摘  要：本文以西門子S7-300系列PLC和S7-1200系列PLC為研究對象，以十字路口交通燈為例，利用TIA Portal V13編程軟件進行硬件組態和軟件編程。實現了兩臺PLC之間的以太網通信以及觸摸屏對兩臺PLC的監控功能。 關鍵詞：西門子PLC   以太網   觸摸屏 Abstract: The Siemens S7-300 series PLC and S7-1200 series PLC are chose as the research object in this paper. The intersection traffic lights are exampled by using the TIA Portal V13 programming software for the hardware configuration and so[登陸后可查看全文]