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Overview Section 1-1
1-1 Overview
The CJ-series PLCs are very small-sized Programmable Controllers that fea-
ture high speed and advanced functions with the same architecture as the
CS-series PLCs.
• Only 90 x 65 mm (H x D) for mounting in small spaces in machines and
on the same DIN Track as components, contributing to machine downsiz-
ing, increased functionality, and modularization.
• Basic instructions executed at 0.02 µs min. and special instructions at
0.06 µs min (for the CJ1-H CPU Units).
• Support the DeviceNet open network and protocol macros (for serial com-
munications) to enable information sharing in machines. Machine-to-
machine connections with Controller Link and host connections with
Ethernet are also supported for even more advanced information sharing,
including seamless message communications across Ethernet, Controller
Link, and DeviceNet networks.
Same Advanced
Performance as CS-
series PLCs
CJ-series PLC
I/O refreshing method selection
PLC Setup functions
Basic instructions: 0.02 µs
Special instructions: 0.06 µs
Same high-speed CPU bus
as CS Series.
Large data memory:
256 Kwords
Program compatibility with
CS-series PLCs
Protocol Macro Function Serves
Multiple Ports
Up to 32 ports can be connected (Serial
Communications Units).
Different Protocol Macros can be allocated to
each port.
Structured Programming
The program is divided into tasks. Symbols
can be used in programming.
The overall performance of the system is im-
proved by executing only the required tasks.
Modification and debugging are simplified.
The program arrangement can be changed.
Step control and block programming instruc-
tions can be used.
Comments can be added to make the pro-
gram easier to understand.
Program
Task
Task
Task
Remote Programming, Monitoring
and Seamless Links between Net-
works
FINS commands allow communications be-
tween nodes in different networks: Ethernet,
Controller Link, and DeviceNet
Remote programming and monitoring can be
performed.
Minimum (fixed) cycle time function
Use Windows tools to create multiple environments in a
single personal computer.
CONTROLLER
CJ1G-CPU44
SYSMAC
PROGRAMMABLE
ERR/ALM
RUN
COMM
INH
PRPHL
OPEN
PERIPHERAL
BUSY
MCPWR
PORT
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
CPU Unit
Memory Card
Other Units
Personal
computer
Programmable
Terminal or
other device
Programming
Console
General-
purpose I/O
device
Full Complement of Versatile Functions
Memory Card and file processing functions
Simplify programs with specialized instructions such as
the table data and text string processing instructions
Troubleshooting functions
Data tracing function
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