Chapter 1. ControlLogix and CompactLogix Overview and Firmware

In this chapter, we will introduce the ControlLogix and CompactLogix platforms by exploring the evolution of the Allen-Bradley controllers. We will provide details of the Rockwell Automation Integrated Architecture and then finally, we will discuss the important role that firmware plays in the Logix5000 platform. Due to 15 to 20 years of industrial controller life span, it is common to encounter older versions of hardware and firmware, and critical to be familiar with legacy systems.