摘  要：本文在簡介了PROFIBUS-DP系統所包括的三種不同類型設備的基礎上，重點闡述了PROFIBUS-DP的總線存取過程應遵循的原則及PROFIBUS-DP系統行為和行規。 關鍵詞：系統設備   系統行為   系統行規 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[登陸后可查看全文]