摘要
PLC热备冗余可以提高系统的可靠性,在长期不间断运行的控制场合中广泛应用。该文介绍热备冗余原理,分析PLC热备冗余的关键技术,给出PLC热备冗余的具体设计方案,为冗余PLC研究和产品选型提供参考。
The hot backup redundant PLC with high reliability was widely used in control system that running longterm and uninterruptedly. In this paper,the principle of hot backup redundancy was introduced,the key technologies was analysised ,the design scheme of hot backup redundancy PLC was described. This is helpful to product type selection and development.
出处
《自动化与仪表》
2015年第2期46-49,共4页
Automation & Instrumentation
关键词
可编程逻辑控制器
冗余
热备
设计
programmable logic controller （PLC）
redundancy
hot backup
design
