摘  要：本文在简介了PROFIBUS-DP系统所包括的三种不同类型设备的基础上，重点阐述了PROFIBUS-DP的总线存取过程应遵循的原则及PROFIBUS-DP系统行为和行规。 关键词：系统设备   系统行为   系统行规 Abstract: Based on three different types of equipment in this paper including the brief introduction of PROFIBUS-DP system, Focuses on the behavior and norm principle and PROFIBUS-DP system bus access PROFIBUS-DP should follow. Key Words: System device   System behavior[登陆后可查看全文]