An Efficient Simulator for the Profibus-dp Mac Layer Protocol
نویسندگان
چکیده
The main goal of this paper is to develop an integrated general-purpose simulator for the Profibus MAC layer protocol in order to evaluate the steady-state behavior of this protocol, under a variety of possible operational conditions in a faulty communication channel. This protocol is part of the Profibus-DP system used widely as a standard and popular industrial communication system. This work examines deeply the performance of the protocol taking into account all critical system parameters and focusing on the main control (token/polling) and data communication (request/response) transactions. Using this simulator it can be shown how the data packet transfers, as well as the control packet transactions are strongly affected by the channel faults, especially for complex and expanded network topologies. However, under certain operational conditions the network performance can be acceptable.
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