1 Overview
1-2
CJ2 CPU Unit Software User’s Manual
1-1 Overview of CJ2 CPU Units
The SYSMAC CJ2-series CPU Units are multi-functional CPU Units that provide the following features.
z Fast, with Large Memory Capacity
Basic performance is faster and memory capacity has been increased to provide ample capability
for machine control.
z Built-in EtherNet/IP Port (CJ2H-CPU6@-EIP and CJ2M-CPU3@ Only)
The CJ2 CPU Units support the EtherNet/IP open network as a standard feature. Universal Ethernet
communications, such as data links between PLCs, message communications between PLCs, and
FTP transfers, are all possible from a peripheral device connection.
z General-purpose Networks for Support Software Interface
Support Software and devices can be easily connected using commercially available cable to gen-
eral-purpose networks via USB and EtherNet/IP ports. (The EtherNet/IP port is provided only on the
CJ2H-CPU6@-EIP and CJ2M-CPU3@.)
z Tag Access (CJ2H-CPU6@-EIP and CJ2M-CPU3@ Only)
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.
z Synchronous Unit Operation (CJ2H CPU Units with Unit Version 1.1 or Later)
The timing of processing performed by CPU Bus Units and Special I/O Units can be synchronized.
This minimizes fluctuations in timing from input and processing to outputs, making it easier to ensure
application performance.
z Easier Programming
CJ2 CPU Units offer a highly readable programming environment, including features such as
addressing DM and EM Area bits, setting address offsets, and using array variables.
z Improved Debugging
Online editing and data tracing have been improved, greatly increasing the efficiency of debugging.
z Increased Pulse I/O Capacity (CJ2M CPU Unit with Unit Version 2.0 or Later)
With the CJ2M CPU Units, optional Pulse I/O Modules can be mounted to enable pulse I/O for up to
four axes.
z More Serial Communications Ports (CJ2M-CPU3@ Only)
With the standard CJ2M CPU Unit (CJ2M-CPU3@), you can add an RS-232C or RS-422A/485
Option Board to the standard-feature EtherNet/IP port to increase the number of serial communica-
tions ports.
1-1-1 Overview
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