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现场总线技术的出现,使得自动化系统发生了质的飞跃,现场总线已经成为21世纪自动控制技术的热点。由于它适应了工业控制系统向分散化、网络化、智能化发展的方向,给自动化系统的最终用户带来更多方便,并促使目前生产的自动化仪表、集散控制系统DCS、可编程控制器PLC产品面临体系结构、功能等方面的重大变革,导致工业自动化产品的又一次更新换代。——编者
The emergence of fieldbus technology, making a qualitative leap in automation systems, field bus has become the hot 21st century automatic control technology. Because it has adapted to the direction of decentralized, networked and intelligent development of industrial control systems, it has brought more convenience to the end users of automation systems and promoted the production of automation instruments, distributed control system DCS, programmable logic controller PLC Products are facing major changes in the architecture, functions, etc., resulting in another update of industrial automation products. --editor