PLC, also known as Programmable Logic Controller, is a microcomputer with a core of a single-chip embedded system. This system is developed based on relay control and is mainly used in the field of industrial automation control. The programming language of PLC is mainly ladder diagram, which is an intuitive and easy-to-understand programming method. However, the programming methods supported by different brands of PLC may vary, such as Siemens, Mitsubishi and Schneider, etc. have their own characteristics in PLC programming languages.
A board card, also known as PCB board, is a circuit board with specific functions, with electronic components and connection lines densely arranged on it. During the production process of the board card, holes will be reserved to insert it into the specific slot of the main circuit board (motherboard) of the computer, thereby achieving the function of controlling hardware. The board card can control various hardware devices, such as displays, acquisition cards, etc. After installing the corresponding driver programs, the functions of these devices will be fully exerted.
There are obvious differences in function and application between the two. PLC is mainly used for industrial automation, such as production line control, robot control, etc., and has strong logical control capabilities. While the board card is more often used as an expansion component of the computer system to enhance the computer’s functions, such as display output, data acquisition, etc. They play different roles respectively, but both are indispensable important components of modern industry and information technology.
Although PLC and board cards have significant differences in function and application, they both cannot do without the support of hardware. For example, PLC needs to exchange data with on-site equipment through input and output modules, while the board card needs to communicate with other components of the computer through the interface provided by the motherboard. In addition, the design of PLC and board cards also follows different norms and standards to ensure their compatibility with other devices and systems.
In summary, PLC and board cards play unique roles in industrial automation and computer technology. PLC is good at handling logical control and data processing, while the board card focuses more on providing specific hardware functions and expansion. Their combined use provides strong support for the development of modern industrial automation and computer technology.