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PLC编程中OB块、FC块、FB块、DB块的使用原则 - 搜狐
西门子新加块中包含组织块(OB)、函数块(FB)、函数(FC)、数据块(DB) 组织块(OB)属于系统级别的调用块 函数块(FB)带有存储数据的功能块 函数(FC)具有一定功能的代码,不带存储数据 数据块(DB)一种由所有代码块访问的全局数据块,一种分配给特定功能块调用的背景数据块 01 组织块 ...
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