现场总线(Fieldbus)技术又称全分散全数字化技术,它是自九十年代以来随着计算机和计算机网络技术的蓬勃发展而发展起来的新技术。现场总线是用于现场仪表与控制系统和控制室之间的一种全分散、全数字化、智能、双向、互联、多变量、多点、多站的通信系统,它具有可靠性高、稳定性好、抗干扰能力强、通信速率快、系统安全并符合环境保护要求、造价低廉、且维护成本低等特点,是全数字式系统的重要组成部分。 Fieldbus (Fieldbus) technology, also known as fully distributed digital technology, it is the technology that has developed with the rapid development of computer and computer network technology since the nineties. Fieldbus is a fully decentralized, all-digital, intelligent, bidirectional, interconnected, multivariable, multi-point and multi-station communication system used between field instruments and control systems and control rooms. It has high reliability and stability Good, anti-interference ability, fast communication speed, system security and environmental protection requirements, low cost, and low maintenance costs, is an all-digital system, an important part.