Allen-Bradley controllogix 1756-L55M12 - Chapter 1 Introduction

11 Publication 1756-UM001G-EN-P - January 2007
Chapter 1
ControlLogix System Overview
Introduction
This chapter provides an overview of the ControlLogix system. The
ControlLogix system provides sequential, process, motion, and drive
control together with communication and I/O in a chassis-based
system. A simple ControlLogix system consists of a stand-alone
controller and I/O modules in a single chassis.
For a more flexible system, use:
• multiple controllers in a single chassis.
• multiple controllers joined across networks.
• I/O from multiple platforms that is distributed in many locations
and connected over multiple I/O links.
ControlLogix System Overview
ControlLogix Controller
1756 I/O modules in the
Same chassis as the
ControlLogix Controller
Computers
Other Controllers
EtherNet/IP Link
ControlNet Link
1756 I/O Modules in the
Same Chassis as the
ControlLogix Controller
Communication Interface
Modules in the Same
Chassis as the
ControlLogix Controller
Remote I/O Modules
Drives
}
EtherNet/IP Link
ControlNet Link
DeviceNet Link
Universal remote I/O Link
SERCOS Drives
SERCOS Link