I’ve spent more than 40 years around industrial control systems, and one thing has become very clear: Engineering a control system is not the same as troubleshooting one at 3:00 in the morning. Engineers design the system. Technicians recover it. When the machine stops, the technician has to figure out what changed input logic output field device wiring or the controller itself — all while production is waiting. That’s a different skill set entirely. I’ve seen this gap from
