ExxonMobil, Honeywell Discuss 50 Years of Distributed Control System Evolution

In a recent episode of Amplified from Control magazine, host Keith Larson interviews Brian Reynolds (Honeywell CTO), Alicia Kempf (Honeywell Director Offering Management), and David Patin (ExxonMobil TDC Modernization Program Lead Engineer). The discussion took place at the 2025 Honeywell User Group meeting, celebrating 50 years since the first Honeywell TDC 2000 installation in 1975.

The conversation traces the evolution of distributed control systems from centralized cabinet rooms in the 1970s-80s to today's truly distributed architecture with Universal IO and virtualization. Key developments include automated device commissioning, which reduced loop checks from hours to minutes, and the ability to modernize legacy systems on-process without shutdowns.