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0 概述随着电子技术的迅猛发展,人们对全数字控制系统的需求愈加强烈,因此,现场总线技术将成为21世纪工业自动化控制系统的主流控制技术。现场总线技术是在市场对现场仪表智能化以及全数字控制系统的需求下产生的。从技术的角度看它是计算机技术、网络技术和控制技术发展的必然产物。目前,现场总线技术有很多种,其中主要包括有Profibus、DeviceNet、Interbus、Modbus等。西门子的Profibus现场总线产品,一方面充分
0 Summary With the rapid development of electronic technology, the demand for all-digital control system becomes more and more strong. Therefore, the fieldbus technology will become the mainstream control technology of the industrial automation control system in the 21st century. Fieldbus technology is in the market for intelligent field instruments and digital control system generated under the demand. From a technical point of view it is the inevitable product of the development of computer technology, network technology and control technology. At present, there are many kinds of field bus technologies, including Profibus, DeviceNet, Interbus, Modbus and so on. Siemens Profibus fieldbus products, on the one hand full