The　Industrial　Internet　is　becoming　the　most　important　infrastructure　for　industrial　manufacturing　systems.　With　the　emergence　and　development　of　cloud　control　technology,　cloud　control　will　become　one　of　the　most　important　functions　in　the　Industrial　Internet.　This　paper　takes　the　three-tank　as　the　research　object,　adopts　the　industrial　Internet　architecture,　and　proposes　a　cloud　control　system.　By　applying　data　engine　technology,　an　isomorphic　three-tank　mathematical　model　is　constructed　on　heterogeneous　PLCs,　thereby　establishing　a　semi-physical　simulation　system,　and　realizing　the　real-time　human-computer　interaction.　The　three-tank　semi-physical　simulation　cloud　control　system　is　built　by　the　software　tools　of　the　industrial　Internet　platform,　and　experimentally　studied　to　verify　that　the　industrial　Internet　architecture　and　cloud　control　algorithm　proposed　in　this　paper　is　scientifically　effective.　©　2022,　The　Author(s),　under　exclusive　license　to　Springer　Nature　Singapore　Pte　Ltd.