4101是一种控制机器动作顺序的“程控型"控制器，它在固化的系统程序的支持下，按照"输入采样- +户程序运算- +输出刷新”的步骤循环地工作,反复地执行用户程序来实现预定的控制功能，并且支持用“(虚拟)继电器语言”(如“梯形图”)来编写用户程序。4101由中央处理器CPU,存储器，输入输出接口，编程器组成。 各自功能如下: 4101中央处理器CPU是核心，它的作用时接受输入的程序并存储程序。扫描现场的输入状态，执行用户程序,并自诊断。存储器用来存放程序和数据。 4101输入接口采集现场各种开关接点的信号状态，并将其转化成标准的逻辑电平,输出接口用于输出电信号来控制对象。 4101编程器用于用户程序的编制，编辑，调试，检查和监视。还可以显示PLC的各种状态。 4101 is a "programmable" controller that controls the sequence of machine actions. With the support of a fixed system program, it works in a cyclic manner following the steps of "input sampling -+user program operation -+output refresh", repeatedly executing user programs to achieve predetermined control functions, and supporting the use of "(virtual) relay language" (such as "ladder diagram") to write user programs. 4101 consists of a central processing unit (CPU), memory, input output interface, and programmer. The respective functions are as follows: The 4101 central processing unit (CPU) is the core, which accepts input programs and stores them. Scan the input status on site, execute user programs, and self diagnose. Memory is used to store programs and data. The 4101 input interface collects the signal states of various switch contacts on site and converts them into standard logic levels. The output interface is used to output electrical signals to control the object. The 4101 programmer is used for programming, editing, debugging, checking, and monitoring user programs. It can also display various statuses of the PLC.
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