According to the controller software framework of the FCS1 65 fieldbus control system,the ad-vanced virtual distributed processing unit (DPU)technology was applied to design the virtual software. Moreover,module such as the function block algorithm,internal database,configuration file conversion and calculation engine running module were integrated on platform of the Windows XP,and the computer re-sources optimization technique was employed to make the virtual software have good performance.Test re-sults show that this software has high efficient executive ability to build virtual DPU units for the whole u-nit on a single computer.%应用先进的虚拟分散处理单元(DPU)技术，按照 FCS165现场总线控制系统控制器软件的功能结构，设计了其虚拟 DPU 软件。并将功能块算法、内部数据库、组态文件转换以及计算引擎运行等模块在 Window XP 上进行整合，运用计算机资源优化技术，使该虚拟 DPU 软件具有优良的性能。测试结果表明，该软件能够在单台计算机上设置机组虚拟 DPU 站，并且具有高效执行能力。
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