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现代的DCS系统功能强大且结构复杂。对其进行良好组态可以帮助操作者对生产过程进行最优控制。报警的组态必须考虑到控制目标及安全目标。但是，应用中退即使是最智能化、得到最精心应用的报警原理也发挥不了其作用。问题的基本原因在于组态是固定的，而针对的对象是整个操作及过渡状态。许多DOS系统的最佳工作点都是在“正常”工况，即稳态下。多数计划工况，如启动、停车、切换和再生等都不是稳态。而那些非计划工况、根据经验，也不是稳态。本文的正常工况的定义是指那些计划的操作状态的变化，非正常工况正好相反。
Modern DCS systems are powerful and complex. Well-configured to help operators control the production process optimally. The configuration of the alarm must take into account the control objectives and safety goals. However, the application of retreat even the most intelligent, get the most carefully applied alarm principle can not play its role. The basic reason for the problem is that the configuration is fixed, and the target is the entire operation and transitional state. The best operating point for many DOS systems is in “normal” operating conditions, ie steady state. Most planned conditions, such as start, stop, switch and regeneration are not steady state. And those unplanned conditions, based on experience, are not steady. The definition of normal working conditions in this paper refers to those planned changes in operating conditions, the abnormal conditions are exactly the opposite.