论文讨论了PLC的原理及软plc的优越性、软plc编译原理，重点研究了PLC梯形图语言的编译技术。
Paper discussed soft PLC, include its superiority and the principle of PLC compile principle, emphasize studied PLC ladder digram compile technology.
论文讨论了PLC的原理及软plc的优越性、软plc编译原理，重点研究了PLC梯形图语言的编译技术。
Paper discussed soft PLC, include its superiority and the principle of PLC compile principle, emphasize studied PLC ladder digram compile technology.
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