Omron DEVICENET - User manual

DeviceNet
Cat. No. W267-E1-11
OPERATION MANUAL

DeviceNet
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.
Trademarks and Copyrights
COMBICON is a registered trademark of PHOENIX CONTACT.
DeviceNet is a registered trademark of the Open DeviceNet Vendor Association, Inc.
PowerTap is a registered trademark of the Allen-Bradley Company, Inc.
OMRON, 1996
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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
3 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
5 Application Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi
SECTION 1
Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 DeviceNet Network Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1-2 DeviceNet-compatible Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1-3 Communications Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
1-4 Basic Operating Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
SECTION 2
Network Configuration and Wiring . . . . . . . . . . . . . . . . . . . 21
2-1 Network Configuration Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
2-2 Network Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2-3 Cables, Connectors, and Related Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
2-4 Wiring Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
2-5 Minimizing Noise in the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
2-6 Operational Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
SECTION 3
Communications Power Supply Methods. . . . . . . . . . . . . . . 87
3-1 Basic Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
3-2 Flowchart: Determining Power Supply Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
3-3 Locating the Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
3-4 Step 1: Evaluating the Configuration with Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
3-5 Step 2: Evaluating the Configuration with Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
3-6 Step 3: Splitting the System into Multiple Power Supplies. . . . . . . . . . . . . . . . . . . . . . . . . . 101
Appendices
A Connectable Device Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
B Dimensions of Connectable Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
C Current Consumption of DeviceNet Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

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About this Manual:
This manual describes the configuration and installation of an OMRON DeviceNet network and
includes the sections described below.
Please read this manual carefully and be sure you understand the information provided before
attempting to install or operate the DeviceNet network. Be sure to read the precautions 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 net-
work and related devices.
Section 1 provides an overview of the DeviceNet network, including features, compatible OMRON
DeviceNet devices, communications specifications, and basic operating procedures.
Section 2 explains how to plan the Network configuration and connect the Network’s communications
wiring.
Section 3 describes the DeviceNet communications power supply methods and provides a step-by-
step procedure to determine the ideal location for the power supply (or power supplies.)
Appendix A provides lists of OMRON’s DeviceNet devices.
Appendix B shows the dimensions of the DeviceNet devices.
Appendix C shows the current requirements of the DeviceNet devices.
Manual Contents Cat. No.
DeviceNet
Operation Manual (this man-
ual)
Describes the configuration and construction of a DeviceNet network,
including installation procedures and specifications for cables, connec-
tors, and other connection devices, as well as information on functions,
operating procedures, and applications.
W267
DeviceNet CS/CJ Series Units
Operation Manual Describes the models, specifications, functions, operating procedures, and applications of CS-series and CJ-series DeviceNet Master Units. W380
DeviceNet Masters
Operation Manual Describes the models, specifications, functions, operating procedures, and applications of C200HX/HG/HE, CVM1, and CV-series DeviceNet
Master Units.
W379
DeviceNet DRT1 Series
Slaves Operation Manual Describes the models, specifications, functions, operating procedures, and applications of DRT1-series Smart Slave Units. W347
DeviceNet DRT2 Series
Slaves Operation Manual Describes the models, specifications, functions, operating procedures, and applications of DRT2-series Smart Slave Units. W404
DeviceNet Configurator Ver.
2.@Operation Manual Describes the operating procedures of the DeviceNet Configurator. W382
DeviceNet MULTIPLE I/O
TERMINAL Operation Manual Describes the models, specifications, functions, operating procedures, and applications of the DeviceNet MULTIPLE I/O TERMINALs. W348
!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.

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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 network and related devices.
The information contained in this section is important for the safe and reliable application of the DeviceNet network.
You must read this section and understand the information contained before attempting to set up or operate a
DeviceNet network.
1 Intended Audience . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvi
2 General Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii
3 Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xviii
4 Operating Environment Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xx
5 Application Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi

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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.

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General Precautions 2
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.

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Safety Precautions 3
3 Safety Precautions
!WARNING Never attempt to disassemble any Units while power is being supplied. Doing
so may result in serious electrical shock or electrocution.
!WARNING Make sure that the current or voltage input to the Unit is within the specified
ranges. Using a current or voltage outside of the specified range may result in
damage or fire.
!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.
1. Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
2. The PLC will turn OFF all outputs when its self-diagnosis function detects
any error or when a severe failure alarm (FALS) instruction is executed. Ex-
ternal safety measures must be provided to ensure safety in the system in
case an error or FALS instruction causes all outputs to be turned OFF.
3. The PLC outputs may remain ON or OFF due to fusing or burning of the
output relay contacts or destruction of the output transistors. External safe-
ty measures must be provided to ensure safety in the system in case the
outputs fail and remain ON or OFF.
4. When the 24-V DC output (service power supply to the PLC) is overloaded
or short-circuited, the voltage may drop and result in the outputs being
turned OFF. External safety measures must be provided to ensure safety
in the system in case of a power supply problem that causes outputs to be
turned OFF.
!WARNING The PLC’s CPU Unit continues I/O refreshing even when the program is not
being executed (in PROGRAM mode). Before proceeding with any of the fol-
lowing operations, verify that it is safe to do so in case the operation changes
the status of output bits allocated to Output Units or the data allocated to Spe-
cial I/O Units or CPU Bus Units. It is possible for a load connected to an Out-
put Unit, Special I/O Unit, or CPU Bus Unit to operate unexpectedly.
• Using a Programming Device (Support Software in a personal computer)
to transfer data to the CPU Unit’s I/O memory area.
• Using a Programming Device to change present values
• Using a Programming Device to force-set or force-reset bits
• Transferring an I/O memory file to the CPU Unit from EM file memory
• Transferring I/O memory from another PLC or host computer in the net-
work
!Caution Execute online edit only after confirming that no adverse effects will be
caused by extending the cycle time. Otherwise, the input signals may not be
readable.

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Safety Precautions 3
!Caution Confirm safety at the destination node before transferring or changing the pro-
gram, PLC Setup, I/O table, or I/O memory in another node. Changing data in
another node without confirming safety may cause unexpected operation and
result in injury.

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Operating Environment Precautions 4
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.
• 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.

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Application Precautions 5
5 Application Precautions
• 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.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits (i.e., not in the Pro-
grammable Controller).
• 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.
• Install external breakers and take other safety measures against short-cir-
cuiting in external wiring. Insufficient safety measures against short-cir-
cuiting may result in burning.
• Always ground the system to 100 Ωor less when installing the system to
protect against electrical shock.
• Make sure that the Unit is securely mounted, either to the DIN Track or by
screws.
• 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, Power Supply Unit,
CPU Unit, Memory Cassette, or Master Unit.
• Connecting or disconnecting Remote I/O Terminal circuits.
• Assembling any devices or racks.
• Setting DIP switches or rotary switches.
• Connecting or wiring cables.
• Connecting or disconnecting connectors.
• Do not attempt to disassemble, repair, or modify any Units.
• Make sure that the terminal block screws are tightened to the torque
specified in the relevant manuals. Loose screws may result in fire, mal-
function, or damage.
• Confirm that no adverse effect will occur in the system before attempting
any of the following.
• Changing the operating mode of the PLC (including the operating
mode setting when the power is turned ON)
• Force-setting/force-resetting any bit in memory
• Changing the present value of any word or any set value in memory
• Make sure that all the mounting screws, terminal screws, and cable con-
nector screws are tightened to the torque specified in the relevant manu-
als.
• Make sure that communications connector screws are securely tightened
to a torque of 0.5 to 0.6 N·m.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals.
• Double-check all wiring and switch settings before turning ON the power
supply.
• Make sure that metal filings do not get inside of the Unit during wiring and
installation.