介绍了根据工艺要求系统地构成状态表和程序图，写逻辑表达式。画控制线路的具体方法。
It can be used to systematically construct state array and sequence diagram, write logic expressions, and draw control circuit diagram based on technical requirements.
虽然这在大多数情况下并不需要，不过资深控制项作者可选择覆写逻辑树状结构。
Although it is not necessary in most cases, advanced control authors have the option to override the logical tree.
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