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博途1200/1500PLC上升沿下降沿指令编程应用技巧(bool数组)
2022-07-28 17:35:00 【RXXW_Dor】
博途PLC的下降沿和上升沿指令,在控制系统编程时经常会使用。和SMART S7-200有所不同,遵循IEC-6113标准提供的上升沿下降沿功能块,都需要边沿存储位地址,边沿存储器位的地址在程序中最多只能使用一次,否则,会覆盖该位存储器。导致程序运行结果异常,边沿存储位的存储区域必须位于DB(或者FB静态区域)或位存储区中。关于上升沿和下降沿指令的自行设计,可以参看下面这篇博文。这里我们主要讲下技巧性的问题,我们在编程时如何定义中间变量,在大量沿指令应用的时候,我们怎么快速实现中间位地址定义。
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