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随着自动化控制技术不断发展及网络的日益成熟,新一代基于网络的PLC控制系统必然会取代以往简单的电缆连接方式的控制模式,以方便大规模集中控制及管理。分布式IO正是基于这一理念迅速发展起来的,它既可以把远在千米之外的控制点轻松引进集控室,也可把零散分布在各个区域的被控信号引入PLC,而这些仅仅通过一根电缆即可实现。本文将该技术应用于辽宁某钢厂连铸水处理系统过滤器自动控制中。
With the continuous development of automation and control technology and the increasing maturity of the network, a new generation of network-based PLC control system will inevitably replace the simple control mode of cable connection in the past, in order to facilitate large-scale centralized control and management. Distributed IO is based on the rapid development of this idea, it can not only far away from the control points easily introduced into the control room, but also scattered in various regions of the controlled signal into the PLC, and these only Through a cable can be achieved. This article applies this technology to the automatic control of the continuous casting water treatment system filter in a steel plant in Liaoning.