Analysis of real-time data transmission in the DLL of IEC/ISA fieldbus
- Authors
- Hong, Seung Ho; Ko, Seong Jun
- Issue Date
- Jul-1998
- Publisher
- IEEE, Piscataway, NJ, United States
- Citation
- IEEE International Symposium on Industrial Electronics, v.2, pp.694 - 699
- Indexed
- SCOPUS
- Journal Title
- IEEE International Symposium on Industrial Electronics
- Volume
- 2
- Start Page
- 694
- End Page
- 699
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/188213
- DOI
- 10.1109/ISIE.1998.711706
- Abstract
- Fieldbus provides real-time data communication among field devices in the process control and factory automation systems. IEC and ISA recently approved the Committee Draft of the data link layer of fieldbus standard for use in industrial control systems. Data link layer of IEC/ISA fieldbus is operated on the basis of token-passing and scheduling mechanisms. In this paper, we analyze the performance characteristics of the IEC/ISA fieldbus, especially the capability of real-time data transmission. A discrete-event simulation model of the data link layer is developed. Using the simulation model, this paper identifies the network parameters that influence the performance of priority mechanism and real-time data transmission, and analyzes the delay performance of IEC/ISA fieldbus with respect to the change of the network parameters. The fieldbus simulation model also integrates continuous-time simulation model of a control system as application process. Using the simulation model, this paper investigates the effect of network-induced delay on the performance of control system.
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