描述
6GK1102-4AA00
搞哪种FCS ?既然确定搞FCS,面对种类繁多的现场总线,应该搞哪种呢?分析现场总线多样性产生的原因,有助于理清这一思想。造成现场总线多样性的局面,一是因为行业习惯,如Profibus一直应用于PLC行业,FF应用于仪表行业;二是由于利益冲突,各工控厂商都不愿意放弃自己的标准而丧失已占用的市场份额。显而易见,现场总线标准完全统一尚为时过早。鉴于此,对于我国工控界的发展,建议采取以下策略:
短期目标根据具体针对的行业特征,如楼宇自动化、过程自动化等,选择这一领域有较好业绩的一种(或两种)现场总线,加以研究开发,一方面抢先推出自己有特色的产品,占领市场,产生应用价值和社会效益;另一方面在于重点掌握现场总线的本质和精髓,以不变应万变,万一选用的总线没能成为最终标准总线,由于各总线之间本质的相通性,因此也能很快转产到最终的标准总线。
长期目标掌握各总线的精髓后,扬长避短,制定中国自己的现场总线标准,振兴中国民族工控业。针对楼宇自动化行业,鉴于LonWorks现场总线在该领域中突出的业绩,我们开发研制出一种基于LonWorks通用网络型智能控制器节点产品和可视图形化控制组态平台——Visual Control Configuration 。该套产品特色在于目前国外大多数LonWorks产品开发商仍停留在集成Echelon公司提供的Neuron C 编程环境阶段,欲使用Neuron C 编制高效的控制应用程序,不仅需要熟悉这种高级指令语言本身,而且必须对Neuron1芯片的内部硬件结构、存储器的地址空间分配等各个技术环节有深入的了解和掌握,这对最终用户和现场技术人员来说显然是不现实的要求,可视图形化控制组态平台Visual Control Configuration很好地解决了这一问题,类似流程图的图形化表示方法,控制组态语言按照国际电工委员会IEC1131-3标准,将控制程序变为工程技术人员所构思的控制策略的图形化映象,而图元间的连接关系则表示控制算法的数据流程,有经验的现场 控制技术人员无须专门培训即可在短期内完成控制策略的编制,方便高效。目前,我们已在工程项目中应用该控制组态软件平台Visual Control Configuration 和LonWorks 通用网络智能控制器的节点,成功开发了南宁交通银行的出入控制系统。
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