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Strong versatility, variable control program, easy to use PLC has a complete variety of hardware devices, which can…

Software measures: It has strong self-checking and protection functions. ①Fault detection – The software regu…

Hardware measures: The main modules use large-scale or ultra-large-scale integrated circuits, a large number of swi…

In order to adapt to the use in the industrial environment, compared with the general control device, the PLC machi…

PLC can be divided into two categories: box type and modular type. Microcomputers and minicomputers are mostly box-…

There are many types of programmable controllers, which can be classified from different perspectives: According t…

PLC networking and communication capabilities are very strong, and new networking structures are constantly being i…

There are many PLC self-test signals and many internal devices, and most users do not give full play to their funct…

　　实际的物理量，除了开关量、模拟量，还有运动控制。如机床部件的位移，常以数字量表示。　　运动控制，有效的办法是NC，即数字控制技术。这是50年代诞生于美国的基于计算机的控制技术。当今已很普及，并也很完善。目前，先进国家的金属切…

Analog quantities, such as current, voltage, temperature, pressure, etc., are continuously changing in size. Indust…

PLC is mainly used for logic control of switching quantity. With the advancement of PLC technology, its application…

　　PLC在国内外已广泛应用于钢铁、石油、化工、电力、建材、机械制造、汽车、轻纺、交通运输、环保及文化娱乐等各个行业，使用情况主要分为如下几类：　　开关量逻辑控制　　取代传统的继电器电路，实现逻辑控制、顺序控制，既可用于单台设…