3HAC025729-001

3HAC025729-001

3HAC025729-001

PC控制的新希望是Windows CE操作系统。其占用空间非常小，有实时性能。工业界已经看到WinCE的产品。
区别不同之处

有关PC控制最著名的成功案例大多来自于底特律的通用汽车Powertrain制造基地。在那里，分布在十几个工厂的超过300个PC每天工作在机器生产线。梯形逻辑PLC已经完全消失，向Powertrain提供新机器的OEM必须符合PC控制指标。

Nematron Corp公司的市场部经理John Dunlap解释说：“对于GM，关键的好处是PC所用的流程图软件。”1986年由位于Warren 的Hydra-matic工厂首先引入。工程师对软件的透明性和所提供高级诊断能力感到惊讶，宕机时间也大大较少。这个技术立即扩展到其他工厂。“但是实际很难准确得到时间较少的数值。因为Powertrain把它作为主要的竞争优势而笼罩着神秘气氛。”Dunlap说。

Nematron在1994从FloPro的发明人Ron Lavallee那里得到该软件，使其运行在Windows NT下，并且增加了自己的HyperKernel程序，可把NT分成250微秒间隔的时间片断，以保证实时响应。“奔腾III在250微秒内可以处理4,000个I/O，” Dunlap说。流程图软件与Nematron坚固的工业PC相结合在Powertrain已经被广泛接受。

另一个位于Ann Arbor---美国流程图软件中心的Entivity，是先前的Steeplechase Software公司、Think and Do公司合并而来。现在部分由Schneider Electric公司所有。工业经验丰富的Ken Spenser先生在Texas Instruments工业自动化部门出售给Siemens之前曾经领导该部门，担任总裁兼CEO。虽然Entivity的两个软件产品Entivity Studio和Visual Logic Controller的由来不同，它们都是基于流程图，并且进入各种行业的数百个不同的应用中。Entivity的网站(www.entivity.com) 有特别好的内容说明流程图软件的强大功能和在各种工业的应用。

ABB Power Board YTE 102C YT213001-AC/5 Refurbished

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ABB CONTROL INC. SEPT. 2000 PRODUCT INFORMATION CATALOG

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