The era of the PLC5 has come to an end. The controller that once served companies well for many years is now obsolete, resulting in costly aftermarket replacement parts, limited capabilities, and downtime challenges. For one of the world’s largest mozzarella cheese producers, the key challenge with their legacy Allen Bradley PLC5 control system centered around its limited memory capacity and, consequently, the inability to handle new data collection and documentation requirements by U.S. Department of Agriculture (USDA). The cheese producer was further challenged to find a system integrator that had technical expertise with the obsolete architecture to leverage their existing automation investment and determine their migration options. Specialized in this matter, Automation Group was engaged to plan and manage the migration to the ControlLogix platform.