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随着科学技术的发展,可编程逻辑控制器PLC在工业控制系统中得到广泛应用,它的可靠性直接关系到工业企业的安全生产和经济运行。而PLC控制系统抵抗干扰的能力是整个生产系统可靠运行的关键。目前,各种类型的可编程逻辑控制器PLC一般安装在集中控制室或生产现场,它们大都处于强电电路和强电设备所形成的恶劣电磁环境中。所以,想要提高PLC控制系统的可靠性,一是需要PLC生产厂家提高PLC硬件本身的抗干扰能力,二是需要工程设计人员充分利用PLC组态软件来消除干扰,这样才能有效地增强系统的抗干扰性能。
With the development of science and technology, programmable logic controller PLC has been widely used in industrial control system, its reliability is directly related to the safety of industrial enterprises and economic operation. The PLC control system to resist interference is the key to the reliable operation of the entire production system. Currently, various types of programmable logic controller PLC are generally installed in the centralized control room or the production site, most of them are in the strong electromagnetic circuit and strong electrical equipment formed by the harsh electromagnetic environment. Therefore, you want to improve the reliability of PLC control system, first, PLC manufacturers need to improve the anti-interference ability of PLC hardware itself, and second, engineers need to make full use of PLC configuration software to eliminate interference, so as to effectively enhance the system Anti-jamming performance.