Omron CompoNetT E3NW-CRT User manual

CompoNetTM
Digital Sensor Communications Unit
E3NW-CRT
Cat. No. E430-E1-04
User's Manual

Thank you for purchasing the E3NW-CRT CompoNet Sensor Communications Unit.
This Communications Unit was developed with OMRON’s advanced technologies and vast
experience for use with E3NX-FA0-series Smart FiberAmplifier Units, E3NC-LA0-series Smart
Laser Amplifier Units (CMOS), and E3NC-SA0-series Smart Laser Amplifier Units.
ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP are trademarks of ODVA.
Other product names and company names used in this manual are the trademarks or registered
trademarks of the respective companies.
The copyright to the Digital Sensor Communications Unit belongs to OMRON Corporation.
Introduction
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 installing FA systems.
• Personnel in charge of designing FA systems.
• Personnel in charge of managing FA facilities.
Copyrights and Trademarks

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Introduction
Section 1 Section 2 Section 3 Section 4 Section 5
Introduction
Section 1
Section 2
Section 3
Section 4
Section 5
Application Considerations (Please read first)
Overview
Installation and Connections
CompoNet Communications Specifications
Using the Distributed Sensor Unit
User's Manual
Sensor Communications Unit
E3NW-CRT (CompoNet)
Appendices

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Terms and Conditions Agreement
Warranty, Limitations of Liability
■Warranties
●Exclusive Warranty
Omron’s exclusive warranty is that the Products will be free from defects in materials
and workmanship for a period of twelve months from the date of sale by Omron (or
such other period expressed in writing by Omron). Omron disclaims all other warran-
ties, express or implied.
●Limitations
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED,
ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICU-
LAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE
HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIRE-
MENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or
expenses based on infringement by the Products or otherwise of any intellectual prop-
erty right.
●Buyer Remedy
Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the
form originally shipped with Buyer responsible for labor charges for removal or replace-
ment thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii)
repay or credit Buyer an amount equal to the purchase price of the non-complying
Product; provided that in no event shall Omron be responsible for warranty, repair,
indemnity or any other claims or expenses regarding the Products unless Omron’s
analysis confirms that the Products were properly handled, stored, installed and main-
tained and not subject to contamination, abuse, misuse or inappropriate modification.
Return of any Products by Buyer must be approved in writing by Omron before ship-
ment. Omron Companies shall not be liable for the suitability or unsuitability or the
results from the use of Products in combination with any electrical or electronic compo-
nents, circuits, system assemblies or any other materials or substances or environ-
ments. 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.

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Introduction
■Limitation on Liability; Etc
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDEN-
TAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR
COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS,
WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR
STRICT LIABILITY.
Further, in no event shall liability of Omron Companies exceed the individual price of
the Product on which liability is asserted.
Application Considerations
■Suitability of Use
Omron Companies shall not be responsible for conformity with any standards, codes or
regulations which apply to the combination of the Product in the Buyer’s application or
use of the Product. At Buyer’s request, Omron will provide applicable third party certifi-
cation 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 applica-
tion or use. Buyer shall be solely responsible for determining appropriateness of the
particular Product with respect to Buyer’s application, product or system. Buyer shall
take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK
TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE
HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PROD-
UCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN
THE OVERALL EQUIPMENT OR SYSTEM.
■Programmable Products
Omron Companies shall not be responsible for the user’s programming of a program-
mable Product, or any consequence thereof.

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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 performance 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 improve-
ments and other reasons. It is our practice to change part numbers when published rat-
ings or features are changed, or when significant construction changes are made.
However, some specifications of the Product may be changed without any notice.
When in doubt, special part numbers may be assigned to fix or establish key specifica-
tions 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; however, no responsibility is assumed for clerical, typographical or proofread-
ing errors or omissions.

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Safety Precautions
This manual uses the following signs and symbols to ensure safe operation of this product.
These signs and symbols are important for avoiding personal injury or damage to the product.
Make sure that they are observed.
Safety Precautions
Symbols
The circle and slash symbol indicates operations that you must not do.
The specific operation is shown in the circle and explained in text.
This example indicates prohibiting disassembly.
The triangle symbol indicates precautions (including warnings).
The specific operation is shown in the triangle and explained in text.
This example indicates a 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.
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.
Indicate a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury, or property
damage.

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Safety Precautions
Do not touch the terminals or disassemble the Unit and touch any internal compo-
nents while power is being supplied. Do not supply power while the cover is open.
Doing so may result in electric shock.
Do not attempt to disassemble, repair, or modify any Units. Any attempt to do so
may result in electric shock.
Provide safety measures in external circuits, i.e., not in the Sensor Communications
Unit, in order to ensure safety in the system if an abnormality occurs due to malfunc-
tion 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 mea-
sures 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. As a coun-
termeasure for such errors, external safety measures must be provided to
ensure safety in the system.
(3) The outputs from the Sensor Communications Unit may remain ON or OFF due
to deposition or burning of the output relays or destruction of the output transis-
tors. As a countermeasure for such problems, external safetymeasures must be
provided to ensure safety in the system.
(4) When the 24-VDC output (service power supply to the PLC) is overloaded or
shortcircuited, 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.
The CPU Unit will refresh I/O even in an operation-stopped state (PROGRAM
mode). Therefore, confirm safety when changing output bits allocated to the Sensor
Communications Unit, or words allocated to Special I/O Units or CPU Bus Units in
the CIO Area. Unexpected operation may occur in the loads connected to the Sen-
sor Communications Unit, Special I/O Units, or CPU Bus Units.
• Transferring the contents of the I/O memory areas to the CPU Unit with a Pro-
gramming Device
• Changing the present values with a Programming Device
• Force-setting/force-resetting any bit in memory with a Programming Device
• Transferring the contents of the I/O memory areas to the CPU Unit with a Memory
Card or EM File Memory
• Transferring the contents of I/O memory from another PLC or a host computer on
the network
WARNING

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Precautions for Safe Use
Observe the following precautions when using the Digital Sensor Communications Unit:
●Power Supply
• Take appropriate measures to ensure that the specified power with the rated voltage
and frequency is supplied. Be particularly careful in places where the power supply is
unstable.
• Always turn OFF the power supply to the PLC, Slave Units, and other Units before
attempting any of the following.
• Assembling the Units (Expansion Units)
• Mounting or dismounting terminal blocks on Remote I/O Terminals
• Mounting or dismounting an I/O Unit, CPU Unit, Power Supply Unit, Memory Cas-
sette, or Master Unit
• Replacing component relays
• Setting DIP switches or node address switches
• Connecting or wiring the cables
●Installation
• Before touching the Unit, be sure to first touch a grounded metallic object in order to
discharge any static buildup.
• Be sure that the terminal blocks, communications cables, and other items with locking
devices are properly locked into place.
• Always use the enclosed End Plates to securely mount the Units to the DIN Track.
• Be sure that all the terminal screws and cable connector screws of the product are
tightened to the torque specified in the relevant manuals.
• Be sure that the screws of the terminal block are tightened to the torque specified in
the relevant manuals. Insufficient tightening torque may result in fire, malfunction, or
failure.
• Always use specified communications cables and connectors.
• Abide by the specifications for the communications distance and the number of Units
to be connected.
• When using cables in multiple systems, be sure to keep the distance of 5 mm or more
between any two cables to avoid operational instability due to interference.
●Wiring
• Confirm that the wiring and switch settings are correct before supplying power.
• Use the correct wiring tools to perform wiring.
• Confirm terminal polarity before wiring.
• Do not let a piece of metal enter the Units when wiring or installing.
• Be careful of the following when wiring communications cables.
• Keep communications cables away from power lines and high-voltage lines.
• Do not fold over communications cables.
• Abide by the specifications for the communications cable distance.
• Do not place objects on top of communications cables.
• Always wire communications cables through a duct.
●Handling
Precautions for Safe Use

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Precautions for Safe Use
• Do not forcibly bend or pull the cables.
• Check the user program for proper execution before actually running it on the Unit.
• Confirm that no adverse effect will occur in the system before attempting any of the
following.
• Changing the operating mode of the PLC
• Force-setting/force-resetting bits in memory
• Changing the present value or any set value of any word from the user program
• Do not use thinner or similar solvent for cleaning. Use commercial alcohol.
• Use a dedicated packing box to transport the Unit. Avoid excessive shock or vibration
during transportation.
●External Circuits
• Install external breakers and take other safety measures against short-circuiting in
external wiring.

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• Install the Unit properly as shown in this manual. Not doing so may result in a failure
of the Unit.
• Do not install the Sensor Communications Unit in locations subject to the following
conditions:
• Locations subject to direct sunlight
• Locations subject to temperatures or humidity outside the range specified in the
specifications
• Locations subject to condensation as the result of severe changes in temperature
• Locations subject to corrosive or flammable gases
• Locations subject to dust (especially iron dust) or salts
• Locations subject to exposure to water, acid, oil, or chemicals
• Locations subject to shock or vibration
• Be sure to observe the voltage specifications when performing wiring between com-
munications path and power supply, or at I/O crossovers. Wrong wiring may cause a
failure of the Unit.
• Wire the Unit properly as indicated in this manual.
• Use the correct wiring parts to perform wiring.
• Take appropriate and sufficient countermeasures when using the Unit 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
• Do not drop the Digital Sensor Communications Unit or expose it to any excessive
vibration or shock. Doing so may result in damage to the Digital Sensor Communica-
tions Unit or malfunction.
• The CompoNet Communications Unit provides power to the connected Sensors.
Therefore, the operation of the Sensors may become unstable if there are abnormali-
ties in the power supply, such as a drop in the power supply voltage at startup. If Sen-
sor operation is unstable, check the voltage specifications and wiring, and then cycle
the power supply.
Precautions for Correct Use

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Reading This Manual
Reading This Manual
Page Format
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Section 3 CompoNet Communications Specifications
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Section 3
Explicit Message Communications
Explicit Message Communications
Youcan read and write parameters for a sp ecified Sensor Amplifier Unit by sending
CompoNet explicit messages from the master to the Sensor Communications Unit. The
Sensor Communications Unit processes the commands received from the master and
returns responses. CompoNet explicit messages can be used in both I/O Mode 1 and I/O
Mode 2.
Basic Format of Explicit Messages
The basic command and response formats are given below.
Command Format
Destination Node Address
With two hexadecimal bytes, specify the node address of the Unit to which to send the
explicit message (command).
Service Code, Class ID, Instance ID, and Attribute ID
These parameters specify the command code, processing target, and processing
details.
With this Sensor Communications Unit, specify the Sensor unit number of the Sensor
Amplifier Unit for which the command is intended as the Instance ID.
The specified numbers of bytes for the class ID, instance ID, and attribute ID depend on the master.
When a message is sent from an OMRONCompoNet Master Unit, specify the class ID and instance
ID in two bytes (four digits), and the attribute ID in one byte (two digits).
Write Data: This is not required for a read command.
Response Format
•Normal
•Error
Number of Received Bytes
The number of bytes of data received from the source node address is returned in
hexadecimal.
Source Network Address
The node address of the node that sent the commandis returned in hexadecimal.
Destination network address Service code Class ID Instance ID Service data
Attribute ID (Write Data)
Number of received bytes Source network address Service code Data
Number of received bytes Source network address Service code Error code
Header
Overview of section
Lower-level header
Title of each section
Page tab
Supplementary Explanation
Helpful information regarding operation and reference pages are
introduced here using symbols.
Overview of
lower-level section
Explanation of options
Gives the section
number and title.

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Reading This Manual
■Meaning of Symbols
Menu items that appear on the seven-segment display on the Amplifier Units are
enclosed in brackets [ ].
■Visual Aids
Indicates points that are important to achieve the full product performance, such as operational pre-
cautions and application procedures.
Indicates pages where related information can be found.
Indicates information helpful in operation.

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Contents
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Introduction
Section 1 Section 2 Section 3 Section 4 Section 5 ëÊ 6èÕ ëÊ 7èÕ
Contents
Safety Precautions 5
Precautions for Safe Use 7
Precautions for Correct Use 9
Reading This Manual 10
Page Format 10
Contents 13
Overview 17
Features and System Configuration 18
Overview 18
Features 19
System Configuration 20
Installation and Connections 21
Specifications and Dimensions 22
Specifications 22
Dimensions 24
Connecting Sensor Amplifier Units 26
Connectable Sensor Amplifier Units 26
Number of Connectable Sensor Amplifier Units 27
Sensor Amplifier Unit Connection and Identification (Unit Numbers) 29
Installation 30
Installation Procedure 30
Removal Procedure 31
CompoNet Communications Specifications 33
Overview of the Sensor Communications Unit with CompoNet Communications 34
Overview 34
Overview of CompoNet Communications 35
Remote I/O Communications Application Example 37
Explicit Message Communications Application Example 38
Part Names 39

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Introduction
Part Names and Functions 39
Operating Procedure 41
Operating Procedure 41
CompoNet Remote I/O Communications 42
Assigning Data in the Master 42
Explicit Message Communications 49
Basic Format of Explicit Messages 49
Read and Write Commands 51
Operation Execution Commands 56
Error Codes 59
Explicit Message Functions Application Example 60
Using the Distributed Sensor Unit 63
Models of Sensor Amplifier Units Connectable to a Distributed Sensor Unit 64
Mounting and Removing Distributed Sensor Units 65
Installation Procedure 65
Removal Procedure 66
Installing a DS-Bus Network 67
Precautions for Installing a DS-Bus Network 67
Preparing to Install the Network 68
Connecting the Communications Cables and Connectors 69
Distributed Sensor Unit Power Supply Specifications and Connections 71
Precautions on Supplying Unit Power 71
Unit Power Supply Specifications 71
Connecting the Unit Power Supply 72
General Specifications of the Distributed Sensor Unit 73
Hardware Specifications of the Distributed Sensor Unit 74
Status Indicators 74
Unit Address Setting Switch 75
DS-Bus Network Termination Setting Switch 76
Communications and Power Supply Connector 77

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Appendices 79
Command Descriptions and Data Formats 80
Command Response Time (Reference Values) 94
Troubleshooting 95
CompoNet Device Profile 97
Device Profile 97
Revision History 98

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Introduction
MEMO

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Section 1 Overview
Section 1
Overview
Features and System Configuration 18
Overview 18
Features 19
System Configuration 20

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Features and System Configuration
Features and System Configuration
Overview
The Sensor Communications Unit is a communications slave that is used to monitor
Sensor Amplifier Unit ON/OFF outputs and detection levels, write parameters, and perform
operations between Digital Sensors and a PLC with CompoNet communications.
ON/OFF outputs can be monitored with remote I/O communications. Also, parameters can
be read and written with explicit messages.