CJ2 Overview

Although CJ2 is a can directly replace any CJ1 CPU, it offers the following additional significant advantages:

Data communication is via standard Ethernet port with EtherNet/IP Data Link function.

CJ2 units offer multi-axes synchronous control, and can replace expensive motion controllers.

Faster program execution and immediate I/O refreshing enables flexible machine control.

Thanks to the wide variety of CPUs with consistent architecture across all PLC families, you only need to learn one, and you will know them all.

Adapt the PLC to your needs with the wide variety of compatible CJ1 Family I/O units (nearly 100).

Proved track record

The CJ2 Family is based on the highly popular CJ1, which after its launch in 2001 is operating in an extraordinary variety of applications all over the world. Now, as the natural successor, the CJ2 combines that field-proven technology with a wider choice of CPUs, more speed and memory, and a wider variety of communication interfaces.

Faster development

Tag-based communications technology will simplify the interfacing of the PLC to the outside world. On-line debugging improvements also help to accelerate software development so you can change the code and test the results quickly. The added function block memory will allow you improve to program structure and reuse of code even in the the entry-level models.

Talks to all

The CJ2 Family supports major open networking technologies including:
• Ethernet-based communication based on open industrial standards
• Serial communications over RS-232 C, RS-422, RS-485 and USB
• The major open Fieldbus standards
• Fast and accurate motion control networks.

Omron has used its long experience as a specialist machine automation supplier to develop CJ2. The result is an extremely reliable PLC that is also a powerful example of our commitment to continuous improvement.
The CJ2 Family is a major opportunity to innovate and simultaneously reduce cost now and in the future.
It's the obvious choice for modern machine builders.

To stay ahead in the machine-building business, you need to grow with your end-user’s needs. Faster production, better quality control and better traceability require more speed and more memory. That’s why the CJ2 Family offers a wide range of CPUsto suit any task. From 5 Ksteps program capacity and 64 Kwords memory, right up to 500 Ksteps capacity and 832 Kwords.

In addition to the greater CPU processing performance, Omron has also added new high-speed I/O units, such as analog input units with 20 μs conversion time, while new PLC instructions provide immediate access to fast I/O data. The result is even more real-time reliability.

The CJ2M Series is ideal for packaging and general machine automation needs. Connectivity is assured thanks to the built-in USB port and the choice of Ethernet and RS-232C/422/485 interfaces on the CPU.

Pulse I/O modules

By mounting optional pulse I/O modules, you can extend the functionality of any CJ2M CPU with:
- interrupt inputs
- quick-response inputs
- high-speed counters
- incremental encoder inputs
- pulse frequency control outputs
- pulse width control outputs

Up to two modules can be mounted per CPU, allowing direct control of four motion axes. Using dedicated instructions, these axes can be controlled directly by the PLC program, without communication delays.

* Supported by the CJ2M CPU Unit with version 2.0 or later.

The CJ2H Series is ideal for advanced machine automation needs such as those required in image processing inspection of electrical components and high speed sorting on conveyors.