All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in
any form, or by any means, mechanical, electronic, photocopying, recording, or otherwise, without the prior
written permission of OMRON.
No patent liability is assumed with respect to the use of the information contained herein. Moreover, because
OMRON is constantly striving to improve its high-quality products, the information contained in this manual is
subject to change without notice. Every precaution has been taken in the preparation of this manual. 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.
Trademarks
• Sysmac and SYSMAC are trademarks or registered trademarks of OMRON Corporation in Japan and other
countries for OMRON factory automation products.
• Microsoft, Windows, Windows Vista, Excel, and Visual Basic are either registered trademarks or trademarks of
Microsoft Corporation in the United States and other countries.
• EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH, Germany.
• ODVA, CIP, CompoNet, DeviceNet, and EtherNet/IP are trademarks of ODVA.
• The SD and SDHC logos are trademarks of SD-3C, LLC.
Other company names and product names in this document are the trademarks or registered trademarks of their
respective companies.
Copyrights
Microsoft product screen shots reprinted with permission from Microsoft Corporation.
Introduction
Thank you for purchasing an NX-series NX1P2 CPU Unit.
This manual contains information that is necessary to use the NX-series NX1P2 CPU Unit. Please read
this manual and make sure you understand the functionality and performance of the NX-series NX1P2
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 B 3503.
Introduction
Applicable Products
This manual covers the following products.
• NX-series NX1P2 CPU Units
• NX1P2-11
• NX1P2-111
• NX1P2-10
• NX1P2-101
• NX1P2-90
• NX1P2-901
Part of the specifications and restrictions for the CPU Units are given in other manuals. Refer to Rele-vant Manuals on page 7 and Related Manuals on page 19.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Special Information...................................................................................................................................... 9
Precaution on Terminology.......................................................................................................................... 9
Terms and Conditions Agreement ........................................................................10
Warranty, Limitations of Liability ................................................................................................................ 10
9-2-1Checking for Errors and Troubleshooting with the ERR Indicator on Option Boards ................. 9-3
Appendices
A-1 Version Information...............................................................................................................A-2
Index
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
5
CONTENTS
6
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Relevant Manuals
The following table provides the relevant manuals for the NX-series NX1P2 CPU Units. Read all of the
manuals that are relevant to your system configuration and application before you use the NX-series
NX1P2 CPU Unit.
Most operations are performed from the Sysmac Studio Automation Software. Refer to the Sysmac Stu-dio Version 1 Operation Manual (Cat. No. W504) for information on the Sysmac Studio.
Basic information
NX-series NX1P2 CPU Unit
Hardware User’s Manual
Purpose of use
Software User’s Manual
NJ/NX-series CPU Unit
Relevant Manuals
Manual
NX-series NX1P2 CPU Unit
Built-in I/O and Option Board User’s Manual
NJ/NX-series
Instructions Reference Manual
Motion Control User’s Manual
NJ/NX-series CPU Unit
NJ/NX-series
Motion Control Instructions Reference Manual
NJ/NX-series CPU Unit
Built-in EtherCAT Port User’s Manual
Built-in EtherNet/IP Port User’s Manual
NJ/NX-series CPU Unit
NJ/NX-series
Troubleshooting Manual
Introduction to NX1P2 CPU Units
Setting devices and hardware
Using motion control
Using EtherCAT
Using EtherNet/IP
Software settings
Using motion control
Using EtherCAT
Using EtherNet/IP
Using the NX1P2 CPU Unit functions
Writing the user program
Using motion control
Using EtherCAT
Using EtherNet/IP
Programming error processing
Using the NX1P2 CPU Unit functions
Testing operation and debugging
Using motion control
Using EtherCAT
Using EtherNet/IP
Using the NX1P2 CPU Unit functions
Learning about error management and
corrections
Maintenance
*1
Using motion control
Using EtherCAT
Using EtherNet/IP
*1. Refer to the NJ/NX-series Troubleshooting Manual (Cat. No. W503) for the error management concepts and the error
items.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
7
Manual Structure
4-9
4 Installation and Wiring
NJ-series CPU Unit Hardware User’s Manual (W500)
s t i n U g n i t n u o M 3 - 4
4
s t n e n o p m o C r e l l o r t n o C g n i t c e n n o C 1 - 3 - 4
4-3Mounting 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 Use Precautions for Correct Use
4-3-1 Connecting Controller Components
Connector
Hook
Hook holes
Slider
Lock
Release
Move the sliders toward the back
until they lock into place.
Level 1 heading
Level 2 heading
Level 3 heading
Level 2 heading
A step in a procedure
Manual name
Special information
Level 3 heading
Page tab
Gives the current
headings.
Indicates a procedure.
Icons indicate
precautions, additional
information, or reference
information.
Gives the number
of the main section.
The sliders on the tops and bottoms of the Power Supply Unit, CPU Unit, I/O Units, Special I/O
Units, and CPU Bus Units must be completely locked (until they click into place) after connecting
the adjacent Unit connectors.
Manual Structure
Page Structure
The following page structure is used in this manual.
Note This illustration is provided only as a sample. It may not literally appear in this manual.
8
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Precautions for Safe Use
Precautions for Correct Use
Additional Information
Version Information
Special Information
Special information in this manual is classified as follows:
Precautions on what to do and what not to do to ensure safe usage of the product.
Precautions on what to do and what not to do to ensure proper operation and performance.
Manual Structure
Additional information to read as required.
This information is provided to increase understanding or make operation easier.
Information on differences in specifications and functionality for CPU Units with different unit
versions and for different versions of the Sysmac Studio is given.
Note References are provided to more detailed or related information.
Precaution on Terminology
In this manual, “download” refers to transferring data from the Sysmac Studio to the physical Controller
and “upload” refers to transferring data from the physical Controller to the Sysmac Studio.
For the Sysmac Studio, synchronization is used to both upload and download data. Here, “synchronize”
means to automatically compare the data for the Sysmac Studio on the computer with the data in the
physical Controller and transfer the data in the direction that is specified by the user.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
9
Terms and Conditions Agreement
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 warranties, express or implied.
Limitations
OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT
NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF
THE PRODUCTS. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
Omron further disclaims all warranties and responsibility of any type for claims or expenses based
on infringement by the Products or otherwise of any intellectual property right.
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 replacement 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
maintained and not subject to contamination, abuse, misuse or inappropriate modification. Return of
any Products by Buyer must be approved in writing by Omron before shipment. Omron 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 components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in
writing, are not to be construed as an amendment or addition to the above warranty.
See http://www.omron.com/global/ or contact your Omron representative for published information.
Limitation on Liability; Etc
OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR 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.
10
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
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 certification documents identifying ratings
and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. Buyer shall be solely responsible for determining appropriateness of
the 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 OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE
HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS
PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
Terms and Conditions Agreement
Programmable Products
Omron Companies shall not be responsible for the user’s programming of a programmable Product, or
any consequence thereof.
Disclaimers
Performance Data
Data presented in Omron Company websites, catalogs and other materials is provided as a guide for
the user in determining suitability and does not constitute a warranty. It may represent the result of
Omron’s test conditions, and the user must correlate it to actual application requirements. Actual 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 improvements and other
reasons. It is our practice to change part numbers when published ratings or features are changed, or
when significant construction changes are made. However, some specifications of the Product may be
changed without any notice. When in doubt, special part numbers may be assigned to fix or establish
key specifications for your application. Please consult with your Omron’s representative at any time to
confirm actual specifications of purchased Product.
Errors and Omissions
Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
11
Safety Precautions
Safety Precautions
Refer to the following manuals for safety precautions.
• NX-series NX1P2 CPU Unit Hardware User’s Manual (Cat. No. W578)
12
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Precautions for Safe Use
Refer to the following manuals for precautions for safe use.
• NX-series NX1P2 CPU Unit Hardware User’s Manual (Cat. No. W578)
Precautions for Safe Use
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
13
Precautions for Correct Use
Precautions for Correct Use
Refer to the following manuals for precautions for correct use.
• NX-series NX1P2 CPU Unit Hardware User’s Manual (Cat. No. W578)
14
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Regulations and Standards
Refer to the following manuals for regulations and standards.
• NX-series NX1P2 CPU Unit Hardware User’s Manual (Cat. No. W578)
Regulations and Standards
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Hardware revisions and unit versions are used to manage the hardware and software in NX-series
Units and EtherCAT slaves.
The hardware revision or unit version is updated each time there is a change in hardware or software
specifications. Even when two Units or EtherCAT slaves have the same model number, they will have
functional or performance differences if they have different hardware revisions or unit versions.
Checking Versions
You can check versions in the ID information indications on the product or with the Sysmac Studio.
Checking Unit Versions on ID Information Indications
The unit version is given on the ID information indication on the side of the product.
The ID information on an NX-series NX1P2- CPU Unit is shown below.
Note The hardware revision is not displayed for the Unit that the hardware revision is in blank.
Checking Unit Versions with the Sysmac Studio
Checking the Unit Version of a Unit
You can use the Production Information while the Sysmac Studio is online to check the unit version
of a Unit.
You can do this for the CPU Unit, NX Units on the CPU Rack, and Option Boards.
Use the following procedure to check the unit version.
1Right-click CPU Rack under Configurations and Setup - CPU/Expansion Racks in the Multi-
16
view Explorer and select Display Production Information.
The Production Information Dialog Box is displayed.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Versions
2Click the Show Detail or Show Outline Button at the lower right of the Production Information
Dialog Box.
The view will change between the production information details and outline.
Outline ViewDetail View
The information that is displayed is different for the Outline View and Detail View. The Detail View
displays the unit version, hardware version, and software versions. The Outline View displays only
the unit version.
Note The hardware revision is separated by “/” and displayed on the right of the hardware version. The hard-
ware revision is not displayed for the Unit that the hardware revision is in blank.
Checking the Unit Version of an EtherCAT Slave
You can use the Production Information while the Sysmac Studio is online to check the unit version
of an EtherCAT slave. Use the following procedure to check the unit version.
1Double-click EtherCAT under Configurations and Setup in the Multiview Explorer. Or,
right-click EtherCAT under Configurations and Setup and select Edit from the menu.
The EtherCAT Tab Page is displayed for the Controller Configurations and Setup Layer.
2Right-click the master on the EtherCAT Tab Page and select Display Production Information.
The Production Information Dialog Box is displayed.
The unit version is displayed after “Rev.”
Changing Information Displayed in Production Information Dialog Box
1Click the Show Detail or Show Outline Button at the lower right of the Production Information
Dialog Box.
The view will change between the production information details and outline.
Outline ViewDetail View
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
17
Versions
Unit Versions of CPU Units and Sysmac Studio Versions
The functions that are supported depend on the unit version of the NX-series CPU Unit. The version of
Sysmac Studio that supports the functions that were added for an upgrade is also required to use those
functions.
Refer to A-1 Version Information on page A-2 for the relationship between the unit versions of the CPU
Units and the Sysmac Studio versions, and for the functions that are supported by each unit version.
18
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Related Manuals
Related Manuals
The following manuals are related. Use these manuals for reference.
NX-series NX1P2 CPU
Unit Built-in I/O and
Option Board User's
Manual
NJ/NX-series
Instructions Reference
Manual
NJ/NX-series
CPU Unit Motion Control User’s Manual
W578NX1P2-Learning the basic
specifications of
the NX1P2 CPU
Units, including
introductory information, designing,
installation, and
maintenance.
Mainly hardware
information is provided.
W501NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W579NX1P2-Learning about the
W502NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W507NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
Learning how to
program and set
up an
NJ/NX-series CPU
Unit.
Mainly software
information is provided.
details of functions
only for an
NX-series NX1P2
CPU Unit and an
introduction of
functions for an
NJ/NX-series CPU
Unit.
Learning detailed
specifications on
the basic instructions of an
NJ/NX-series CPU
Unit.
Learning about
motion control settings and programming concepts.
An introduction to the entire NX1P2
system is provided along with the following information on the CPU Unit.
• Features and system configuration
• Introduction
• Part names and functions
• General specifications
• Installation and wiring
• Maintenance and inspection
The following information is provided
on a Controller built with an
NJ/NX-series CPU Unit.
• CPU Unit operation
• CPU Unit features
• Initial settings
• Programming based on IEC
61131-3 language specifications
Of the functions for an NX1P2 CPU
Unit, the following information is provided.
• Built-in I/O
• Serial Communications Option
Boards
• Analog I/O Option Boards
An introduction of following functions
for an NJ/NX-series CPU Unit is also
provided.
• Motion control functions
• EtherNet/IP communications functions
• EtherCAT communications functions
The instructions in the instruction set
(IEC 61131-3 specifications) are
described.
The settings and operation of the CPU
Unit and programming concepts for
motion control are described.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
NJ/NX-series
Motion Control Instructions Reference Manual
NJ/NX-series
CPU Unit Built-in EtherCAT® Port
User’s Manual
NJ/NX-series CPU Unit
Built-in EtherNet/IP™
port User’s Manual
NJ/NX-series
Troubleshooting Manual
Sysmac Studio Version
1 Operation Manual
NX-series
EtherCAT® Coupler
Unit
User’s Manual
NX-series
Data Reference Manual
W508NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W505NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W506NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W503NX701-
NX1P2-
NJ501-
NJ301-
NJ101-
W504SYSMAC-
SE2
W519NX-ECC20Leaning how to
W525NX-Referencing lists of
Learning about the
specifications of
the motion control
instructions.
Using the built-in
EtherCAT port on
an NJ/NX-series
CPU Unit.
Using the built-in
EtherNet/IP port
on an
NJ/NX-series CPU
Unit.
Learning about the
errors that may be
detected in an
NJ/NX-series Controller.
Learning about the
operating procedures and functions of the
Sysmac Studio.
use an NX-series
EtherCAT Coupler
Unit and EtherCAT Slave Terminals
the data that is
required to configure systems with
NX-series Units
The motion control instructions are
described.
Information on the built-in EtherCAT
port is provided.
This manual provides an introduction
and provides information on the configuration, features, and setup.
Information on the built-in EtherNet/IP port is provided.
Information is provided on the basic
setup, tag data links, and other features.
Describes concepts on managing
errors that may be detected in an
NJ/NX-series Controller and information on individual errors.
Describes the operating procedures of
the Sysmac Studio.
The following items are described: the
overall system and configuration
methods of an EtherCAT Slave Terminal (which consists of an NX-series
EtherCAT Coupler Unit and NX Units),
and information on hardware, setup,
and functions to set up, control, and
monitor NX Units through EtherCAT.
Lists of the power consumptions,
weights, and other NX Unit data that is
required to configure systems with
NX-series Units are provided.
20
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Learning how to
use NX-series
Safety Control
Units
NA-series PT
pages and object
functions.
Learning how to
use the NS-series
Programmable
Terminals.
Learning about the
screens and object
functions of
NB-series Programmable Terminals.
Learning the specifications and settings required to
install an
NB-series Programmable Terminal and connect
peripheral devices.
communications
functions of E5C
Digital Temperature Controllers
Describes the hardware, setup methods, and functions of the NX Units.
Manuals are available for the following Units.
Digital I/O Units, Analog I/O Units,
System Units, Position Interface Units,
Communications Interface Units, Load
Cell Input Units, and IO-Link Master
Units.
The hardware, setup methods, and
functions of the NX-series Safety
Control Unit are described.
Describes the pages and object functions of the NA-series Programmable
Terminals.
Describes the setup methods, functions, etc. of the NS-series Programmable Terminals.
Describes the screens and object
functions of NB-series Programmable
Terminals.
The procedure for installing the
NB-Designer, an overview of managing the screen data of NB-series Programmable Terminals with the
NBManager, and information on maintenance after operation and troubleshooting are also provided.
Information is provided on NB-series
Programmable Terminal specifications, part names, installation procedures, procedures to connect an
NB-series Programmable Terminal to
peripheral devices, and settings
required after connection to start communications and operations.
Provides an overview of the communications method, communications
specifications, and wiring of E5C
Digital Temperature Controllers.
Related Manuals
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
E5C Digital
Temperature Controllers
User’s Manual
H174E5CLearning about the
functions of E5C
Digital Temperature Controllers
Describes how to use E5C Digital
Temperature Controllers.
22
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Terminology
Terminology
TermDescription
absolute encoder home offsets
array specificationOne of the variable specifications. An array variable contains multiple elements of
ATOne of the attributes of a variable.
axes groupsA functional unit that groups together axes within the Motion Control Function Mod-
Axes Group VariableA system-defined variable that is defined as a structure and provides status infor-
axisA functional unit within the Motion Control Function Module. An axis is assigned to
Axis VariableA system-defined variable that is defined as a structure and provides status infor-
basic data typeAny of the data types that are defined by IEC 61131-3.
cam data variableA variable that represents the cam data as a structure array.
CJ-series UnitAny of the CJ-series Units that can be used with an NJ-series Controller.
Communications Coupler UnitThe generic name of an interface unit for remote I/O communications on a network
ConstantOne of the attributes of a variable.
ControllerThe range of devices that are directly controlled by the CPU Unit.
Controller errorErrors that are defined by the NJ/NX-series System.
Controller eventOne of the events in the NJ/NX-series System. Controller events are errors and
Controller informationInformation that is defined by the NJ/NX-series System that is not an error. It rep-
This data is used to restore in the CPU Unit the actual position of a Servo D rive with
an absolute encoder. The offset is the difference between the command position
after homing and the absolute data that is read from the absolute encoder.
the same data type. The elements in the array are specified by serial numbers
called subscripts that start from the beginning of the array.
This attribute allows the user to specify what is assigned to a variable. An I/O port
or an address in memory used for CJ-series Units can be specified.
ule.
mation and some of the axes parameters for an individual axes group.
An Axes Group Variable is used to specify an axes group for motion control instructions and to monitor the command interpolation velocity, error information, and
other information for the axes group.
the drive mechanism in an external Servo Drive or the sensing mechanism in an
external Encoder Input Slave Unit.
mation and some of the axis parameters for an individual axis.
An Axis Variable is used to specify an axis for motion control instructions and to
monitor the command position, error information, and other information for the axis.
They include Boolean, bit string, integer, real, duration, date, time of day, date and
time, and text string data types.
“Basic data type” is used as opposed to derivative data types, which are defined by
the user.
A cam data variable is an array structure that consists of phases and displacements.
between NX Units and a host network master. For example, an EtherCAT Coupler
Unit is a Communications Coupler Unit for an EtherCAT network.
If you specify the Constant attribute for a variable, the value of the variable cannot
be written by any instructions, ST operators, or CIP message communications.
In the NX-series System, the Con
slaves (including general-purpose slaves and Servo Drives).
In the NJ-series System, the Controller includes the CPU Rack, Expansion Racks,
and EtherCAT slaves (including general-purpose slaves and Servo Drives).
“Controller error” is a collective term for major fault level, partial fault level, minor
fault level, and observation Controller events.
information that are defined by the system for user notification. A Controller event
occurs when the system detects a factor that is defined as a Controller event.
resents an information Controller event.
t
roller includes the CPU Rack and EtherCAT
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
23
Terminology
TermDescription
CPU UnitThe Unit that serves as the center of control for a Machine Automation Controller.
The CPU Unit executes tasks, refreshes I/O for other Units and slaves, etc. The
NJ/NX-series CPU Units include NX701-, NX1P2-, NJ501-,
and NJ301-.
derivative data typeA data type that is defined by the user. Structures, unions, and enumerations are
derivative data types.
deviceA general term for any Unit or slave that is refreshed by the I/O refreshing that is
performed by the CPU Unit. Specifically, it refers to EtherCAT slaves, NX Units on
the CPU Unit, built-in I/O, Option Boards, and CJ-series Units.
device outputAn output for any Unit or slave that is refreshed by the I/O refreshing that is per-
formed by the CPU Unit.
device variableA variable that is used to access a specific device through an I/O port.
downloadTo transfer data from the Sysmac Studio to the Controller with the synchronization
operation of the Sysmac Studio.
edgeOne of the attributes of a variable.
This attribute makes a BOOL variable pass TRUE to a function block when the vari-
able changes from FALSE to TRUE or when it changes from TRUE to FALSE.
enumerationOne of the derivative data types. This data type takes one item from a prepared
name list of enumerators as its value.
enumeratorOne of the values that an enumeration can take expressed as a character string.
The value of an enumeration is one of the enumerators.
EtherCAT Master Function ModuleOne of the function modules. This function module controls the EtherCAT slaves as
the EtherCAT master.
EtherNet/IP Function ModuleOne of the function modules. This function module controls the built-in EtherNet/IP
port.
event logA function that recognizes and records errors and other events.
Event SetupSettings that define user-defined errors and user-defined information.
event taskA task that executes a user program only once when the task execution conditions
are met.
FBAn acronym for “function block.”
forced refreshingForcing the refreshing of an input from an external device or an output to an exter-
nal device, e.g., when the user debugs a program.
Addresses that are subject to forced refreshing can still be overwritten from the
user program.
FUNAn abbreviation for “function.”
functionA POU that is used to create an object that determines a unique output for the
same input, such as for data processing.
function blockA POU that is used to create an object that can have a different output for the same
input, such as for a timer or counter.
function moduleOne of the functional units of the software configuration of the CPU Unit.
g
ene
ral-purpose slaveAny of the EtherCAT slaves that cannot be assigned to an axis.
global variableA variable that can be read or written from all POUs (programs, functions, and func-
tion blocks).
I/O map settingsSettings that assign variables to I/O ports. Assignment information between I/O
ports and variables.
I/O portA logical interface that is used by the CPU Unit to exchange data with an external
device (slave or Unit).
I/O refreshing
informationOne of the event levels for Controller events or user-defined events. These are not
Cyclic data exchange with external devices that is performed with predetermined
memory addresses.
errors, but appear in the event log to notify the user of specific information.
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NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Terminology
TermDescription
Initial ValueOne of the attributes of a variable. The variable is set to the initial value in the fol-
lowing situations.
• When power is turned ON
• When the CPU Unit changes to RUN mode
• When you specify to initialize the values when the user program is transferred
• When a major fault level Controller error occurs
inline STST programming that is included within a ladder diagram program.
instructionThe smallest unit of the processing elements that are provided by OMRON for use
in POU algorithms. There are ladder diagram instructions (program inputs and out-
puts), function instructions, function block instructions, and ST statements.
literalA constant expression that is used in a user program.
local variableA variable that can be accessed only from inside the POU in which it is defined.
“Local variable” is used as opposed to “global variable.”
Local variables include internal variables, input variables, output variables, in-out
variables, and external variables.
main memoryThe memory inside the CPU Unit that is used by the CPU Unit to execute the OS
and user program.
major fault level Controller error
MC Test RunA function to check motor operation and wiring from the Sysmac Studio.
memory used for CJ-series UnitsOne type of I/O memory in an NX1P2 CPU Unit and NJ-series CPU Unit. It contains
minor fault level Controller errorAn error for which part of the control operations for one of the function modules in
Motion Control Function ModuleOne of the function modules. The MC Function Module performs motion control
motion control instructionA function block instruction that executes motion control.
namespaceA system that is used to group and nest the names of functions, function block defi-
Network PublishOne of the attributes of a variable.
NX busThe NX-series internal bus. An NX1P2 CPU Unit has the NX bus.
NX Units
observationOne of the event levels for Controller events or user-defined events.
partial fault level Controller errorAn error for which all of the control operations for one of the function modules in the
PDO communications
An error for which all NJ/NX-series Controller control operations stop. The CPU Unit
immediately stops user program execution and turns OFF the loads for all slaves and
Units (including remote I/O).
addresses that can be directly specified by the user.
It can be accessed only with variables with an AT attribute. This memory is used to
access CJ-series Units and CJ-series networks. However, you cannot connect the
CJ-series Units to the NX1P2 CPU Units.
the NJ/NX-series Controller stop.
The NJ/NX-series CPU Unit continues operation even after a minor fault level Con-
troller error occurs.
based on commands from the motion control instructions that are executed in the
user program.
The Motion Control Function Module supports instructions that are based on func-
tion blocks for PLCopen
cally for the Motion Control Function Module.
nitions, and data types.
This attribute allows you to use CIP message communications or tag data links to
read/write variables from another Controller or from a host computer.
Any of the NX-series Units that perform I/O processing with connected external
devices. The Communications Coupler Units are not included with the NX Units.
These are minor errors that do not affect control operations, but appear in the event
log to notify the user of specific information.
NJ/NX-series Controller stop.
An NJ/NX-series CPU Unit continues operation even after a partial fault level Con-
troller error.
An abbreviation for process data communications. Data is exchanged between the
master and slaves on a process data communications cycle. (The process data com-
munications cycle is the same as the task period of the primary periodic task.)
®
motion control as well as instructions developed specifi-
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
25
Terminology
TermDescription
periodic taskA task for which user program execution and I/O refreshing are performed each
period.
PLC Function ModuleOne of the function modules. This function module executes the user program,
sends commands to the Motion Control Function Module, and provides an interface
to the USB and SD Memory Card.
POUAn acronym for “program organization unit.” A POU is a unit in a program execution
model that is defined in IEC 61131-3.
A POU contains an algorithm and a local variable table and forms the basic unit
used to build a user program.
There are three types of POUs: programs, functions, and function blocks.
primary periodic taskThe task with the highest priority.
process data communicationsOne type of EtherCAT communications in which process data objects (PDOs) are
used to exchange information cyclically and in realtime. Process data communica-
tions are also called PDO communications.
programAlong with functions and function blocks, one of the three types of POUs.
Programs are assigned to tasks to execute them.
Range SpecificationOne of the variable specifications. You can specify a range for a variable in
advance. The variable can take only values that are in the specified range.
RetainOne of the attributes of a variable. The values of variables with a Retain attribute
are held at the following times. (Variables without a Retain attribute are set to their
initial values.)
• When power is turned ON after power interruption
• When the CPU Unit changes to RUN mode
• When you specify to not initialize the values when the user program is transferred
SDO communicationsOne type of EtherCAT communications in which service data objects (SDOs) are
used to transmit information whenever required.
Servo Drive/encoder input slaveAny of the EtherCAT slaves that is assigned to an axis. In the NJ/NX-series Sys-
tem, it would be a Servo Drive or Encoder Input Slave Unit.
slaveA device that performs remote I/O for a master.
slave and Unit configurationsA generic term for the EtherCAT configuration and Unit configuration.
Slave TerminalA building-block remote I/O terminal to which a Communications Coupler Unit and
NX Units are mounted. A Slave Terminal is one type of slave.
Special Unit SetupA generic term for the settings for a Special Unit, including the settings in allocated
DM Area words.
structureOne of the derivative data types. It consists of multiple data types placed together
into a layered structure.
synchronizationA function that automatically compares the information in the NJ/NX-series Control-
ler with the information in the Sysmac Studio, displays any differences and loca-
tions in a hierarchical form, and can be used to synchronize the information.
Sysmac StudioA computer software application for setting, programming, debugging, and trouble-
shooting NJ/NX-series Controllers. It also provides operations for motion control
and a Simulator.
system common processingSystem processing that is performed by the CPU Unit to perform I/O refreshing and
the user prog
tasks, data trace processing, and other processing is performed.
system serviceProcessing that is performed by the CPU Unit in unused time between task pro-
cessing. The system service includes communications processing, SD Memory
Card access processing, self-diagnosis processing, and other processing.
system-defined variableA variable for which all attributes are defined by the system and cannot be changed
by the user.
taskAn attribute that defines when a program is executed.
task periodThe interval at which the primary periodic task or a periodic task is executed.
unionOne of the derivative data types. It allows you to handle the same data as different
data types.
UnitA device that mounts to the CPU Rack or an Expansion Rack.
am execution within a task. Exclusive control of variables between
r
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NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
Terminology
TermDescription
Unit configurationThe configuration information for the Units that are set on the Sysmac Studio. This
information tells what Unit models are connected to the CPU Unit and where they
are connected.
uploadTo transfer data from the Controller to the Sysmac Studio with the synchronization
operation of the Sysmac Studio.
user programAll of the programs in one project.
user-defined eventOne of the events in the NJ/NX-series System. These events are defined by the
user. “User-defined events” is a generic term for user-defined errors and
user-defined information.
user-defined variableA variable for which all of the attributes are defined by the user and can be changed
by the user.
variableA representation of data, such as a numeric value or character string, that is used in
a user program.
You can change the value of a variable by assigned the required value. “Variable” is
used as opposed to “constant,” for which the value does not change.
variable memoryA memory area that contains the present values of variables that do not have AT
specifications. It can be accessed only with variables without an AT attribute.
NX-series NX1P2 CPU Unit Built-in I/O and Option Board User’s Manual (W579)
27
Revision History
W579-E1-04
Revision code
Cat. No.
Revision History
A manual revision code appears as a suffix to the catalog number on the front and back covers of the
manual.