随着计算机技术和网络技术的发展，越来越暴露这种多层次计算机系统在数据采集，管理，数据和知识的共享，硬软件资源共享，数据通信，软件开发等等中的各种弊端，特别是在设备控制，过程控制，生产控制之间。以至很早就有人提出管控一体化，或者控制系统就是管理系统的观点。美国西屋过程控制的WDPF Ovation系统就是基于这种观点开发的，可以预计今后更多的工业过程自动化系统将会朝着这个方向发展。
由于计算机技术，特别是芯片技术的快速发展，按照摩尔定律微处器芯的速度性能每18个月将提高一倍。因此，当Intel Pentium处理器问世后不久，Pentium 2，3以及主频为1.4GHz的Pentium 4处理器就相继提供给市场。当广大用户还未来得及使用Pentium 4处理器时，5月29日Intel和HP两家公司就联合推出了64位的Itanium微处理器。自动化系统设备制造商和集成商难以跟上硬件技术的发展，往往出现自动化系统设备制造商和集成商的自动化系统设备的更新，发展。滞后于计算机技术的发展。
另一方面，当前的各种PLC和DCS的开发工具软件都是和制造商的硬件系统设备捆绑在一起的，即某一制造商的PLC或DCS的开发工具软件，只能在该制造商提供的硬件上使用。对于使用多种PLC和DCS的用户就要熟悉和掌握多种PLC和DCS的硬件和软件，使用户要投入大量人力和财力，当更换新的第三方的PLC和DCS时，就得重新进行人员培训，造成人力资源极大的浪费。同时也使具有高技术含量的开发工具软件的销售受硬件设备销售的制约。
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