根据控制要求，结合程序设计，得到系统电路图和系统接线图，列出了所需要的元器件表。

Under the control requirements, the combination of programming, system by system and circuit wiring diagram, the list of the necessary components table.

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介绍了P LC在该箱体加工组合机床控制系统改造中的应用，给出了外部接线图和梯形图。

And it introduces application of Programming Logic Control (PLC) in machining this cabinet with aggregate machine tool. Then it gives outer wiring diagram and ladder diagram.

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详细分析了输送系统设备保护控制电动机原理图、程序框图、PLC系统外部接线图。

Detailed analysis of the transportation system protection and control equipment, motor schematic, block diagram, PLC system, the external wiring diagram.

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