Several modules, such as CPU module, input module, output module, power module, etc. Among them, the functions of each module are relatively single, but the types of modules are becoming more and more abundant. For example, in addition to some basic i/o modules, some programmable controllers also have some special function modules, such as temperature detection module, position detection module, PID control module, communication module and so on. The PLC with combined structure is characterized by modules with CPU, input and output. The module size is unified, the installation is neat, the i/o point selection, installation and debugging, expansion and convenience. The stackable stackable structure integrates the advantages of compact integral structure, small volume, convenient installation and the combination of i/o points, smart words and neat installation. It is also composed of the combination of various units. It is characterized by the basic unit of CPU (composed of CPU and certain i/o points), and other i/o modules are expansion units. During installation, there is no base plate, and only cables are used for connection between units. Each unit can be stacked one by one. Make the configuration flexible and compact. SIMATIC S7-200 PLC S7-200 PLC is a super miniaturized PLC, which is suitable for automatic detection, monitoring and control in all walks of life. The powerful function of S7-200 PLC enables it to realize complex control functions whether it is running alone or connected into a network. S7-200PLC can provide 4 different basic models and 8 kinds of CPUs for selection.
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