基于Modbus的双环路冗余总线控制器的设计与实现  

DESIGN AND IMPLEMENTATION OF DUAL-LOOP REDUNDANT BUS CONTROLLER BASED ON MODBUS

作　　者：黄文庆 李春杰[1] 李伟华 Huang Wenqing;Li Chunjie;Li Weihua(School of Software Engineering,USTC,Suzhou 215123,Jiangsu,China;Suzhou Bonray Measurement and Control Equipment Co.,Ltd.,Suzhou 215143,Jiangsu,China)

机构地区：[1]中国科学技术大学软件学院,江苏苏州215123 [2]苏州博睿测控设备有限公司,江苏苏州215143

出　　处：《计算机应用与软件》2024年第11期273-278,共6页Computer Applications and Software

摘　　要：针对传统过程控制系统的PLC/DCS对终端执行机构实时监测与控制导致系统资源消耗沉重,单点设备故障容易引发整个系统通信瘫痪等工业问题,为增强系统通信容错能力,使PLC与终端执行机构稳定可靠地连接,设计并实现基于Modbus的双环路冗余总线控制器。控制器内部采用双CPU冗余热备份设计,有效降低PLC的工作负担,提高了系统的鲁棒性和实时性,适用于工业现场。The PLC/DCS real-time monitoring and control of the terminal actuator in the traditional process control system leads to heavy system resource consumption,and the failure of a single of equipment is easy to cause communication breakdown of the whole system and other industrial problems.To enhance the communication fault-tolerant ability of the system and make PLC and terminal actuators connect stably and reliably,a dual-loop redundant bus controller based on Modbus was designed and implemented.The controller adopted dual CPU and the design of redundant heat backup,which effectively reduced the PLC workload,improved the system robustness and real-time performance,and was suitable for industrial field.

关 键 词：MODBUS 总线控制器 冗余 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术]