I learned on PLC1's in tech school. Used PLC2,PLC5, and SLC500 as well as about every other brand doing application work. Now we have ControlLogix with integrated motion control. You'd **** how easy it is to program now compared to the crappy file structures we used to have. If you have an input and you want to call it Mary, you name it Mary and it don't care. Sky is the limit. I can run 64 servo axis on one controller, all in perfect synchronization. Wrap hundreds of lines of ladder logic up into a add-on instruction and drop it into the program wherever it's needed and it takes up one rung. I've worked on diaper machines that had six controllers and 120 axes of servo motion and were 150 ft long. They spit out a lot of diapers in a hurry.
OK, enough BS'ing. Back to the radiator discussion.
