三菱FX2N系列PLC微分指令的应用

摘要

To clarify the application of Mitsubishi FX2N series PLC differential instruction in industrial control system,through two practical control engineering application cases, on the basis of profound understanding the mode of serial cycle scanning, a skilled program was designcd by using PLS and PLF instruction. The automatic control with multiple actions for multiple devices or single device by single signal is achieved. After studying the actual effects, it not only can reduce the number of hardware but also can save investment.%为了阐明三菱FX2N系列PLC微分指令在工业控制中的应用,通过两个实际控制工程应用案例,在深刻领会PLC的串行循环扫描工作方式的基础上,应用上升沿微分PLS和下降沿微分PLF两个微分指令的控制程序,巧妙地设计实现单一信号对多个设备、或单一信号对单设备多动作的自动化控制,获得以软件的合理设计减少硬件数量、节省工程投资的效果.