基于siemenss7300plc的交通燈設計及其仿真論文

1、1 江蘇農林職業(yè)技術學院畢 業(yè) 設 計（論 文）SNL/QR7.5.4-3 基于 SIEMENS/S7-300PLC 的交通燈設計及其仿真專 業(yè)學生姓名班 級學 號指導教師完成日期ABSTRACT Programmable Logic Controller （PLC）is one kind of durable and easy-use automatic control unit. The PLC is applied in larg

2、e range in industrial control field due to its can be easily design program and with good precision. This paperwork implements the SIMENS-S7-300PLC into controlling the traffic signal lights system. The design specifica

3、tion is to use the S7-300PLC as the ECU for controlling the 8 traffic lighters in four directions. The paperwork conducts the up-down principle and design 6 counters for controlling the 8 lighters in different frequency