摘要：PROFIBUS-DP是一个日趋流行的工业现场总线协议。目前，越来越多的工业控制系统采用PROFIBUS-DP。讨论了在塑料加工挤出机上引入该工业网络，将旧系统改造为PROFIBUS系统的方法。改造后的系统结构精简，抗干扰能力大大提高。
关键字：PROFIBUS-DP，现场总线，塑料挤出机

Abstract：In this paper, a method of upgrading a control system of the plastics extruder machinery from the non-FCS system to PROFIBUS-DP system, which results in hardware simplification and interference reduction, is discussed.
Keywords：PROFIBUS-DP, FCS, plastics extruder