Omron CPU Unit CJ2 User Manual

Programmable Automation Controllers

CJ2SERIES

Introducing the Flagship CJ2 CPU Units, with Built-in
Multifunctional EtherNet Port

Built-in EtherNet/IP ports

Tag based programming

Fast processing time

Large memory capacity
Fully compatible with CJ1 modules

CJ2 – Omron’s New Small, Fast & Flexible
Modular Flagship PAC, with built-in
EtherNet/IP and Tag Based Programming

The CJ2 Programmable Automation Controller (PAC) delivers PAC features and capabilities as

defined by ARC Advisory Group in Omron’s popular, compact modular CJ PLC platform.

Multi-domain functionality – CJ2 performs logic, motion, HMI and process control on a single platform.
Single multi-discipline development platform - Using a common tag database, PAC and HMI

programming can be developed in parallel, reducing development time. Omron’s CJ2 PAC, NS-Series
HMI’s and middleware all share the same tag database. CX-One Software incorporates 16 different
development tools.

Software tools that allow access across several machines - Omron’s CJ2 PACs supports Single

Point Multiple Access (SPMA) which enables set-up and programming of all local modules and remotely
networked modules.

Open, modular architecture - Omron’s CJ2 supports the capability to handle logic, position & motion

control, RFID, analog and temperature control, HMI, bar code, networking modules, communication
modules, smart sensors, vision and drives, all in a single modular platform.

Standardized Programming & Open Networks - Omron’s CJ2 supports all IEC61131-3 programming

languages: Ladder, Function Block, Structured Text, Sequential Function Chart (SFC) and Instruction List.
Open networks enable seamless communications using these protocols: Ethernet, EtherNet/IP, DeviceNet,
CompoNet, PROFIBUS, PROFINET, FLNet, MECHATROLINK-II and Serial (RS-232C, RS-422, RS-485).

CJ2 CPU’s – Offer built-in EtherNet/IP networking, High-speed, high-capacity data exchange between

PAC’s, PLC’s, HMI’s and I/O devices. EtherNet/IP can be used to perform both information and control
Networking, share up to 184,832 words over 256 nodes. CJ2 PAC’s can easily connect to Rockwell’s
ControlLogix and CompactLogix PLC’s using EtherNet/IP tag data links.

2

Key Features and Benefits

Large Memory Capacity –

The CPU program memory capacity has been
increased up to 400K Steps, DM has increased
up to 800K while Function Block Program,
Symbol, Comment Memory has increased to

3.5MB. Large memory allows for larger more
versatile programs, well documented programs
makes it easier and faster to troubleshoot.

Fast –

Processing times are significantly faster. Faster
production, faster development time, faster time
to market and higher throughput means higher
speed applications can be achieved.

One Single Programming

IEC61131-3 Programming –

All 5 programming languages are supported
with the CJ2 PAC. Ladder, Function Block,
Structured Text, Instruction List and Sequential
Function Chart. Hundreds of Pre-built pre-test
Function blocks significantly can reduce design
time. Standard programming languages allow
for fast, flexible and powerful programming.

General-purpose Networks
for Support Software
Interface –

CX-One software applications can be easily
connected using standard USB and EtherNet
Cables via USB and EtherNet/IP ports.

Environment –

CX-One is Omron’s single programming
environment for PAC’s, PLC’s, HMI, Networks,
Process Control, Motion Control and Simulation
Software. Legacy PLC’s are supported and single
click conversion to new hardware makes for easy
migration. The software includes and Update service
that automatically checks for the latest update of
software.

Improved Debugging –

Online editing and data tracing have been
improved, greatly increasing the efficiency of
debugging. The data trace function is built into the
PAC and can monitor & store I/O and data in 1
ms time increments. This allows for easy and faster
debug time, which allows for faster time to market.

Tag Based Programming –

CJ2 CPU Units have a tag name server to
manage tag names and I/O addresses.
This enables access from external devices
using tag names, without needing to know the
I/O addresses.

CJ2 Capabilities –

Offers functions such as motion control, process
control, RFID, Logic and Drives all on the same
controller platform. The modular architecture is
ideal for applications where the user is interested
in saving money by reducing development time &
increasing production.

3

Faster and Higher-capacity CPU Units

High-capacity data memory is in demand to meet the need for quality control for equipment and
products and to provide real-time processing and collection of measurement data. Large program
capacity is also in demand due to the need for improving program reusability through modularization
and structured programming.

Great Expanded Program Capacity and Data Memory Capacity

Ample capacity is provided for the data required for control operations.

The High-capacity CJ2H-CPU68-EIP Is Now Available.

» Program capacity: 400 Ksteps (1.6 times larger than before)
» Data memory capacity: 832 Kwords (2 times larger than before)
» Basic Instructions (0.016 µs)

And, All CJ2 Models Have more Capacity than CJ1 Models.

In addition, all models have more capacity than the equivalent CJ1­series models to meet needs for structured programming and increasing
amounts of data.

Increased Capacity over CJ1-series CPU Units

Program capacity

400 Ksteps

CJ2-H

250 Ksteps

NEW

CPU68-EIP

CJ1 Product Lineup

150 Ksteps

CPU66-EIP

100 Ksteps

CPU65-EIP

50 Ksteps

CPU64-EIP

30 Ksteps

64 Kwords 160 Kwords 352 Kwords 448 Kwords 512 Kwords 832 Kwords

Program capacity: 400 Ksteps
Data memory capacity: 832 Kwords

4

CPU67-EIP

Data memory capacity

High-speed System I/O Throughput

NEW

Improved basic performance enables fl exible
machine control.

Ample Instruction Execution Performance
for Machine Control

The CJ2 Series fully responds to customer
requests for improvement and
increased information.

» System Overhead

Common processing 200 µs
Interrupt response: 30 µs

» Basic Instructions

LD instruction execution: 0.016 µs
OUT instruction execution: 0.016 µs

» Floating-point Math

SIN calculation: 0.59 µs
Floating-point decimal addition and
subtraction: 0.24 µs

Faster I/O Refreshing Using the Burst

2.4

2.4

Times

X

800 µs

Transfer Method

I/O refreshing between an EtherNet/IP Unit and
the CPU Unit is now performed at high speed
using the even faster and higher-capacity data
links for EtherNet/IP. This method is standard
for the CJ2 CPU Units. I/O refreshing is now
performed at up to 2.4 times the speed of
previous Communications Units.

I

/O refresh speed

(for 1,000 words)

CJ2

CJ1

330µs

Burst transfer

High-speed, high-capacity

20

Faster Immediate I/O Refreshing

Times

Immediate refreshing of basic I/O is also faster.
Real-time inputs and outputs while instructions
are being executed are up to 20 times faster
than before.

(Example: !LD instruction speed improved from 20 µs to 1 µs)

Air cylinder

Fiber Sensor
E3X-DA

Sensor status is read
just prior to instruction
execution.

CJ2 CPU

Output immediately
after instruction is
executed

Automatic User Memory Recovery

Finer memory production processes have been
accompanied by problems such as bit corruption
caused by cosmic rays. With the CJ2 CPU Units,
corruption in the user program is detected and the
program recovered in real time before program
execution. This reduces equipment down time by
minimizing the number of times that operation is
stopped due to memory errors.

Cosmic rays

User program

data is corrupted

Previously

Operation is stopped due
to memory error.

EtherNet/IP

» I/O Refreshing

16-point Basic I/O Unit: 1.4 µs
8-point Analog Input Unit: 50 µs

Cosmic rays

(Thermal neutrons)

CJ2

User program

data is corrupted

Data is automatically
restored and normal
operation continues.

5

Networks Are More Open

EtherNet/IP is an open network that uses the TCP/IP protocol on EtherNet networks, which are widely used
in offi ces and factories throughout the world. The CJ2 CPU Units support EtherNet/IP as a standard feature.
Because EtherNet/IP uses TCP/IP, it provides the many advantages of EtherNet technology.

Universal EtherNet and FA Data Links Can Be Used at the Same Time.

NEW

With EtherNet/IP, One Port Is Enough.

FTP Communications, Data Links, and Support Software Can Be Used Simultaneously through
a Single Port.

The CJ2 CPU Units provide as standard equipment a multifunctional EtherNet port that supports EtherNet/
IP. There is no need to add an EtherNet Unit, because universal EtherNet communications, such as data links
between PAC’s, message communications between PAC’s, and FTP transfers, are all enabled simultaneously
through this one port while Support Software is connected.

Programmable Terminal

Host application

EtherNet/IP

HUB

Message

communications

CJ2 CPU

Message

communications

Data links

CJ2 CPU CJ1-EtherNet/IP Unit

FTP

Data links

CX-One

Create a Seamless Data Flow in a Single Network System.

Because it is based on the world-standard CIP open protocol, a seamless data fl ow can be achieved between
control lines and information monitoring lines in a single network system. From here on, EtherNet/IP will be
increasingly used in multi-vendor environments (such as robotics and safety devices).

EtherNet/IP is an industrial network that uses the CIP real-time protocol in the EtherNet
application layer. (Standards: EN 50170 and IEC 61158)

Application
Layer

Transport
Layer

Network
Layer

Data Link
Physical Layer

FTP HTTP SMTP SNMP FINS

Explicit
Messages

OSPF

ARP RARP

TCP UDP

IGRP

IEEE 802.3 EtherNet

CIP

ICMP IGMP

IP

Rea l-ti me Dat a
Links

6

Extremely Fast and High-capacity Data

NEW

Links Compared to Previous FA Networks

Large Data Transfers with High Reliability.

30

High-speed and High-capacity

Times

9

Times

Data Links

From manufacturing recipes and information
on interlocks between processes to production
data, any type of data can be exchanged
at high speed and at the optimal timing.
Communications performance is vastly
improved over OMRON’s Controller Link and
FL-net networks.

Data Link
Capacity (Total)

Data Link
Performance

(See note.)

EtherNet/IP

Controller Link

FL-net(OMRON)

EtherNet/IP

Controller Link

Note: Communications cycle time for 20,000 words

20,000 words

8,704 words

10ms 30X

180,000 words…

300ms

9X

Peripheral Devices (such as Cables, Hubs, and
Wireless Devices) Can Be Used With Universal
EtherNet Technology.

NEW

Automatic Address Allocation Is Expanded
to Up to 240 Kwords, Enabling Allocation of
Large Amounts of Data.

The memory size of the EM Area for automatic
address allocation in CX-Programmer symbol tables
has been expanded to a maximum of 240 Kwords.
When a tag is automatically allocated, data link
design and access from the host are enabled with
no need to be conscious of addresses. Moreover,
bits can be force-set/reset in the areas in which
data is automatically allocated.

EtherNet/IP

Tag access

CJ2 CPU Unit

Tags are automatically
allocated to the high­capacity EM Area.

Designing requires tag
names only, with no need to
worry about addresses.

The convenience of a global standard at your
fi ngertips.

» Using Universal EtherNet Reduces Network

Installation and Wiring Costs.
» FA Wireless LAN Makes Mobile Control Easy,

with No Need for Rewiring when
Changing Layout.

Built-in EtherNet/IP port on CPU Units
(multifunctional EtherNet port)

Host application

Easy Monitoring with Excel

CX- Reporter

PAC Access with Visual Basic/C#.NET

CX- Compolet

Switching hub

FA wireless
LAN WE70

Support Software

PLC
CJ1 or CJ2 CPU Unit

Data Links

FINS Messaging

CIP Messaging

FTP

Time Coordination

Programmable
Terminal NS Series

Tag Access

or

7

No Need for Memory Map Control.

The CJ2 CPU Units introduce a new feature called tag access, to reduce your TCO (Total Cost of Ownership)
for systems that use Programmable Terminals, multiple PAC’s, and host applications. Tags allow freedom from
memory maps.

Simultaneous Development Takes the Stress Out of Short Deadlines.

NEW

No Need for Address Allocation Adjustments in Post-processing.

The various Controllers do not depend on addresses, so parallel development at each Controller is enabled
by first simply determining the tag names. There is no need for subsequent address allocation.

Example: Programmable Terminal and CJ2 Development

Previously

Case 1

Case 2

CJ2
By simply setting tag names, PAC and
Programmable Terminal programming
can be performed in parallel.

The PLC program is first
created, and then the ladder
program is referenced to
create the screens.

The screen graphics are
created in advance, and
then addresses are allocated
and checked after the ladder
program is completed.

Tag name
Number_produced
Production_target

Ladder program is created.

Ladder program is created.

Programmable Terminal screens are

created (graphics only).

Address
Undetermined
Undetermined

Ladder program is created.

Addresses are determined while
creating the ladder program.

The screens are created

Programmable Terminal screens
are created.

The addresses are set.

Addresses are allocated and
the allocations are checked.

Design time is shortened

» Simultaneous Development for Programmable
Terminal and CJ2 CPU Unit

Programmable Terminal screens can be designed
using tag names defined in the CJ2 CPU Unit. There
is no need to adjust address allocations in post­processing.

» Data Links between CJ2 CPU Units

Simply setting tag names allows development to
proceed simultaneously among multiple designers
and multiple vendors. It is then easy to subsequently
change the sizes of data links.

8

The screens are created with no need
to pay attention to addresses.

» Simultaneous Development for Host Application
and CJ2 CPU Unit

Designing can be carried out simply by setting tag
names in the information section and the control
design section. There is no need for physical ad­dresses in the network interface specifications.

The Ease of Changing Designs Makes It
Simple to Add or Upgrade Equipment.

There is little effect on address changes.
Previously, when data was exchanged by
address specifi cation and addresses were
changed, the program had to be changed at
other Controllers and various operations, such as
memory checks, had to be performed. Now, tag
names eliminate the dependence on a memory
map and the need for checking items affected
by changes. This allows equipment to be easily
added or upgraded.

Programmable Terminal
NS Series

No change required.

Even after the change, the
number of items produced
is acquired correctly from
H200.

Number_produced

CJ2 CPU

Change

With the CX-Programmer, the ad­dress for the tag named “Number
produced” is changed from D100
to H200.

Accessed by tag name

Host application

No change required.

EtherNet/IP

Number_produced

tag name address

Number_produced

Number_produced

D100

H200

Change

Assurance of Quality, Free from Mistakes.

Tags can be shared among the CJ2 CPU Units,
NS-series PTs and Middleware. Tag names can
be shared among controllers that exchange
data using the CX-One or Excel import/export
functions. Because redundant address entry and
address allocation are not needed, checking is
also not required. This makes it easy to construct
high-quality systems.

What is Tag Access?

NEW

A tag is a name given to an address. Tags are
managed in the CJ2 CPU Unit, where they are
defi ned as network symbols. The common user­defi ned tag names are used from Programmable
Terminals and host applications to access memory
in a CJ2 CPU Unit without knowing the actual
memory address.

Programmable Terminal
NS Series

Programmable Terminal screen

Created using tag names.

Number_produced

Number_produced

Data links using tag names

Application

Developed using tag names.

Number_produced

Accessed by tag nameAccessed by tag name

PAC ladder program

Developed using tag names.

Host application

EtherNet/IP

Copy

&

Paste

CX-Programmer symbol table

CX-Programmer symbol tables can
be copied and pasted!

CX-Designer symbol table

CJ2 CPU

Tags are managed in the CJ2 CPU Unit as network symbols.

Symbol Table

Tag name

Number_produced

Production_target

Data link design

Allocated using tag names.

Physical address

D100

D200

CJ2 CPU CJ2 CPU

I/O Memory

Address

D100

D200

Data

&200

&500

9

Connecting Support Software is Now
Easier and Safer.

Using General-purpose Networks for Support Software Interface. Connecting to a USB or EtherNet/IP port is
easy, by commercially available cable used around the world.

Easy Connection by USB

Commercially available cable can be connected to a USB port on the front panel of the CPU Unit.

» Simply Connect the Cable, with No Settings Required.

USB port (standard equipment)

Commercially available USB cable

CX-One (e.g., CX-Programmer)

» A CJ2 CPU Unit on an EtherNet/IP Network Can Be Accessed Via USB, with No Need for Routing Tables.

EtherNet/IP

USB

NEW

CX-One (e.g., CX-Programmer)

10

Easy Connection by EtherNet/IP

NEW

The built-in EtherNet/IP port enables smooth on­site remote debugging and maintenance.

» EtherNet/IP can be easily connected with
simply an IP address.

HUB

192.168.250.13 192.168.250.14 192.168.250.15

EtherNet/IP

» Even if the IP address is not known, it is easy
to connect by searching the PAC’s on the
EtherNet/IP network and selecting from a list.

Prevention of Erroneous Connection
by PAC Name Verifi cation

A user-set PAC name can be recorded in the CPU
Unit. When connecting online to a PAC, it can
be checked whether the project fi le matches the
name of the PAC that is to be connected, making
it possible to connect with confi dence to a PAC
installed in a location that cannot be seen.

CX-Programmer

HUB

Online connection

Erroneous connection is prevented
by checking whether the PAC name
matches when connecting online.

NEW

The PAC name can be easily found by
selecting from the list that is displayed.

PAC name

Equipment_A

PAC name

Equipment_B

PAC name

Equipment_C

11

Easier On-site Debugging

Superior debugging functions reduce the time required for debugging and shorten the total lead time for
system startup and trouble countermeasures.

Stress-free Online Debugging

Effects on machinery operation are reduced.

» The additional cycle time due to Online editing has been reduced to approx. 1 ms
The previous additional cycle time of 8 ms has been shortened to 1 ms.

Previously (CJ1) CJ2

Online editing

CJ1 CPU

Additional time:
Approx.

8 ms

» Unlimited FB and SFC Online Editing
Function blocks and sequential function charts can be edited online with no limitation on program size.

Online editing

CJ2 CPU

Additional time:
Approx.

1 ms

NEW

FB

SFC

FB

FB defi nition

SFC program

Previously (CJ1) CJ2

The size of programs
that could be edited
online was limited to
4 Ksteps.

No limit

12