Abstract:Aiming at the problems in an industrial plant"s environmental control system, including complex manual operation procedures, time-consuming processes, coordination difficulties during state transitions, incomplete equipment monitoring, lack of rapid verification methods, and absence of report generation after transitions, this study developed a process batch command module. Through OPC (OLE for Process Control) technology, communication with WinCC was established to achieve one-click system state conversion. By leveraging Excel"s formula calculation capabilities, a "variable pool" of backend data was organized to realize real-time perception of equipment operation and communication status. Using ADO (ActiveX Data Objects) technology, communication with an Access database was created. Through optimized cyclic write intervals and read time windows in timing programs, combined with VBA programming and macro recording, transition result verification and automatic report generation were implemented. Simulations and practical applications demonstrated that this solution reduces system state transition time from over 60 minutes to less than 6 minutes, achieving over 90% efficiency improvement.