目 录摘要................................................................................................................................................2引言................................................................................................................................................21、电动刀架的控制原理..............................................................................................................41．1、电动刀架结构....................................................................................................................41．2、电动刀架的控制工作程序................................................................................................51．3、操作流程图........................................................................................................................61．4、运行信号波形图及说明....................................................................................................72、PLC 控制系统的确定及线路设计........................................................................................102．1、电动刀架对 PLC 装置的要求.........................................................................................102．2、PLC 控制软件的结构......................................................................................................102．3、 PLC I/O 地址分配.........................................................................................................103、PLC 程序................................................................................................................................134、PLC 程序控制说明：............................................................................................................144．1、信号的处理......................................................................................................................144．2、自动控制过程........................................................................................................
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