Journal of Korea Society of Industrial Information Systems (한국산업정보학회논문지)

Korea Society of Industrial Information Systems (한국산업정보학회)
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Performance Analysis and Improvement of RS485 Based Low Speed and Multi-Node CSMA/CD for Control Network System

RS485 기반 다수 노드 제어용 저속통신망에서의 CSMA/CD 기법 적용 및 성능 개선 방안

  • 김민기 (부산대학교 전자전기컴퓨터공학과) ;
  • 최용우 (부산대학교 전자전기컴퓨터공학과) ;
  • 박동찬 (부산대학교 전자전기컴퓨터공학과) ;
  • 김석찬 (부산대학교 전자전기컴퓨터공학과)
  • Received : 2014.11.20
  • Accepted : 2015.02.17
  • Published : 2015.02.28
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Abstract

In this paper, we suggested a RS485 based CSMA/CD protocol that is available in low speed multi-node networks such as industry control communication network and home network etc. The suggested protocol was compared to widely used Master-Slave protocol, Modbus. We modeled realistic control network and showed that the average delay and throughput performance were significantly improved in the different transmission rates.

본 논문에서는 저속이지만 다수 노드의 연결이 요구되는 산업용 제어통신망, 홈네트워크 등에서 널리 사용되는 RS485에 적용할 수 있는 CSMA/CD 기법을 제안하고, 기존의 Master-Slave 프로토콜인 Modbus와 성능을 비교하였다. 모의실험을 위해 실제 산업용 제어통신망을 모델링 하였고, 모의실험을 통하여 여러 전송속도에서 평균 전송 지연시간과 처리량이 크게 개선됨을 보였다.

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