A token-ring-like real-time response algorithm of Modbus/TCP message based on μC/OS-II

被引：1
作者：
Sun, Jinhao [1 ,2 ]
Zou, Fang [1 ]
Fan, Shangchun [2 ]
机构：
[1] AVIC Beijing Aeronaut Mfg Technol Res Inst, Aeronaut Key Lab Digital Mfg Technol, Beijing 100024, Peoples R China
[2] Beihang Univ, Sch Instrument Sci & Optoelect Engn, Key Lab Inertial Sci & Technol Natl Def, Beijing 100191, Peoples R China
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2016年 / 70卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Modbus/TCP; Industrial Ethernet; mu C/OS-II; Real-time; Token ring; INDUSTRIAL COMMUNICATIONS; ETHERNET POWERLINK; PERFORMANCE; NETWORKS; RTAI;
D O I：
10.1016/j.aeue.2015.11.002
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The Modbus/TCP protocol cannot guarantee the real-time capability. A token ring scheduling algorithm that featured by priority to provide the real-time response to the Modbus/TCP messages is designed. The average response delay on a mu C/OS-II+ARM7 platform is 1.117 ms, which is better than most average response delay reported in current researches that aim at improving the real-time performance of Modbus/TCP, and, it reaches the level of Powerlink working in open mode. Finally, a weighted token ring scheduling algorithm and a weight-variable token ring scheduling algorithm are proposed. The two algorithms can meet the demand of customizable and changeable time delay in advanced application. (C) 2015 Elsevier GmbH. All rights reserved.
引用
收藏
页码：179 / 185
页数：7
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