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近几年来,微型计算机应用于工业生产的过程控制,显示了计算机控制系统的强大生命力。不仅可靠性高,操作方便,而且维护简单,经济效果明显。特别是近十年来出现的分散微处理机控制系统,其应用通用性强,并且现场操作人员和工程技术人员不需要作编制计算机程序的训练,就可以使用计算机系统,所以该种类型的系统易于推广。计算机控制系统明显的优点是能把相隔数公里的现场控制装置用通讯网络连接起来,相互交换信息。中央控制室能把有用的控制信号经过网络传给现场控制装置。现场控制装置又能独立完成控制功能。不仅如此,还能与上位计算机联网,与全厂的管理计算机联网,组成更大规模的计算机网络。
In recent years, microcomputer control process used in industrial production, showing the strong vitality of computer control systems. Not only high reliability, easy operation, and easy maintenance, economic effect is obvious. In particular, decentralized microprocessor control systems that have emerged over the past decade are highly versatile and field operators and engineers do not need to train in computer programming to use computer systems, so this type of system is easy to use Promotion. The obvious advantage of a computerized control system is the ability to connect field controls within a few kilometers of each other using a communications network to exchange information with each other. The central control room can send useful control signals to the field control via the internet. On-site control device can complete the control function independently. Not only that, but also with the host computer networking, and the entire plant management computer networking, to form a larger computer network.