I deal with both PIs and PLCs for a living. I don’t have much faith in the future of PLCs to be honest. They just don’t seem to be willing to move forward in any sense of the word. The price for the same hardware tracks inflation, the lead times are getting worse, no version control, no higher level code development, still struggling over basic driver stuff, almost no interoperability, basic things that are wrong aren’t getting fixed, almost no code sharing, everything locked down…
Basically they fit 1994 and decided to just stay there. The only good stuff they offer is greater reliability and more I/O. Right now I can buy an HMI-PI-PLC that can do everything my old systems can do and more for lower cost.
As far as guys I know that do industrial MMI, it’s PLCs all the way down for reliability. They’d desperately like to avoid the Siemens and ABs of the industry, but nobody ever got fired for buying those and they cratered. Which they do, no doubt, but I wouldn’t be trusting much to a hobbyist SBC.
I deal with both PIs and PLCs for a living. I don’t have much faith in the future of PLCs to be honest. They just don’t seem to be willing to move forward in any sense of the word. The price for the same hardware tracks inflation, the lead times are getting worse, no version control, no higher level code development, still struggling over basic driver stuff, almost no interoperability, basic things that are wrong aren’t getting fixed, almost no code sharing, everything locked down…
Basically they fit 1994 and decided to just stay there. The only good stuff they offer is greater reliability and more I/O. Right now I can buy an HMI-PI-PLC that can do everything my old systems can do and more for lower cost.
As far as guys I know that do industrial MMI, it’s PLCs all the way down for reliability. They’d desperately like to avoid the Siemens and ABs of the industry, but nobody ever got fired for buying those and they cratered. Which they do, no doubt, but I wouldn’t be trusting much to a hobbyist SBC.