以下翻译杜绝机译,请放心采用。In this winding system, we use Mitsubishi A series PLC as master station PLC because it has the characteristic of quick response and great ability of information processing. 在这一卷绕系统中,我们采用了三菱的A系列PLC(可编程控制器)作为主站控制器,因为它具有迅速响应的特性和巨大的信息处理能力。It is used to control the behaviors of the total winding system together with FX series PLCs of winding and unwinding system. 它被用来控制整个卷绕系统以及卷绕和退绕系统FX系列PLC的性状。The operating actions of the system and the sequence of these actions were edited beforehand into the control program by the designer. 系统的动作行为和这些动作的顺序被设计人员事先编辑进控制程序中。The control program sets a series of operations of the winding system, which tells the PLCs how to control a system. 此控制程序设定卷绕系统的一系列运作,他告诉PLC如何来控制系统。The current states of all sensors or actuators are saved as an array of input, output or flag signals in the PLC memory. 所有传感器或执行器的现行状态都被作为输入、输出或旗号信号的阵列,在PLC存储器保存下来。Therefore, the PLC program is the basis of monitoring in a PLC controlled manufacturing system.因此,PLC程序在一个由PLC控制的制造系统中是监控的基础。 The programming method used is the ladder diagram method. 所采用的编程方法是梯形图法。The PLC system provides a design environment in the form of software tools running on a host computer terminal which allows ladder diagrams to be developed, verified, tested, and diagnosed. PLC系统提供了一个软件工具形式的设计环境,这些软件工具在可以开发、验证、测试、并诊断梯形图的主机终端上运行。First, the high-level program is written in diagrams. 首先,在梯形图中写下高层次的程序。Then, the ladder diagram is converted into binary instruction codes so that they can be stored in random-access memory (RAM) or erasable programmable read-only memory (EPROM). 然后梯形图就被转换成二进制指令码,所以它们就可被储存在随机存取存储器(RAM)或可擦除可编程序只读存储器(EPROM)中。Each successive instruction is decoded and executed by the CPU. 每一个相继的指令由CPU(中央处理器)解码和执行。Thefimctionof the CPU is to control the operation of memory and I/O devices and to process data according to the program. CPU的功能是控制存储器和输入/输出器件的工作,并根据程序处理数据。Each input and output connection point on a PLC has an address used to identify the I/O bit. 在一个PLC上的每一个输入和输出连接点都有一个地址,用来识别该输入/输出位。The method for the direct representation of data associated with the inputs, outputs, and memory is based on the fact that the PLC memory is organized into three regions: input image memory, output image memory, and internal memory[4]. 这种用于直接表示与输入、输出和存储器相关的数据的方法是基于以下事实,即PLC存储器被组织进了三个区域:输入图像存储器、输出图像存储器和内部存储器【4】