and applications.
Read this manual carefully and be sure you understand the informa-
tion provided before attempting to use DeviceNet.
W267
CS/CJ Series
DeviceNet Units
Operation Manual
Describes the specifications, functions, operating procedures, and
applications of CS-series and CJ-series DeviceNet Units. (A CS/CJ-
series DeviceNet Unit can operate as both a DeviceNet master and
DeviceNet slave at the same time.)
W380
DeviceNet Configurator Ver. 2.@
Operation Manual
Describes the operating procedures of the DeviceNet Configurator.
The DeviceNet Configurator can be used to configure, set, and main-
tain a DeviceNet system through an easy-to-use graphical interface.
Refer to this manual when necessary.
W382

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!WARNING Failure to read and understand the information provided in this manual may result in per-
sonal injury or death, damage to the product, or product failure. Please read each section
in its entirety and be sure you understand the information provided in the section and
related sections before attempting any of the procedures or operations given.

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Read and Understand this Manual
Please read and understand this manual before using the product. 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 REPRESENTATION, 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 CONNECTED 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 MAINTAINED AND NOT SUBJECT TO
CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR.

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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:
• Outdoor 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 EQUIPMENT OR SYSTEM.
PROGRAMMABLE PRODUCTS
OMRON shall not be responsible for the user's programming of a programmable product, or any
consequence thereof.

xiii
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.

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PRECAUTIONS
This section provides general precautions for installing and using the DeviceNet Communications Unit and related devices.
The information contained in this section is important for the safe and reliable application of the DeviceNet
Communications Unit. You must read this section and understand the information contained before attempting to
set up or operate a DeviceNet network using a DeviceNet Communications Unit.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
6 EC Directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix

xvi
Intended Audience 1
1 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 purchasing FA systems.
• Personnel in charge of designing FA systems.
• Personnel in charge of installing and connecting FA systems.
• Personnel in charge of managing FA systems and facilities.
2 General Precautions
The user must operate the product according to the specifications described
in the operation manuals.
Before using the product under conditions which are not described in the
manual or applying the product to nuclear control systems, railroad systems,
aviation systems, vehicles, combustion systems, medical equipment, amuse-
ment machines, safety equipment, and other systems, machines, and equip-
ment that may have a serious influence on lives and property if used
improperly, consult your OMRON representative.
Make sure that the ratings and performance characteristics of the product are
sufficient for the systems, machines, and equipment, and be sure to provide
the systems, machines, and equipment with redundant safety mechanisms.
This manual provides information for installing and operating OMRON
DeviceNet products. Be sure to read this manual before operation and keep
this manual close at hand for reference during operation.
!WARNING It is extremely important that a PLC and all PLC Units be used for the speci-
fied purpose and under the specified conditions, especially in applications that
can directly or indirectly affect human life. You must consult with your OMRON
representative before applying a PLC system to the above mentioned applica-
tions.
3 Safety Precautions
!WARNING Never attempt to disassemble any Units or touch the terminal block while
power is being supplied. Doing so may result in serious electrical shock or
electrocution.
!WARNING Provide safety measures in external circuits (i.e., not in the Programmable
Controller), including the following items, to ensure safety in the system if an
abnormality occurs due to malfunction of the PLC or another external factor
affecting the PLC operation. Not doing so may result in serious accidents.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
• The PLC will stop operation when its self-diagnosis function detects any
error or when a severe failure alarm (FALS) instruction is executed. As a
countermeasure for such errors, external safety measures must be pro-
vided to ensure safety in the system.

xvii
Operating Environment Precautions 4
• The PLC outputs may remain ON or OFF due to deposits on or burning of
the output relays, or destruction of the output transistors. As a counter-
measure for such problems, external safety measures must be provided
to ensure safety in the system.
• When the 24-V DC output (service power supply to the PLC) is over-
loaded or short-circuited, the voltage may drop and result in the outputs
being turned OFF. As a countermeasure for such problems, external
safety measures must be provided to ensure safety in the system.
• Slice I/O Terminals will continue operating even if one or more I/O Units is
removed from or falls out of the Slice I/O Terminal, i.e., the other I/O Units
will continue control operations, including outputs. As a countermeasure
for such a possibility, external safety measures must be provided to
ensure safety in the system.
!WARNING The CPU Unit refreshes I/O even when the program is stopped (i.e., even in
PROGRAM mode). Confirm safety thoroughly in advance before changing the
status of any part of memory allocated to Output Units, Special I/O Units, or
CPU Bus Units. Any changes to the data allocated to any Unit may result in
unexpected operation of the loads connected to the Unit. Any of the following
operations may result in changes to memory status.
• Transferring I/O memory data to the CPU Unit from a Programming
Device
• Changing present values in memory from a Programming Device
• Force-setting/-resetting bits from a Programming Device
• Transferring I/O memory files from a Memory Card or EM file memory to
the CPU Unit
• Transferring I/O memory from a host computer or from another PLC on a
network
4 Operating Environment Precautions
Install the system properly according to the directions in this manual.
Do not operate the control system in the following places.
• 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 tem-
perature.
• Locations subject to corrosive or flammable gases.
• Locations subject to dust (especially iron dust) or salts.
• Locations subject to water, oil, or chemicals (General Units)
• Locations subject to acid or chemicals.
• Locations subject to shock or vibration.
Take appropriate and sufficient countermeasures when installing systems in
the following locations:
• 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 supplies.

xviii
Application Precautions 5
!Caution The operating environment of the PLC System can have a large effect on the
longevity and reliability of the system. Improper operating environments can
lead to malfunction, failure, and other unforeseeable problems with the PLC
System. Be sure that the operating environment is within the specified condi-
tions at installation and remains within the specified conditions during the life
of the system.
5 Application Precautions
Observe the following precautions when using the DeviceNet Communica-
tions Unit.
• Fail-safe measures must be taken by the customer to ensure safety in the
event of incorrect, missing, or abnormal signals caused by broken signal
lines, momentary power interruptions, or other causes.
• Provide external interlock circuits, limit circuits, and other safety circuits in
addition to any provided within the PLC to ensure safety.
• Use the power supplies specified in the operation manuals.
• If the system is installed at a site with poor power supply conditions, take
appropriate measures to ensure that the power supply remains within the
rated voltage and frequency specifications.
• Provide circuit breakers and other safety measures to provide protection
against shorts in external wiring.
• Always ground the system to 100 Ωor less when installing the system to
protect against electrical shock.
• Mount the PLC securely on DIN Track or with screws.
• Always turn OFF the power supply when mounting a DeviceNet Commu-
nications Unit.
• Always turn OFF the communications power supply and the power sup-
plies to the PLC and Slaves before attempting any of the following.
• Mounting or removing a Unit such as an I/O Unit, CPU Unit, Memory
Cassette, or Master Unit.
• Mounting or removing Remote I/O Terminal circuit sections.
• Assembling any devices or racks.
• Setting rotary switches.
• Connecting or wiring cables.
• Connecting or disconnecting connectors.
• Do not attempt to disassemble, repair, or modify any Units.
• Be sure that all the terminal screws are tightened to the torque specified
in the relevant manuals. Loose screws may cause fire, malfunction, or
damage the Unit.
• Be sure that all the mounting screws and cable connector screws are
tightened to the torque specified in the relevant manuals.
• Be sure that all the communications connector screws are tightened
securely. (The communications connector screw torque is 0.5 to 0.6 N•m.)
• Do not remove the label from a Unit before wiring. Always remove the
label after completing wiring, however, to ensure proper heat dispersion.
• Use the correct wiring components when wiring.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals.
• Double-check all wiring before turning ON the power supply.

xix
EC Directives 6
• When wiring or performing other tasks, do not allow metal objects such as
wire strands to enter the Unit.
• Always follow the electrical specifications for terminal polarity, communi-
cations path wiring, power supply wiring, and I/O jumpers. Incorrect wiring
can cause failures.
• Always wire the Unit as shown in the manual.
• Be sure to press terminals until they are fully seated.
• Mount Units only after checking terminal blocks completely.
• Be sure that the communications cable connectors and other items with
locking devices are properly locked into place.
• Do not drop the Unit or subject the Unit to excessive vibration or shock.
Doing so may cause malfunction or damage to the Unit.
• Use the special packing box when transporting the Unit. Ensure that the
product is handled carefully so that no excessive vibration or impact is
applied to the product during transportation.
• Check the user program for proper execution before actually running it
with the system.
• Do not bend or pull the cables excessively.
• When connecting communications cables, always turn OFF the PLC
power supply, all Slave power supplies, and all communications power
supplies.
• Observe the following precautions when wiring the communications
cables.
• Wire the communications cables separately from the power lines or
high-tension lines.
• Do not bend the communications cables excessively.
• Do not pull on the communications cables excessively.
• Do not place objects on top of the communications cables.
• Route communications cables inside ducts.
• Always enable the scan list before operation.
• Before clearing the scan list of a Unit that has user-allocated remote I/O,
always confirm that no errors occur after the I/O Area setting is changed
to fixed allocation.
• When adding a new node to the network, check that the new node’s baud
rate is the same as the baud rate set on the other nodes.
• Do not extend connection distances beyond the ranges given in the spec-
ifications.
6 EC Directives
DeviceNet products conform to EMS and low-voltage level directives as fol-
lows:
EMC Directives
OMRON devices that comply with EC Directives also conform to the related
EMC standards, so that they can more easily be built in to other devices or the
overall machine. The actual products have been checked for conformity to
EMC standards. Whether they 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 Direc-
tives will vary depending on the configuration, wiring, and other conditions of

xx
EC Directives 6
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.
1,2,3... 1. The DeviceNet Communications Units are designed for installation inside
control panels. All DeviceNet Units must be installed within control panels.
2. Use reinforced insulation or double insulation for the DC power supplies
used for the communications power supply, internal circuit power supply,
and the I/O power supplies. The power supplies must also be able to pro-
vide stable output for 10 ms when a momentary power interruption occurs
at the input.
3. The DeviceNet Communications Units conform to the EN61131-2 (Immu-
nity Zone A), EN61000-6-2, and EN61000-6-4 standards, but the 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 complies with EC Directives.
The following examples shows how to reduce noise.
1,2,3... 1. Noise from the communications cable can be reduced by installing a ferrite
core on the communications cable within 10 cm of the DeviceNet Commu-
nications Unit.
2. Wire the control panel with as thick and short cables as possible and
ground to 100 Ωmin.
3. Keep DeviceNet communications cables as short as possible and ground
to 100 Ωmin.
Ferrite Core (Data Line Filter): 0443-164151 (manufactured by Nisshin Electric)
Impedance specifications
25 MHz: 156 Ω
100 MHz: 250 Ω
30 mm
13 mm 29 mm
33 mm

1
SECTION 1
Overview
This section provides an overview of the DeviceNet Communications Unit, including basic information such as the features
and system configuration.
1-1 Overview of Slice I/O Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 Features and System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2-1 Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2-2 System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-3-1 Communications Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-3-2 General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1-3-3 DeviceNet Communications Unit Specifications . . . . . . . . . . . . . . . 5
1-4 List of Available Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1-5 Basic Operating Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7