贝利SPIET800以太网CIU传输模块

贝利SPIET800以太网CIU传输模块

各种PLC的组成结构基本相同，主要有CPU,电源，储存器和输入输出接口电路等组成。

•CPU通过地址总线、数据总线、控制总线与储存单元、输入输出接口、通信接口、扩展接口相连。CPU是PLC的核心，它不断采集输入信号，执行用户程序，刷新系统输出

•PLC的存储器包括系统存储器和用户存储器：系统存储器用于存放PLC的系统程序，用户存储器用于存放PLC的用户程序。

•PLC的输入输出接口主要用于将按钮，开关，各类传感器传入输入接口，输出接口是将CPU向外输出的信号转换成可以驱动外部执行元件PLC的扩展接口的作用是将扩展单元和功能模块与基本单元相连，使PLC的配置更加灵活，以满足不同控制系统的需要；

通信接口的功能是通过这些通信接口可以和监视器、打印机、其他的PLC或是计算机相连，从而实现“人-机”或“机-机”之间的对话。

The composition structure of various PLC is basically the same, mainly composed of CPU, power supply, storage and input and output interface circuit.

• The CPU is connected to the storage unit, input/output interface, communication interface and expansion interface through the address bus, data bus and control bus. CPU is the core of PLC, it constantly collects input signals, executes user programs, and refreshes system output

•PLC memory includes system memory and user memory: system memory is used to store PLC system programs, and user memory is used to store PLC user programs.

•PLC input and output interface is mainly used to push buttons, switches, all kinds of sensors into the input interface, the output interface is to convert the CPU output signal into an expansion interface that can drive the external actuator PLC The role is to connect the expansion unit and function module with the basic unit, so that the configuration of PLC is more flexible to meet the needs of different control systems;

The function of the communication interface is that through these communication interfaces can be connected to monitors, printers, other PLCS or computers, so as to achieve "human-machine" or "machine-machine" dialogue.