1C31179G02

1C31179G02

1C31179G02

1C31179G02

状态储存信息：
用于代码实现的中间变量以及可以被人机界面读出的状态变量等
把以上信息都整合到一个类中，并尽量使类的参数标准化。不过，同高级编程语言还是曾在一些差别，针对Step7,应该遵循的标准是：程序结构由FC实现，对象控制由FB实现，如下的一种结构体系（其电气结构来自上面的介绍）：
这只不过是一个粗略的PLC程序架构体系，好的架构应该更完善和科学。
3、 规划好数据结构
数据结构的定义相当重要，并尽量统一这些结构，不要顾虑存储空间，当今的PLC内存足以容纳大量的数据。说明一点的是在Step7中尽量不要在类的外部定义数据结构(UDT),而是在类里面定义，虽然会造成不同类中同一结构的重复性定义，但却提高了类的独立性。

备货，备货，降降降，火火火，火火火……
————————————————————————————————
公司名称：厦门泰尼电气有限公司
联系人：小黄（销售代表）
联系电话：0592-6809319
传真号码：0592-6890859（麻烦备注01006收）
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