Omron CJ2 - Basic System Configuration and Devices

2-1
CJ2 CPU Unit Hardware User’s Manual
2
This section describes the basic system configuration and devices used in a CJ2 PLC.
The CJ Series supports the following two types of system configuration.
• Basic System Configuration:
System consisting of CPU Rack and Expansion Racks.
• Expanded System Configuration:
System connected via CPU Unit built-in serial port and PLC Units, such as Communi-
cations Units.
2-1 Basic System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-1-1 Basic System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2-1-2 CPU Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
2-1-3 Expansion Racks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
2-1-4 Configuration Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
2-1-5 Calculating Unit Current Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
2-1-6 Calculating Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-20
2-2 Expanded System Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2-2-1 Serial Communications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
2-2-2 Communications Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Basic System Configuration and
Devices