摘  要：介紹了一種基于PLC和WinCC的空氣自動控制系統方案，通過介紹系統軟硬件的組成和特點，論述了PLC和WinCC實現空氣監測和控制的具體方法。系統以S7-300PLC為控制器，用WinCC輸入各種參數以及顯示系統狀態,具有抗干擾能力強和人機交互性好等特點。關鍵詞：PLC  S7-300  WinCC  變頻器 Abstract: This paper introduces an automatic air control system based on PLC and WinCC. Through presenting the composition and characteristics of the system hardware and software, this paper discusses the speci[登陸后可查看全文]