El Paso水务设施/公共服务委员会将基于PC的SCADA系统用于其配水系统。最近，该公司决定通过购买新的软件和其他组件来增强系统，以提高可靠性，减少轮询时间，并从中央控制提供更多的功能操作。本报告描述了El Paso系统，并定义了确定满足项目目标所需系统具体需求所采取的方法。该方法的基础是预先设计报告，该报告确定了目标，并确定了实现目标所需的组件。该方法开发了要使用的通信链路以及DAC组件的要求。 根据公用事业的总体目标和功能目标，制定了11种控制策略。控制策略包括图形表示，显示特定类型现场的现场设备和DAC组件以及中央控制的软件功能之间的相互关系。下图显示了用于加快轮询时间的无线电通信系统。

A PC based SCADA system is used by the El Paso Water Utilities/Public Service Board for its water distribution system. Recently, the Utility decided to enhance the system by acquiring new software and other components to increase reliability, reduce polling times, and provide increased functional operations from Central Control. This report describes the El Paso system and defines the approach taken to determine the specific needs of the system required to meet the project's objectives. Basic to the approach was the Predesign Report, which determined objectives and ascertained the components needed to accomplish the objectives. The approach developed the communication link to be used as well as requirements for DAC components. Eleven control strategies were developed based on the general and functional objectives of the utility. The control strategies consisted of graphical representations that showed the interrelationships of field devices at a particular type of site and software functions at the DAC component as well as at central control. A figure shows the radio communication system adopted to speed polling times.