Omron CJ1W-CORT21 Operation Manual
Machine Automation Controller
CJ-series
User Defined CAN Unit
Operation Manual
for NJ-series CPU Unit
CJ1W-CORT21
User Defined
CAN Unit
W517-E2-01
Introduction
Thank you for purchasing a CJ-series CJ1W-CORT21 User Defined CAN Unit.
This manual contains information that is necessary to use the CJ-series CJ1W-CORT21 User Defined
CAN Unit for an NJ-series CPU Unit. Please read this manual and make sure you understand the functionality and performance of the NJ-series CPU Unit before you attempt to use it in a control system.
Keep this manual in a safe place where it will be available for reference during operation.
Intended Audience
This manual is intended for the following personnel, who must also have knowledge of electrical systems (an electrical engineer or the equivalent).
• Personnel in charge of introducing FA systems.
• Personnel in charge of designing FA systems.
• Personnel in charge of installing and maintaining FA systems.
• Personnel in charge of managing FA systems and facilities.
For programming, this manual is intended for personnel who understand the programming language
specifications in international standard IEC 61131-3 or Japanese standard JIS B3503.
Introduction
Applicable Products
This manual covers the following products.
CJ-series CJ1W-CORT21 User Defined CAN Unit
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
1
Introduction
NJ-series User’s Manuals
Basic information
Introduction to NJ-series Controllers
Setting devices and hardware
Using motion control
Using EtherCAT
Using EtherNet/IP
Using CJ-series Units
Software settings
Using motion control
Using EtherCAT
Using EtherNet/IP
Programming
Using motion control
Using EtherCAT
Using CJ-series Units
Programming error processing
Testing operation and debugging
Using motion control
Using EtherCAT
Using EtherNet/IP
Maintenance
Using EtherCAT
Using EtherNet/IP
Using CJ-series Units
NJ-series CPU Unit
Hardware User´s Manual
NJ-series CPU Unit
Software User´s Manual
NJ-series Instructions
Reference Manual
NJ-series CPU Unit Motion
Control User´s Manual
NJ-series CPU Unit Built-in
EtherCAT Port User´s Manual
NJ-series Motion Control
Instructions Reference Manual
NJ-series CPU Unit Built-in
EtherNet/IP Port User´s Manual
NJ-series Troubleshooting Manual
CJ-series Special Unit Operation
Manuals for NJ-series CPU Unit
Troubleshooting and managing
errors in an NJ-series Controller
Use the
relevant
manuals for
references
according to
any error that
occurs.
Relevant Manuals
There are three manuals that provide basic information on the NJ-series CPU Units: the NJ-series CPU
Unit Hardware User’s Manual, the NJ-series CPU Unit Software User’s Manual, and the NJ-series
Instructions Reference Manual.
Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Studio Version 1 Operation Manual (Cat. No. W504) for information on the Sysmac Studio.
Other manuals are necessary for specific system configurations and applications.
Read all of the manuals that are relevant to your system configuration and application to make the most
of the NJ-series CPU Unit.
2
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Manual Configuration
NJ-series CPU Unit Hardware User’s Manual (Cat. No. W500)
Section Description
Section 1
Introduction
Section 2
System Configuration
Section 3
Configuration Units
Section 4
Installation and Wiring
Section 5
Troubleshooting
Section 6
Inspection and Maintenance
Appendices
This section provides an introduction to the NJ-series Controllers and their features,
and gives the NJ-series Controller specifications.
This section describes the system configuration used for NJ-series Controllers.
This section describes the parts and functions of the configuration devices in the NJseries Controller configuration, including the CPU Unit and Configuration Units.
This section describes where and how to install the CPU Unit and Configuration Units
and how to wire them.
This section describes the event codes, error confirmation methods, and corrections
for errors that can occur.
This section describes the contents of periodic inspections, the service life of the Battery and Power Supply Units, and replacement methods for the Battery and Power
Supply Units.
The appendices provide the specifications of the Basic I/O Units, Unit dimensions,
load short-circuit protection detection, line disconnection detection, and measures for
EMC Directives.
Introduction
NJ-series CPU Unit Software User’s Manual (Cat. No. W501)
Section Description
Section 1
Introduction
Section 2
CPU Unit Operation
Section 3
I/O Ports, Slave Configuration, and
Unit Configuration
Section 4
Controller Setup
Section 5
Designing Tasks
Section 6
Programming
Section 7
Simulation, Transferring Projects to
the Physical CPU Unit, and Operation
Section 8
CPU Unit Status
Section 9
CPU Unit Functions
Section 10
Communications Setup
Section 11
Example of Actual Application Procedures
Section 12
Troubleshooting
Appendices
This section provides an introduction to the NJ-series Controllers and their features,
and gives the NJ-series Controller specifications.
This section describes the variables and control systems of the CPU Unit and CPU
Unit status.
This section describes how to use I/O ports, how to create the slave configuration
and unit configuration and how to assign functions.
This section describes the initial settings of the function modules.
This section describes the task system and types of tasks.
This section describes programming, including the programming languages and the
variables and instructions that are used in programming.
This section describes simulation of Controller operation and how to use the results
of simulation.
This section describes CPU Unit status.
This section describes the functionality provided by the CPU Unit.
This section describes how to go online with the CPU Unit and how to connect to
other devices.
This section describes the procedures that are used to actually operate an NJ-series
Controller.
This section describes the event codes, error confirmation methods, and corrections
for errors that can occur.
The appendices provide the CPU Unit specifications, task execution times, systemdefined variable lists, data attribute lists, CJ-series Unit memory information, CJseries Unit memory allocation methods, and data type conversion information.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
3
Introduction
Sysmac Studio Version 1 Operation Manual (Cat. No. W504)
Section 1
Introduction
Section 2
Installation and Uninstallation
Section 3
System Design
Section 4
Programming
Section 5
Online Connections to a Controller
Section 6
Debugging
Section 7
Other Functions
Section 8
Reusing Programming
Section 9
Support Software Provided with the
Sysmac Studio
Section 10
Troubleshooting
Appendices
Section Description
This section provides an overview and lists the specifications of the Sysmac Studio
and describes its features and components.
This section describes how to install and uninstall the Sysmac Studio.
This section describes the basic concepts for designing an NJ-series System with the
Sysmac Studio and the basic operating procedures.
This section describes how to create programs with the Sysmac Studio.
This section describes how to go online with a Controller.
This section describes how to debug the programs online on the Controller or debug
it offline with the Simulator.
This section describes Sysmac Studio functions other than system design functions.
This section describes how to reuse the programs that you create with the Sysmac
Studio.
This section describes the Support Software that is provided with the Sysmac Studio.
This section describes the error messages that are displayed when you check a program on the Sysmac Studio and how to correct those errors.
The appendices describe the following:
Driver Installation for Direct USB Cable Connection
Specifying One of Multiple Ethernet Interface Cards
Online Help
Simulation Instructions
CJ-series User Defined CAN Unit Operation Manual for NJ-series
CPU Unit (Cat. No. W517) (This Manual)
Section Description
Section 1
Features and System Configuration
Section 2
Nomenclature and Installation
Section 3
Data Exchange with the CPU Unit
Section 4
Message Communications
Section 5
Communications Timing
Section 6
Troubleshooting and Maintenance
Appendices ---
This section provides an introduction to the User Defined CAN Units and their features. It also describes the operating procedure and the specifications of the User
Defined CAN Units.
This section describes the nomenclature, functionality and installation of the User
Defined CAN Unit.
This section describes the data exchange between the CPU Unit and User Defined
CAN Unit and the definitions of the device variables for CJ-series Unit.
This section describes the message communications of the User Defined CAN Unit.
This section describes the communications timing of the User Defined CAN Unit and
the performances of the remote I/O communications and message communications.
This section describes the troubleshooting procedure, event logs and maintenance
procedure for the User Defined CAN Unit.
4
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Manual Structure
4-9
4 Installation and Wiring
NJ-series CPU Unit Hardware User’s Manual (W500)
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4-3 Mounting Units
The Units that make up an NJ-series Controller can be connected simply by pressing the Units together
and locking the sliders by moving them toward the back of the Units. The End Cover is connected in the
same way to the Unit on the far right side of the Controller.
1 Join the Units so that the connectors fit exactly.
2 The yellow sliders at the top and bottom of each Unit lock the Units together. Move the sliders
toward the back of the Units as shown below until they click into place.
Precautions for Correct UsePrecautions for Correct Use
The sliders on the tops and bottoms of the Powe r 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.
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.
Page Structure
The following page structure is used in this manual.
Introduction
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.
Note References are provided to more detailed or related information.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
5
Introduction
Troubleshooting and Maintenance
Appendices
Communications Timing
6
5
Nomenclature and Installation
Data Exchange with the CPU Unit
Message Communications
4
3
2
1
2
3
4
5
6
A
1
1
I
A
I
Features and System Conguration
Index
Sections in this Manual
6
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
CONTENTS
Introduction............................................................................................................... 1
Relevant Manuals ..................................................................................................... 2
Manual Configuration............................................................................................... 3
Manual Structure ...................................................................................................... 5
Sections in this Manual............................................................................................ 6
CONTENTS ................................................................................................................ 7
Read and Understand this Manual........................................................................ 10
Safety Precautions ................................................................................................. 13
Precautions for Safe Use ....................................................................................... 18
Precautions for Correct Use .................................................................................. 24
Regulations and Standards ................................................................................... 27
Unit Versions........................................................................................................... 29
Related Manuals ..................................................................................................... 31
Revision History ..................................................................................................... 32
Section 1 Features and System Configuration
1-1 User Defined CAN Unit Features ........................................................................................... 1-2
1-2 Overview of CAN Bus ............................................................................................................. 1-5
1-2-1 CAN Communication Protocol ................................................................................................... 1-6
1-2-2 Physical CAN Connection ........................................................................................................ 1-10
1-2-3 Principles of Data Exchange .....................................................................................................1-11
1-2-4 Principles of Non-Destructive Bitwise Arbitration ......................................................................1-11
1-2-5 Efficiency of Bus Allocation ...................................................................................................... 1-12
1-2-6 Message Frame Formats ......................................................................................................... 1-14
1-2-7 Detecting and Signaling Errors ................................................................................................ 1-15
1-2-8 Data Reliability of the CAN Protocol ........................................................................................ 1-17
1-2-9 Extended Format CAN Message ............................................................................................. 1-18
1-2-10 Implementations of the CAN Protocol ......................................................................................1-19
1-2-11 Configuring a CAN Network ..................................................................................................... 1-19
1-3 Specifications ....................................................................................................................... 1-20
1-3-1 User Defined CAN Unit ............................................................................................................ 1-20
1-4 Basic Operating Procedures ............................................................................................... 1-22
1-4-1 Network Installation Procedure ................................................................................................ 1-22
1-4-2 User Defined CAN Unit Startup Procedure .............................................................................. 1-23
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
7
Section 2 Nomenclature and Installation
2-1 Nomenclature and Installation .............................................................................................. 2-2
2-1-1 Nomenclature and Functions .....................................................................................................2-2
2-1-2 Switch Settings ........................................................................................................................... 2-5
2-2 Installing the User Defined CAN Unit .................................................................................... 2-8
2-2-1 System Configuration Precautions .............................................................................................2-8
2-2-2 Mounting ....................................................................................................................................2-8
2-2-3 Handing Precautions ..................................................................................................................2-9
2-2-4 External Dimensions .................................................................................................................. 2-9
2-2-5 Unit States ................................................................................................................................ 2-10
Section 3 Data Exchange with the CPU Unit
3-1 Data Exchange with the CPU Unit ......................................................................................... 3-2
3-1-1 Data Flow ................................................................................................................................... 3-2
3-1-2 Accessing From the User Program ............................................................................................ 3-5
3-2 Device Variable for CJ-series Unit ........................................................................................ 3-8
3-2-1 Enable CAN Communications ....................................................................................................3-8
3-2-2 Status Communication ...............................................................................................................3-9
3-2-3 Number of Delayed Messages .................................................................................................3-12
3-2-4 Number of Received Messages Waiting to be Processed .......................................................3-12
Section 4 Message Communications
4-1 Overview .................................................................................................................................. 4-2
4-1-1 Outline of Message Communications ........................................................................................4-2
4-2 Unit Configuration and Control ............................................................................................. 4-4
4-2-1 Configure Memory Areas (2902) ................................................................................................ 4-4
4-2-2 Configure 11-Bit ID Output Message Buffer (2903) .................................................................4-10
4-2-3 Configure 29-Bit ID Output Message Buffer (2904) .................................................................4-12
4-2-4 Configure 11-Bit ID Input Message Buffer (2905) ....................................................................4-14
4-2-5 Configure 29-Bit ID Input Message Buffer (2906) ....................................................................4-16
4-2-6 Direct Transmit of an 11-bit ID CAN Message (2907) ..............................................................4-17
4-2-7 Direct Transmit of an 29-bit ID CAN Message (2908) ..............................................................4-19
4-2-8 Setting the CAN Bit Rate and Sample Point (2909) ................................................................. 4-21
4-2-9 Error Log Read (2102) .............................................................................................................4-22
4-2-10 Error Log Clear (2103) .............................................................................................................4-23
Section 5 Communications Timing
5-1 Performance ............................................................................................................................ 5-2
5-1-1 I/O Refresh Time ........................................................................................................................5-2
5-1-2 Output Message Evaluation Time .............................................................................................. 5-2
5-1-3 Input Message Processing Time ................................................................................................ 5-4
5-1-4 CAN Interface .............................................................................................................................5-5
5-1-5 I/O Response Time .................................................................................................................... 5-5
5-1-6 Transmission of CAN Messages ................................................................................................5-8
5-1-7 Reception of CAN Messages .....................................................................................................5-9
8
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Section 6 Troubleshooting and Maintenance
6-1 Overview .................................................................................................................................. 6-2
6-1-1 Troubleshooting the User Defined CAN Unit ............................................................................. 6-2
6-2 Troubleshooting with the User Defined CAN Unit Indicators ............................................. 6-4
6-2-1 Run LED Indicator ..................................................................................................................... 6-4
6-2-2 ERR LED Indicator .................................................................................................................... 6-5
6-2-3 Two 7-segment Display ............................................................................................................. 6-5
6-2-4 Two Dot Indicators ..................................................................................................................... 6-6
6-3 Error Log Functions ............................................................................................................... 6-7
6-3-1 Error Log Table .......................................................................................................................... 6-7
6-3-2 Error Codes and Detail Codes ................................................................................................... 6-8
6-3-3 Status Information ...................................................................................................................... 6-8
6-4 Troubleshooting ................................................................................................................... 6-10
6-4-1 CPU Unit’s ERR/ALM Indicator Lit or Flashing ........................................................................ 6-10
6-5 Event Logs ............................................................................................................................ 6-11
6-5-1 Overview of the Event Logs ......................................................................................................6-11
6-5-2 Error Table ............................................................................................................................... 6-12
6-5-3 Error Descriptions .................................................................................................................... 6-12
6-6 Maintenance and Replacement ........................................................................................... 6-16
6-6-1 Cleaning ................................................................................................................................... 6-16
6-6-2 Inspection ................................................................................................................................ 6-16
6-6-3 Replacing Faulty Units ............................................................................................................. 6-17
Appendices
A-1 Differences in Available Functions Depending on the CPU Unit (NJ/CJ-series) to be
Connected ...............................................................................................................................A-2
A-1-1 Differences in Available Functions .............................................................................................A-2
A-1-2 Differences in Accessing from User Program ............................................................................A-2
A-2 User Program Example ..........................................................................................................A-4
Index
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
9
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 NONINFRINGEMENT, 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.
10
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
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.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
11
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.
12
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Safety Precautions
Definition of Precautionary Information
The following notation is used in this manual to provide precautions required to ensure safe usage of an
NJ-series Controller. 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.
Indicates a potentially hazardous situation which, if not avoided,
WARNING
could result in death or serious injury. Additionally, there may be
severe property damage.
Caution
Precautions for Safe Use
Indicates precautions on what to do and what not to do to ensure safe usage of the product.
Precautions for Correct Use
Indicates precautions on what to do and what not to do to ensure proper operation and performance.
Indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury, or property damage.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
13
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.
14
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
WARNING
During Power Supply
Do not touch any of the terminals or terminal blocks while the power is being
supplied. Doing so may result in electric shock.
Do not attempt to take any Unit apart. In particular, high-voltage parts are
present in the Power Supply Unit while power is supplied or immediately
after power is turned OFF. Touching any of these parts may result in electric
shock. There are sharp parts inside the Unit that may cause injury.
Fail-safe Measures
Provide safety measures in external circuits to ensure safety in the system if
an abnormality occurs due to malfunction of the CPU Unit, other Units, or
slaves or due to other external factors affecting operation. Not doing so may
result in serious accidents due to incorrect operation.
Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
The Controller outputs may remain ON or OFF due to deposition or burning
of the output relays or destruction of the output transistors. As a countermeasure for such problems, external safety measures must be provided to
ensure safe operation of the system.
The CPU Unit will turn OFF all outputs from Basic Output Units in the following cases.
• If an error occurs in the power supply
• If the power supply connection becomes faulty
• If a CPU watchdog timer error or CPU reset occurs
• If a major fault level Controller error occurs
• While the CPU Unit is on standby until RUN mode is entered after the
power is turned ON
External safety measures must be provided to ensure safe operation of the
system even if the outputs turn OFF.
If external power supplies for slaves or other devices are overloaded or
short-circuited, the voltage will drop, outputs will turn OFF, and the system
may be unable to read inputs. Provide external safety measures in controls
with monitoring of external power supply voltage as required so that the system operates safely in such a case.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
15
WARNING
Fail-safe Measures
Unintended outputs may occur when an error occurs in variable memory or
in memory used for CJ-series Units. As a countermeasure for such problems, external safety measures must be provided to ensure safe operation of
the system.
Provide measures in the communications system and user program to
ensure safety in the overall system even if errors or malfunctions occur in
data link communications or remote I/O communications.
If there is interference in remote I/O communications or if a major fault level
error occurs, output status will depend on the products that are used.
Confirm the operation that will occur when there is interference in communications or a major fault level error, and implement safety measures.
Correctly set all of the EtherCAT slaves.
The NJ-series Controller continues normal operation for a certain period of
time when a momentary power interruption occurs. This means that the NJseries Controller may receive incorrect signals from external devices that are
also affected by the power interruption. Accordingly, take suitable actions,
such as external fail-safe measures and interlock conditions, to monitor the
power supply voltage of the external device as required.
You must take fail-safe measures to ensure safety in the event of incorrect,
missing, or abnormal signals caused by broken signal lines, momentary
power interruptions, or other causes. Not doing so may result in serious accidents due to incorrect operation.
Voltage and Current Inputs
Make sure that the voltages and currents that are input to the Units and
slaves are within the specified ranges.
Inputting voltages or currents that are outside of the specified ranges may
cause accidents or fire.
16
Downloading
Always confirm safety at the destination before you transfer a user program,
configuration data, setup data, device variables, or values in memory used
for CJ-series Units from the Sysmac Studio. The devices or machines may
perform unexpected operation regardless of the operating mode of the CPU
Unit.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Caution
Application
Do not touch any Unit when power is being supplied or immediately after the
power supply is turned OFF. Doing so may result in burn injury.
Wiring
Be sure that all terminal screws and cable connector screws are tightened to
the torque specified in the relevant manuals. The loose screws may result in
fire or malfunction.
Online Editing
Execute online editing only after confirming that no adverse effects will be
caused by deviations in the timing of I/O. If you perform online editing, the
task execution time may exceed the task period, I/O may not be refreshed
with external devices, input signals may not be read, and output timing may
change.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
17
Precautions for Safe Use
Disassembly and Dropping
• Do not attempt to disassemble, repair, or modify any Units. Doing so may result in malfunction or fire.
• Do not drop any Unit or subject it to abnormal vibration or shock. Doing so may result in Unit malfunction or burning.
Mounting
• The sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O Unit,
and CPU Bus Units must be completely locked (until they click into place) after connecting the adjacent Unit connectors.
Installation
• Always connect to a ground of 100 Ω or less when installing the Units. A ground of 100 Ω or less
must be installed when shorting the GR and LG terminals on the Power Supply Unit.
Wiring
• Follow the instructions in this manual to correctly perform wiring.
Double-check all wiring and switch settings before turning ON the power supply.
• Use crimp terminals for wiring.
Do not connect bare stranded wires directly to terminals.
• Do not pull on the cables or bend the cables beyond their natural limit.
Do not place heavy objects on top of the cables or other wiring lines. Doing so may break the cables.
• Mount terminal blocks and connectors only after checking the mounting location carefully.
• Be sure that the terminal blocks, expansion cables, and other items with locking devices are properly
locked into place.
• Always remove any dustproof labels that are on the top of the Units when they are shipped before
you turn ON the power supply. If the labels are not removed, heat will accumulate and malfunctions
may occur.
• Before you connect a computer to the CPU Unit, disconnect the power supply plug of the computer
from the AC outlet. Also, if the computer has an FG terminal, make the connections so that the FG
terminal has the same electrical potential as the FG (GR) terminal on the Power Supply Unit. A difference in electric potential between the computer and Controller may cause failure or malfunction.
• If the external power supply to an Output Unit or slave has polarity, connect it with the correct polarity.
If the polarity is reversed, current may flow in the reverse direction and damage the connected
devices regardless of the operation of the Controller.
18
Power Supply Design
• Do not exceed the rated supply capacity of the Power Supply Units in the NJ-series Controller. The
rated supply capacities are given in the NJ-series CPU Unit Hardware User’s Manual
(Cat. No. W500).
If the capacity is exceeded, operation may stop, malfunctions may occur, or data may not be backed
up normally for power interruptions.
Use NJ-series Power Supply Units for both the NJ-series CPU Rack and Expansion Racks.
Operation is not possible if a CJ-series Power Supply Unit is used with an NJ-series CPU Unit or an
NJ-series Power Supply Unit is used with a CJ-series CPU Unit.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
• Do not apply voltages or connect loads to the Output Units or slaves in excess of the maximum ratings.
• Surge current occurs when the power supply is turned ON. When selecting fuses or breakers for
external circuits, consider the above precaution and allow sufficient margin in shut-off performance.
Refer to the relevant manuals for surge current specifications. Refer to the NJ-series CPU Unit Hard-
ware User’s Manual (Cat. No. W500) for surge current specifications.
• If the full dielectric strength voltage is applied or turned OFF using the switch on the tester, the generated impulse voltage may damage the Power Supply Unit. Use the adjustment on the tester to gradually increase and decrease the voltage.
• Apply the voltage between the Power Supply Unit's L1 or L2 terminal and the GR terminal when testing insulation and dielectric strength. You do not have to disconnect the LG and GR terminals to perform these tests.
• Do not supply AC power from an inverter or other device with a square-wave output. Internal temperature rise may result in smoking or burning. Always input a sinusoidal wave with the frequency that is
given in the NJ-series CPU Unit Hardware User’s Manual (Cat. No. W500).
• Install external breakers and take other safety measures against short-circuiting in external wiring.
Turning ON the Power Supply
• It takes up to approximately 10 to 20 s to enter RUN mode after the power is turned ON. During that
time, outputs will be OFF or will be the values specified in the Unit or slave settings, and external
communications cannot be performed. Use the RUN output on the Power Supply Unit, for example,
to implement fail-safe circuits so that external devices do not operate incorrectly.
• Configure the external circuits so that the power supply to the control system turns ON only after the
power supply to the Controller has turned ON. If the power supply to the Controller is turned ON after
the control power supply, temporary errors may result in incorrect control system signals because the
output terminals on Output Units may momentarily turn ON when power supply is turned ON to the
Controller.
Actual Operation
• Check the user program, data, and parameter settings for proper execution before you use them for
actual operation.
Turning OFF the Power Supply
• Never turn OFF the power supply to the Controller when the BUSY indicator is flashing. While the
BUSY indicator is lit, the user program and settings in the CPU Unit are being backed up in the builtin non-volatile memory. This data will not be backed up correctly if the power supply is turned OFF.
Also, a major fault level Controller error will occur the next time you start operation, and operation will
stop.
• Do not turn OFF the power supply or remove the SD Memory Card while SD Memory Card access is
in progress (i.e., while the SD BUSY indicator flashes). Data may become corrupted, and the Controller will not operate correctly if it uses corrupted data. To remove the SD Memory Card from the CPU
Unit while the power supply is ON, press the SD Memory Card power supply switch and wait for the
SD BUSY indicator to turn OFF before you remove the SD Memory Card.
• Do not disconnect the cable or turn OFF the power supply to the Controller when downloading data
or the user program from Support Software.
• Always turn OFF the power supply to the Controller before you attempt any of the following.
• Mounting or removing I/O Units or the CPU Unit
• Assembling the Units
• Setting DIP switches or rotary switches
• Connecting cables or wiring the system
• Connecting or disconnecting the connectors
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
19
The Power Supply Unit may continue to supply power to the rest of the Controller for a few seconds
after the power supply turns OFF. The PWR indicator is lit during this time. Confirm that the PWR
indicator is not lit before you perform any of the above.
Operation
• Confirm that no adverse effect will occur in the system before you attempt any of the following.
• Changing the operating mode of the CPU Unit (including changing the setting of the Operating
Mode at Startup)
• Changing the user program or settings
• Changing set values or present values
• Forced refreshing
• Always sufficiently check the safety at the connected devices before you change the settings of an
EtherCAT slave or Special Unit.
• If two different function modules are used together, such as when you use CJ-series Basic Output
Units and EtherCAT slave outputs, take suitable measures in the user program and external controls
to ensure that safety is maintained in the controlled system if one of the function modules stops. The
relevant outputs will stop if a partial fault level error occurs in one of the function modules.
• Always confirm safety at the connected equipment before you reset Controller errors with an event
level of partial fault or higher for the EtherCAT Master Function Module.
When the error is reset, all slaves that were in any state other than Operational state due to a Controller error with an event level of partial fault or higher (in which outputs are disabled) will go to Operational state and the outputs will be enabled.
Before you reset all errors, confirm that no Controller errors with an event level of partial fault have
occurred for the EtherCAT Master Function Module.
• Always confirm safety at the connected equipment before you reset Controller errors for a CJ-series
Special Unit. When a Controller error is reset, the Unit where the Controller error with an event level
of observation or higher will be restarted.
Before you reset all errors, confirm that no Controller errors with an event level of observation or
higher have occurred for the CJ-series Special Unit. Observation level events do not appear on the
Controller Error Tab Page, so it is possible that you may restart the CJ-series Special Unit without
intending to do so.
You can check the status of the _CJB_UnitErrSta[0,0] to _CJB_UnitErrSta[3,9] error status variables
on a Watch Tab Page to see if an observation level Controller error has occurred.
20
Battery Backup
• The user program and initial values for the variables are stored in non-volatile memory in the CPU
Unit. The present values of variables with the Retain attribute and the values of the Holding, DM, and
EM Areas in the memory used for CJ-series Units are backed up by a Battery. If the Battery is not
connected or the Battery is exhausted, the CPU Unit detects a Battery-backup Memory Check Error.
If that error is detected, variables with a Retain attribute are set to their initial values and the Holding,
DM, and EM Areas in memory used for CJ-series Units are cleared to all zeros. Perform thorough
verifications and provide sufficient measures to ensure that the devices perform safe operation for
the initial values of the variables with Retain attributes and the resulting operation.
Debugging
• Forced refreshing ignores the results of user program execution and refreshes I/O with the specified
values. If forced refreshing is used for inputs for which I/O refreshing is not supported, the inputs will
first take the specified values, but they will then be overwritten by the user program. This operation
differs from the force-set/reset functionality of the CJ-series PLCs.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
• You cannot upload or download information for forced refreshing with the Sysmac Studio.
After downloading data that contains forced refreshing, change to RUN mode and then use the
Sysmac Studio to perform the operation for forced refreshing.
Depending on the difference in the forced status, the control system may operate unexpectedly.
• Do not specify the same address for the AT specification for more than one variable.
Doing so would allow the same entity to be accessed with different variable names, which would
make the user program more difficult to understand and possibly cause programming mistakes.
General Communications
• When you use data link communications, check the error information given in the status flags to
make sure that no error has occurred in the source device. Write the user program to use the
received data only if there is no error. If there is an error in the source device, the data for the data
link may contain incorrect values.
• Unexpected operation may result if inappropriate data link tables are set. Even if appropriate data link
tables have been set, confirm that the controlled system will not be adversely affected before you
transfer the data link tables. The data links start automatically after the data link tables are transferred.
• All CPU Bus Units are restarted when routing tables are transferred from Support Software to the
CPU Unit. Restarting these Units is required to read and enable the new routing tables. Confirm that
the system will not be adversely affected by restarting before you transfer the routing tables.
• Tag data links will stop between related nodes while tag data link parameters are transferred during
Controller operation. Confirm that the system will not be adversely affected before you transfer the
tag data link parameters.
EtherNet/IP Communications
• All related EtherNet/IP nodes are reset when you transfer settings for the built-in EtherNet/IP port
(including IP addresses and tag data links settings). This is performed to read and enable the settings. Confirm that the system will not be adversely affected by resetting nodes before you transfer
the settings.
• If EtherNet/IP tag data links (cyclic communications) are used with a repeating hub, the communications load on the network will increase. This will increase collisions and may prevent stable communications. Do not use repeating hubs on networks where tag data links are used. Use an Ethernet
switch instead.
EtherCAT Communications
• Make sure that the communications distance, number of nodes connected, and method of connection for EtherCAT are within specifications.
Do not connect EtherCAT communications to EtherNet/IP, a standard in-house LAN, or other networks. An overload may cause the network to fail or malfunction.
• Malfunctions or unexpected operation may occur for some combinations of EtherCAT revisions of the
master and slaves. If you disable the revision check in the network settings, use the Sysmac Studio
to check the slave revision settings in the master and the actual slave revisions, and then make sure
that functionality is compatible in the slave manuals or other references. You can check the actual
slave revisions from the Sysmac Studio or on slave nameplates.
• After you transfer the user program, the CPU Unit is restarted. Communications with the EtherCAT
slaves are cut off for up to 45 seconds. During that period, the slave outputs behave according to the
slave settings.
Before you transfer the user program, confirm that the system will not be adversely affected.
• If the Fail-soft Operation parameter is set to stop operation, process data communications will stop
for all slaves when an EtherCAT communications error is detected in a slave. For this reason, if
Servo Drives are connected, the Servos for all axes will be turned OFF. Make sure that the Fail-soft
Operation parameter setting results in safe operation when a device error occurs.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
21
• EtherCAT communications are not always established immediately after the power supply is turned
ON. Use the system-defined variables in the user program to confirm that communications are established before attempting control operations.
• If frames sent to EtherCAT slaves are lost due to noise or other causes, slave I/O data is not communicated, and the intended operation is sometimes not achieved. If noise countermeasures are
required, use the _EC_InDataInvalid (Input Data Disable) system-defined variable as an interlock
condition in the user program.
Refer to the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for details.
The slave outputs behave according to the slave settings. Refer to the manuals for the slaves for
details.
• When an EtherCAT slave is disconnected, communications will stop and control of the outputs will be
lost not only for the disconnected slave, but for all slaves connected after it. Confirm that the system
will not be adversely affected before you disconnect a slave.
• If you disconnect the cable from an EtherCAT slave to disconnect it from the network, any current
communications frames may be lost. If frames are lost, slave I/O data is not communicated, and the
intended operation is sometimes not achieved. Perform the following processing for a slave that
needs to be replaced.
Program the _EC_InDataInvalid (Input Data Disable) system-defined variable as an interlock condition.
Set the Impermissible Number of Continuous Timeouts setting in the EtherCAT master to at
least 2.
Refer to the NJ-series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) for details.
Motion Control
• Confirm the axis number carefully before you perform an MC Test Run.
• The motor is stopped if communications are interrupted between the Sysmac Studio and the CPU
Unit during an MC Test Run. Connect the communications cable between the computer and CPU
Unit securely and confirm that the system will not be adversely affected before you perform an
MC Test Run.
• Always execute the Save Cam Table instruction if you change any of the cam data from the user program in the CPU Unit or from the Sysmac Studio. If the cam data is not saved, the previous condition
will be restored when the power is turned ON again, possibly causing unexpected machine operation.
• The positive drive prohibit input (POT), negative drive prohibit input (NOT), and home proximity input
(DEC) of the Servo Drive are used by the MC Function Module as the positive limit input, negative
limit input, and home proximity input. Make sure that the signal widths for all of these input signals
are longer than the control period of the MC Function Module. If the input signal widths are shorter
than the control period, the MC Function Module may not be able to detect the input signals, resulting
in incorrect operation.
Battery Replacement
• The Battery may leak, rupture, heat, or ignite. Never short-circuit, charge, disassemble, heat, or
incinerate the Battery or subject it to strong shock.
• Dispose of any Battery that has been dropped on the floor or otherwise subjected to excessive
shock. Batteries that have been subjected to shock may leak if they are used.
• UL standards require that only an experienced engineer replace the Battery. Make sure that an experienced engineer is in charge of Battery replacement.
• Apply power for at least five minutes before changing the Battery. Install a new Battery within five
minutes (at 25°C) of turning OFF the power supply. If power is not supplied for at least 5 minutes, the
saved data may be lost.
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CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Unit Replacement
• We recommend replacing the Battery with the power turned OFF to prevent the CPU Unit’s sensitive
internal components from being damaged by static electricity and to prevent malfunctions. The Battery can be replaced without turning OFF the power supply. To do so, always touch a grounded piece
of metal to discharge static electricity from your body before you start the procedure.
After you replace the Battery, connect the Sysmac Studio and clear the Low Battery Voltage error.
• Make sure that the required data, including the user program, configurations, settings, variables, and
memory used for CJ-series Units, is transferred to a CPU Unit that was replaced and to externally
connected devices before restarting operation.
Be sure to include the routing tables, network parameters, and other CPU Bus Unit data, which are
stored in the CPU Unit.
Disposal
• Dispose of the product and Batteries according to local ordinances as they apply.
• The following information must be displayed for all products that contain primary lithium batteries with
a perchlorate content of 6 ppb or higher when shipped to or transported through the State of California, USA.
Perchlorate Material - special handling may apply.
See www.dtsc.ca.gov/hazardouswaste/perchlorate.
• The CPU Unit contains a primary lithium battery with a perchlorate content of 6 ppb or higher. Place
the above information on the individual boxes and shipping boxes when shipping finished products
that contain a CPU Unit to the State of California, USA.
Using the User Defined CAN Units
• When adding a new node to the network, make sure that the baud rate is the same as other nodes.
• Use specified communications cables.
• Do not extend connection distances beyond the ranges given in the specifications.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
23
Precautions for Correct Use
Storage, Mounting, and Wiring
• Do not operate or store the Controller in the following locations. Operation may stop or malfunctions
may occur.
• Locations subject to direct sunlight
• Locations subject to temperatures or humidity outside the range specified in the specifications
• Locations subject to condensation as the result of severe changes in temperature
• Locations subject to corrosive or flammable gases
• Locations subject to dust (especially iron dust) or salts
• Locations subject to exposure to water, oil, or chemicals
• Locations subject to shock or vibration
• Take appropriate and sufficient countermeasures when installing the Controller in the following locations.
• Locations subject to strong, high-frequency noise
• Locations subject to static electricity or other forms of noise
• Locations subject to strong electromagnetic fields
• Locations subject to possible exposure to radioactivity
• Locations close to power lines
• Before touching a Unit, be sure to first touch a grounded metallic object in order to discharge any
static build-up.
• Install the Controller away from sources of heat and ensure proper ventilation. Not doing so may
result in malfunction, in operation stopping, or in burning.
• An I/O bus check error will occur and the Controller will stop if an I/O Connecting Cable’s connector is
disconnected from the Rack. Be sure that the connectors are secure.
• Do not allow foreign matter to enter the openings in the Unit. Doing so may result in Unit burning,
electric shock, or failure.
• Do not allow wire clippings, shavings, or other foreign material to enter any Unit. Otherwise, Unit
burning, failure, or malfunction may occur. Cover the Units or take other suitable countermeasures,
especially during wiring work.
• For EtherCAT and EtherNet/IP, use the connection methods and cables that are specified in the NJ-
series CPU Unit Built-in EtherCAT Port User’s Manual (Cat. No. W505) and the NJ-series CPU Unit
Built-in EtherNet/IP Port User’s Manual (Cat. No. W506). Otherwise, communications may be faulty.
• Use the rated power supply voltage for the Power Supply Units. Take appropriate measures to
ensure that the specified power with the rated voltage and frequency is supplied in places where the
power supply is unstable.
• Make sure that the current capacity of the wire is sufficient. Otherwise, excessive heat may be generated. When cross-wiring terminals, the total current for all the terminals will flow in the wire. When
wiring cross-overs, make sure that the current capacity of each of the wires is not exceeded.
• Do not touch the terminals on the Power Supply Unit immediately after turning OFF the power supply.
Residual voltage may cause electrical shock.
• If you use reed switches for the input contacts for AC Input Units, use switches with a current capacity of 1 A or greater.
If the capacity of the reed switches is too low, surge current may fuse the contacts.
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CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Error Processing
• In applications that use the results of instructions that read the error status, consider the affect on the
system when errors are detected and program error processing accordingly. For example, even the
detection of a minor error, such as Battery replacement during operation, can affect the system
depending on how the user program is written.
Unit Replacement
• If you replace a CPU Bus Unit or Special I/O Unit, refer to operation manual for the Unit for information on the data required for individual Units and redo the necessary settings.
• The absolute encoder home offset is backed up with a Battery in the CPU Unit.
When you change the combination of the CPU Unit and Servomotor, e.g., when you add or replace a
Servomotor, define home again.
To restore the information without changing the CPU Unit-Servomotor combination, remove the
absolute encoder home offset from the data to restore.
Task Settings
• If a Task Period Exceeded error occurs, shorten the programs to fit in the task period or increase the
setting of the task period.
Motion Control
• Use the system-defined variable in the user program to confirm that EtherCAT communications are
established before you attempt to execute motion control instructions. Motion control instructions are
not executed normally if EtherCAT communications are not established.
• Use the system-defined variables to monitor for errors in communications with the slaves that are
controlled by the motion control function module. Motion control instructions are not executed normally if an error occur in slave communications.
• Before you start an MC Test Run, make sure that the operation parameters are set correctly.
• Do not download motion control settings during an MC Test Run.
EtherCAT Communications
• Do not disconnect the EtherCAT slave cables during operation. The outputs will become unstable.
• Set the Servo Drives to stop operation if an error occurs in EtherCAT communications between the
Controller and a Servo Drive.
Battery Replacement
• Be sure to install a replacement Battery within two years of the production date shown on the Battery
label.
• Turn ON the power after replacing the Battery for a CPU Unit that has been unused for a long time.
Leaving the CPU Unit unused again without turning ON the power even once after the Battery is
replaced may result in a shorter Battery life.
• When you replace the Battery, use the CJ1W-BAT01 Battery Set.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
25
SD Memory Cards
• Insert the SD Memory Card all the way.
• Do not turn OFF the power supply to the Controller during SD Memory Card access. The files may be
corrupted.
If there is a corrupted file in the SD Memory Card, the file is automatically deleted by the restoration
function when the power supply is turned ON.
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CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
Regulations and Standards
Conformance to EC Directives
Applicable Directives
• EMC Directives
• Low Voltage Directive
Concepts
EMC Directive
OMRON devices that comply with EC Directives also conform to the related EMC standards so that
they can be more easily built into other devices or the overall machine. The actual products have
been checked for conformity to EMC standards.*
Whether the products conform to the standards in the system used by the customer, however, must
be checked by the customer. EMC-related performance of the OMRON devices that comply with EC
Directives will vary depending on the configuration, wiring, and other conditions of the equipment or
control panel on which the OMRON devices are installed. The customer must, therefore, perform
the final check to confirm that devices and the overall machine conform to EMC standards.
* Applicable EMC (Electromagnetic Compatibility) standards are as follows:
EMS (Electromagnetic Susceptibility): EN 61131-2 and EN 61000-6-2
EMI (Electromagnetic Interference): EN 61131-2 and EN 61000-6-4 (Radiated emission: 10-m regulations)
Low Voltage Directive
Always ensure that devices operating at voltages of 50 to 1,000 VAC and 75 to 1,500 VDC meet the
required safety standards. The applicable directive is EN 61131-2.
Conformance to EC Directives
The NJ-series Controllers comply with EC Directives. To ensure that the machine or device in which
the NJ-series Controller is used complies with EC Directives, the Controller must be installed as follows:
• The NJ-series Controller must be installed within a control panel.
• You must use reinforced insulation or double insulation for the DC power supplies connected to
DC Power Supply Units and I/O Units.
• NJ-series Controllers that comply with EC Directives also conform to the Common Emission Standard (EN 61000-6-4). 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 show means of reducing noise.
1 Noise from the communications cable can be reduced by installing a ferrite core on the commu-
nications cable within 10 cm of the User Defined CAN Unit.
CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
27
Ferrite Core (Data Line Filter): 0443-164151 (manufactured by
Fair-Rite Products Co., Ltd.)
Impedance specifications
25 MHZ: 156 Ω
100 MHZ: 250 Ω
30 mm
13 mm
29 mm
33 mm
[Contact]
Nisshin Electric Co., Ltd.
2 Wire the control panel with as thick and short electric lines as possible and ground to 100 Ω min.
3 Keep communication cables as short as possible and ground to 100 Ω min.
Trademarks
• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan
and other countries for OMRON factory automation products.
• Windows, Windows 98, Windows XP, Windows Vista, and Windows 7 are registered trademarks of
Microsoft Corporation in the USA and other countries.
•EtherCAT® is a registered trademark of Beckhoff Automation GmbH for their patented technology.
• The SD logo is a trademark of SD-3C, LLC.
• CAN Protocol is developed by Robert Bosch GmbH and protected by patents.
• SAE is the trademark of The Society of Automotive Engineers.
• CiA is the trademark of CAN in Automation(CiA), CiA is the international users’ and manufacturers’
organization that develops and supports CAN-based higher-layer protocols.
Other company names and product names in this document are the trademarks or registered trademarks of their respective companies.
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CJ-series User Defined CAN Unit Operation Manual for NJ-series CPU Unit (W517)
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