现场总线的应用现状和发展趋势由于各个国家各个公司的利益之争,虽然早在1984年国际电工技术委员会/国际标准协会(IEC/ISA)就着手开始制定现场总线的标准,至今统一的标准仍未完成。很多公司也推出其各自的现场总线技术,但彼此的开放性和互操作性还难以统一。目前现场总线市场有着以下 Fieldbus application status and development trend As the interests of various companies in various countries dispute, although as early as 1984, the International Electrotechnical Commission / International Standards Association (IEC / ISA) began to develop standards for fieldbus, so far unified standards are still undone. Many companies also introduce their own fieldbus technology, but each other’s openness and interoperability is also difficult to unify. The current field bus market has the following