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据美国Venture Development Corp.报告，PLC与软PLC/PC控制相比具有以下优点：
维修务系统健全，有经验的维护人员队伍庞大。
电源故障不会产生大的影响。
对低端应用，PLC具有较大的能价格比优势。
可靠无可比拟，故障停机少。
加固型结构，适合工业环境应用。
与PC机发展太快相比，PLC产品可长期供货，长期提供技术支持。
PLC在工厂自动化中的地位之所以如此稳固，原因在于：
PLC的技术具有长期的稳定，软硬件均应用方便，即插即用，价格适中，堪称工业控制的适用技术。
可以说当今工业控制所要求的能，PLC可满足85%至90%。其不足部分可用其它办法补充。近几年来PLC也在不断提高其技术内涵，融合了IT技术（包括以太网，因特网，无线网技术，现场总线技术，以及运用软件工程方法提升PLC的编程语言，开发全新的编程系统，等等）。
PLC在开放方面也有了实质的突破。**多年PLC被攻击的一个重要方面就是它的专有，现在有了较大的改观。PLC采用了各种工业标准，如IEC 61131，IEEE802.3以太网，TCP/IP，UDP/IP等，各种事实上的工业标准，如Windows NT，OPC等。
PLC在硬件上也有长足进步。微电子技术的进展全都运用到PLC中，元器件的集成度越来越高，促使PLC成本下降和可靠提高。专为PLC的设计的PLC-on-a-chip芯片业已问世多年。PLC的产品在体系结构和操作系统上都有了质的变化,能大幅提高。一个机架上可装多个模块。也出现了以Web为基础的PLC系列产品。
PLC、软PLC、IEC 61131在中国的未来
传统的PLC制造业不会在可预见的未来在国内建立和发展。但不排除软PLC在近期和可预见的未来，完全有可能在国内形成一定的气候。软PLC的I/O完全可以利用主流及一些有生命力的现场总线的系列产品。强实时操作系统可采用Windows CE，NTE，VenturCom的RTX以及其它；只要它们能实现控制的时间确定，即保证能以时间高度一致的方式执行控制指令序列，并具有可预测的结果或行为。加入WTO以后，中国成为"世界制造工厂"的进程正在加速。我们有足够的理由相信，PLC、软PLC在中国的销售的年增长率会显著**世界的平均年增长率。因此，对PLC、软PLC以及IEC 61131的推广应用，特别是高水平的技术支持变得十分重要。
随着现代工业的规模生产的发展，为提高企业的市场竞争力，引入管控一体化的体系结构ERP/MES/PCS，在国内已提到议事日程。作为基础自动化PCS层的主要工具-PLC的应对手段，应该是迅速加强PLC联网和通信开发能力，以及信息初加工的能力。在国内，就平均水平而言，精通或通晓PLC联网通信、PLC与计算机通信的技术人员，与今后的需要相比，还有不少差距。为此，急需采取措施，加强培训。CAMETA在这方面也应有所作为。
IEC 61131-3是目前的关于工控编程语言的标准。广泛应用于PLC、DCS、SCADA，甚至于运动控制。在国内IEC 61131-3的推广应用肯定大有作为。关键问题在于采用那些措施加快进程。
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