【導(dǎo)讀】達(dá)到對(duì)交通信號(hào)燈的控制。控制過(guò)程中采用了順序控制設(shè)計(jì)法用了八個(gè)定時(shí)器六個(gè)計(jì)。數(shù)器分時(shí)段分頻率自動(dòng)實(shí)現(xiàn)對(duì)八個(gè)控制對(duì)象的控制。控制程序包括有順序功能圖。、梯形圖、指令表。PLC的發(fā)展及現(xiàn)狀··········································································1. 本人的主要工作·············································································1. 第2章十字路口交通信號(hào)燈的PLC控制線路設(shè)計(jì)··············2. PLC的選型及技術(shù)參數(shù)····································································3