【摘要】 介绍了ASI和ProfibusDP总线的原理和技术特点，并从开关电器的特点出发，讨论如何使用上述两种现场总线构成监控系统。更多还原

【Abstract】 Thearticle illustrates the principle and tech nical features of ASI and Profibus DP,and on the basis of the characteristics o f switches,it elaborates how to use the watching and controlling system which is made up with the two fieldbus above.更多还原