Industrial network protocols decide whether a machine talks or stays silent. Chuck from Horner Automation breaks down how they win, fade, and converge.
Chuck has spent 36 years at Horner Automation and lived through what the industry once called the fieldbus wars. Before Horner became known for its all in one controllers, it spent a decade building specialty IO modules for GE Fanuc during the era of DeviceNet, SDS, InterBus S, PROFIBUS, and CANopen. His core argument is that most of those early protocols were technically fine. The ones that became standards won on the commercial weight of the companies backing them, not on superior specifications, with EtherCAT a rare exception that succeeded largely on technical merit.
Trust is the recurring theme. Industry adopts slowly, and for years Ethernet was dismissed as too unreliable and not deterministic enough for control until Ethernet/IP, PROFINET, and Modbus TCP proved themselves. Today the market has settled around a big four set of protocols, and Chuck does not expect it to narrow further. For high speed motion he points to EtherCAT and PROFINET IRT as the implementations he most respects, since both step away from standard Ethernet at the device level to reach submillisecond timing.
The episode is also a reality check on building your own hardware. Chuck and Dave describe how custom development routinely costs teams hundreds of thousands to millions of dollars, and how the real trap is obsolescence and maintenance rather than the first build. On the product side, the standout is FPD-Link, a serialization technology borrowed from automotive that carries video, touch, and power over one coaxial cable. Working with Safe Fleet, a maker of ambulances and fire trucks, Horner now mounts rugged displays up to seven meters from the PLC while still programming everything as one device.
Looking ahead, Chuck argues that every PLC should now be treated as a data device first, because digitizing the process is the prerequisite for doing anything useful with AI. He also flags cybersecurity as the next burden for application engineers, with new mandates forcing both manufacturers and integrators to implement protections that were once optional. At Automate, Horner is showing HMI Connect and a 300 dollar CPU 151 that packs 18 IO points, wireless connectivity, and edge capability into a micro PLC.
About Chuck and Horner Automation
Chuck is a technical brand ambassador at Horner Automation, where he has spent 36 years across applications, product management, and education. An electrical engineer who started in the automotive industry, he now produces in depth tutorials on industrial protocols for the Horner APG YouTube channel. Horner Automation is a privately held controls manufacturer best known for its all in one PLC and HMI controllers, edge ready PLCs, and rugged hardware for industrial and mobile applications.
Timestamps
0:00 Introduction
2:20 Chuck's Background and 36 Years at Horner Automation
9:20 End User Engineer vs OEM Manufacturer Perspective
13:20 New at Automate: HMI Connect and the CPU 151 Edge PLC
21:30 The Fieldbus Wars and the History of Industrial Protocols
24:20 What It Takes to Implement a Protocol Stack
29:30 Why Protocols Win: Commercial Force vs Technical Merit
32:40 Will Industrial Protocols Ever Converge?
40:30 High Speed Motion: EtherCAT, PROFINET IRT, and Ethernet/IP
44:40 FPD-Link: Rugged Remote HMI for Ambulances and Fire Trucks
55:00 PLCs as Data Devices and the Push Toward AI
1:02:40 Cybersecurity Mandates Coming for Application Engineers
References
Horner Automation: https://www.hornerautomation.com
About Your Hosts
Vladimir Romanov is a co-host of The Manufacturing Hub Podcast and the founder of Joltek, an independent manufacturing and industrial automation consulting firm specializing in modernization strategy, digital transformation, and workforce development. Joltek works with manufacturers and investors to de-risk modernization and build the internal capability to sustain results.
Connect with Vlad: https://www.linkedin.com/in/vladromanov/
Want to go deeper? Vlad and the team at Joltek have covered related topics here:
Understanding Plant Networks: https://www.joltek.com/blog/understanding-plant-networks-how-industrial-connectivity-evolved
Industrial Ethernet Reliability: https://www.joltek.com/blog/industrial-ethernet-reliability
Dave Griffith is a co-host of The Manufacturing Hub Podcast and founder of Capelin Solutions, an industrial automation firm helping manufacturers adopt smart manufacturing technology. He brings 15 years of experience in industrial automation and digital transformation.
Connect with Dave: https://www.linkedin.com/in/davegriffith23/
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