摘要
介绍了一种PLC模拟量串行输入接口的设计方法,详细说明了硬件结构及工作原理,给出了程序(梯形图)及接口时序。实验证明该接口能很好地满足PLC对大惯量模拟信号的采集。
This paper introduces a design method of adding analogy signal serial input interface to low price PLC .The hardware structure and its working principle is given , program (ladder diagram) and times is illustrated in detail .It is verified in practice that this interface is satisfied mostly for sampling analogy signal.
出处
《重庆三峡学院学报》
2003年第3期113-115,共3页
Journal of Chongqing Three Gorges University
关键词
模数转换
并串转换
移位
接口
梯形图
时序
A/D transfer
P/S transfer
shift
interface
ladder diagram
times .
