Industrial control systems require high-volume, high-speed transmission of large amounts of data, such as images and voice signals, which has spurred the integration of Ethernet with control networks, a technology currently popular in the commercial sector. This wave of industrial control system networking has further integrated various popular technologies such as embedded technology, multi-standard industrial control network interconnection, and wireless technology, thereby expanding the development space of the industrial control field and bringing new development opportunities.
With the development of computer technology, communication technology, and control technology, the traditional control field is undergoing an unprecedented transformation, moving towards networking. The structure of control systems has evolved from the initial CCS (Computer Centralized Control System) to the second-generation DCS (Distributed Control System), and now to the popular FCS (Fieldbus Control System).
With the rapid development of industrial technology, distributed control systems (FCS) and fieldbus control systems have emerged. Some people in certain industries believe that FCS evolved from PLC; others believe that FCS evolved from DCS. While FCS is closely related to both PLC and DCS, there are also fundamental differences between them.
DCS (Distributed Control System), also known as a distributed control system, is a type of computer control system that is developed and evolved from centralized control systems.
FCS (Fieldbus Control System) is an open, interoperable network that interconnects various controllers, instruments, and equipment in the field to form a fieldbus control system. It also decentralizes control functions to the field, reducing installation and maintenance costs.
A PLC (Programmable Logic Controller) is a microprocessor-based digital controller used for automation control. It can load control instructions into memory for storage and execution. A programmable controller consists of a CPU, instruction and data memory, input/output interfaces, power supply, and digital-to-analog converters, among other functional units.
In short, all assembly line equipment used in factory production belongs to industrial equipment, and the systems that control industrial equipment belong to industrial control systems.
