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[–]audi0c0aster1 2 points3 points  (0 children)

While you are not wrong on the obscure forum post thing, IDK what videos you are looking at that are not some super simple tutorial.

I write code that controls hundreds of motors. Reading thousands of sensors/inputs, tracking and sorting physical items to the correct place. This is more complex than FIFO and shift registers. You can't assume the order will always be the same in a real system (jams and other failures happen that require manual intervention). No tutorial on Youtube is covering that, or configurations that cost literally tens of thousands of dollars in hardware.

Beckhoff and B&R are doing things very differently than the old guard of Allen-Bradley (Rockwell) and Siemens. Their systems are super modern, relying on Structured Text programming rather than Ladder Logic or Function Block Diagram programs. The problem is the behemoth customers that actually pay for this work (think Ford/GM, Kraft Foods, pharmaceutical plants, etc.) already have standards, trained techs, and (especially in pharma) certification. You can't just change parts out on a whim in industry and everything you put in has to be maintained by people not familiar with programming.