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详细介绍了基于 Ｐｒｏｆｉｂｕｓ总线标准的 ＳＩＮＥＣ Ｌ２网络的特性、访问形式及通信协议，最后给出了其在ＰＡＳＳＩＭ卷烟机组功能控制系统中的应用。
The characteristics, access forms and communication protocols of SINEC L2 network based on Profibus bus standard are introduced in detail. Finally, its application in the function control system of PASSIM cigarette set is given.