"配置平面图" can be translated as "layout plan" or "configuration floor plan" in English, depending on the specific context.
"Layout plan" is a more general term that can be used in various fields to describe a plan showing the arrangement or configuration of elements within a space.
"Configuration floor plan" is a more specific term that emphasizes the arrangement or setup of elements on a particular floor or level, often used in architectural or engineering contexts.
In most cases, "layout plan" would be a suitable and commonly understood translation.