[en] An operator should provide the correct and fast actions on a cause of alarms and failure for reducing the effect of failure. There are a lot of study. But most of those studies may use a physical knowledges or causal relationships. Most of those studies impose on high level information like the physical knowledges or causal relationships of failure rather than the logical states or process signals as the detail causes of failure. It is very difficult that the physical knowledges or causal relationships are to be implemented and verified. This paper proposes a methodology for tracking alarm by logic of alarms. This methodology uses the proper logical knowledges on the proven logic and alarm diagram or electrical alarm relay logic than the uncertain physical knowledges or causal relationships. This system is to display the highlighted alarm procedure related to the causes. The system can be used for operator to identify the detail causes of alarm without checking all candidates for causes in alarm response procedure and the logical states of alarm with alarm logic disgrams provided on CRT dynamically