ABB PFVO142集散控制系统（Distributed Control System－DCS）集计算机技术、控制技术、通信技术、CRT技术于一体，广泛应用于生产过程控制系统。随着计算机和网络技术的飞速发展，产生了一种新型的控制系统———现场总线控制系统（Fieldbus Control System－FCS）。但国内生产企业的情况是：大多数企业还处于模拟仪表和人工控制的阶段，采用DCS控制系统的企业仍是少数。由于DCS应用广泛、技术成熟，在现有的技术条件和市场条件下，FCS还不能完全取代DCS，而且目前现场总线设备和系统还十分昂贵。因此，除了新建企业外，国内企业在较长时间不可能全面采用现场总线技术，ABB PFVO142而必须走逐步发展、过渡的道路。另外，在厂部设有总调度室，但是总调度室的监控水平较为落后，改造之前基本上不能对各个生产单元进行监控。为了适应生产需要，提高生产效率，改善操作条件，加强监控手段，确保各生产装置的正常运行，ABB PFVO142急需对各生产单元和总调度室进行技术和设备的更新改造，从而能在总调度室对各装置进行监视管理，及时了解各装置的运行情况，达到指挥及时和调度准确的目的。现场监控系统的改造要充分利用原有仪表和设备，主要考虑可靠性和实时性。首先对自控程度较高的3个单元进行改造，期污水处理生产单元控制设备配置了两套ALLEN－BRADELY公司PLC设备。25块开关量输入信号卡，可采集384点信号；7块开关量输出信号卡，可输出112点信号；3块模拟量输入信号卡，可采集24点信号。两套AB—PLC通过DH＋（数据高速通道）实现数据共享。在原有的现场控制计算机上分别增加以太网卡，通过以太网将实时数据送到总调度室处理。输出192点信号；1块模拟量输入信号卡，可采集8点信号。系统运行采用遥控开关操作与全模拟流程盘显示。在原有的Siemens S5－115UPLC上增加RS－232通讯模块（CP524）和1台现场操作站，用点对点方法连接，使PLC的数据通过现场操作站送到以太网上，与总调度室监控计算机通信。但RS－232传输速率只有9600bps，操作站仅对现场起到监视作用。

每走一步，首先想到的是客户

尊重客户，理解客户，持续提供超越客户期望的产品与服务，做客户们永远的伙伴。

这是我们一直坚持和倡导的服务理念。

公司一直坚持5s服务理念-微笑、速度、诚信、技巧、

经营一个“以顾客为中心”的公司是我们一直努力的方向！

金杯银杯不如客户的口“碑”!

随着工控行业网络建设的不断深入，“与客户共赢”的经营理念更为重要，

这项工作做得好坏与否，将直接影响到客户对我们的信任和满意,

对于现在这个价格战嚣张的年代，我们也一直坚持在走产品品质路线，

很多客户跟我们合作了，认可我们的质量，我们帮助客户赢得了订单，

同时客户也给我们下单了，我想这种双赢的局面才是真正的生意。真正的合作！

我们认真的去了解客户需求，做的就是一个诚信的公司，提升客户满意度，长期合作。重合同、守信用，基础力量雄厚,备货充足!

公司有强大的营销网络，能为用户提供国外各种系列品牌的PLC.DCS备品备件,

还能为用户寻找偏冷门及停产的品种。

薄利多销,竭诚为广大用户提供全方位的服务。公司全体员工迎欢您的垂询！

我们永远站在客户的角度上不断开拓、创新。真诚的期待与您的合作!

部分现货 大量库存 欢迎来电咨询 真诚报价

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