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Stochastic model of the Profibus DP cycle time.

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Title: Stochastic model of the Profibus DP cycle time.
Authors: Vitturi, S.1
Source: IEE Proceedings -- Science, Measurement & Technology. Sep2004, Vol. 151 Issue 5, p335-342. 8p.
Subjects: Profibus (Computer bus), Computer buses, Stochastic processes, Data transmission systems, Bus conductors (Electricity), Personal computers
Abstract: Profibus DP is a fieldbus protocol included in most important international standards relevant to industrial communication systems. The protocol specifies the presence of two types of device on the network: masters and slaves. The operation of Profibus DP is based on the repetition of a cycle during which every master polls its slaves and performs some possible acyclic activities. The duration of such a cycle, known as Profibus DP cycle time, may not be constant for two different reasons: retransmissions of the frames used to exchange data which are either corrupted or lost, and the acyclic activities. An analytical description of the Profibus DP cycle time is given, taking into consideration the random variables that make up it. A detailed stochastic description is obtained for each of such random variables. The results allow one to calculate, under some simplifying hypothesis, the stochastic description of the jitter that may affect the Profibus DP cycle time in many practical applications. A numerical example of application of the obtained results is included. [ABSTRACT FROM AUTHOR]
Copyright of IEE Proceedings -- Science, Measurement & Technology is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Stochastic model of the Profibus DP cycle time.
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  Data: <searchLink fieldCode="DE" term="%22Profibus+%28Computer+bus%29%22">Profibus (Computer bus)</searchLink><br /><searchLink fieldCode="DE" term="%22Computer+buses%22">Computer buses</searchLink><br /><searchLink fieldCode="DE" term="%22Stochastic+processes%22">Stochastic processes</searchLink><br /><searchLink fieldCode="DE" term="%22Data+transmission+systems%22">Data transmission systems</searchLink><br /><searchLink fieldCode="DE" term="%22Bus+conductors+%28Electricity%29%22">Bus conductors (Electricity)</searchLink><br /><searchLink fieldCode="DE" term="%22Personal+computers%22">Personal computers</searchLink>
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  Data: Profibus DP is a fieldbus protocol included in most important international standards relevant to industrial communication systems. The protocol specifies the presence of two types of device on the network: masters and slaves. The operation of Profibus DP is based on the repetition of a cycle during which every master polls its slaves and performs some possible acyclic activities. The duration of such a cycle, known as Profibus DP cycle time, may not be constant for two different reasons: retransmissions of the frames used to exchange data which are either corrupted or lost, and the acyclic activities. An analytical description of the Profibus DP cycle time is given, taking into consideration the random variables that make up it. A detailed stochastic description is obtained for each of such random variables. The results allow one to calculate, under some simplifying hypothesis, the stochastic description of the jitter that may affect the Profibus DP cycle time in many practical applications. A numerical example of application of the obtained results is included. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of IEE Proceedings -- Science, Measurement & Technology is the property of Institution of Engineering & Technology and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1049/ip-smt:20040668
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        Text: English
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      – SubjectFull: Profibus (Computer bus)
        Type: general
      – SubjectFull: Computer buses
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      – SubjectFull: Stochastic processes
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      – SubjectFull: Data transmission systems
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      – SubjectFull: Bus conductors (Electricity)
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      – SubjectFull: Personal computers
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