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自20世纪70年代后期进入中国以来，PLC已经广泛地用于工业生产中几乎每一个角落。虽然国产PLC有了长足的发展，但是与国外品牌依旧存在一定的差距。
首先，是技术方面的原因。早期的PLC技术相对封闭，开放性不够，缺乏一个通用的技术平台，国内研发单位很难得到前沿的PLC核心技术，需要长时间的不断尝试和摸索。“七五”和“八五”期间，国内部分研究单位在PLC研发上进行了科技攻关，取得了一些攻关成果，也基本具备了自主研发PLC的能力。但是，缺乏持续研发和产品化能力，最终没能形成规模经营。
第二，是资金问题。PLC既是专业产品，也是自动化领域的一个通用产品，要形成规模经营必须具有较大的资金投入。有人意识到了开展PLC业务的重要性，但资金不够；有人有资金，却认识不到其长远价值。应该说，部分国产PLC产品确有其独到之处，但由于缺乏足够的资金支持，无法形成规模经营。作坊式生产或者受短期盈利目标的约束，使其无法形成再投入和扩大再生产，制约了产品的健康发展。
第三，是制造工艺问题。在10年前甚至5年前，国内的制造环境如生产工艺、模具制造、质量控制等方面仍存在较大欠缺，无法满足工艺要求较高的PLC批量生产。
第四，面临的是一个与大批国际跨国公司竞争的成熟市场，如何有效地将产品推广出去尤为重要，而国内公司恰恰缺少一支具有独到经营理念的市场队伍，市场开拓力量薄弱。
最后，是体制问题。原来许多做PLC的是研究所或者国营企业，体制和机制问题限制了PLC的产业化发展。
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