P0900GA FOXBORO 程序块

P0900GB – FOXBORO
P0900GC – FOXBORO
P0900NT – FOXBORO
P0900WA – FOXBORO
P0900WT – FOXBORO
P0900ZV – FOXBORO
P0900ZW – FOXBORO
531X139APMASG2 531X139APMARM7
DS200ADGIH1AAA
DS200DCFBG2BNC
DS200FCRRG1AKD
DS200PCTMG1AAA
DS200RTBAG3AEB
DS200SVAAG1A DS200SVAAG1ACB
DS200TCQAG1BHF
DS200TCQBG1BCB
DS3800HMPK1F1B

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Description

Step7中有另外一种程序块,即FC块,以FC块为主的编程在西门子中称为结构化编程,这也可以类比于计算机编程中的面向过程编程,即纯粹以函数为主体的编程。施耐德电气的Unity软件编程可以更好的理解面向对象编程。它的DFB定义中包含输入/输出参数,私有/共有变量,以及代码实现,而这正是计算机的面向对象编程中“类”的基本元素,而创建类的实例(对象)就像创建普通的“布尔”变量一样,只需在“FunctionBlocks”中定义这种“类”的变量即可。

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