描述
组合逻辑设计法适合于设计开关量控制程序，它是对控制任务进行逻辑分析和综合，将元件的通、断电状态视为以触点通、断状态为逻辑变量的逻辑函数，对经过化简的逻辑函数，利用PLC逻辑指令可顺利地设计出满足要求且较为简练的程序。这种方法设计思路清晰，所编写的程序易于优化。
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