1783-BMS12T4E2CGP

1783-BMS12T4E2CGP

1783-BMS12T4E2CGP

由于以太网在重负荷下的低效率，应特别注意有效降低以太网的通讯负荷，尤其是在控制层使用以太网结构时。与控制网络相比，虽然操作层网络的实时性要求要低得多（一般来讲，由于人的视觉影响，操作画面数据刷新速度不宜高于1秒，否则操作人员容易疲劳），但是以太网由于具有传输不确定性的固有缺点，有效降低其通讯负荷总是有益的，为此可以采用三种办法，首先是采用更高速的以太网，譬如100Mbps快速以太网；其二是采用交换式以太网代替共享式以太网，以避免碰撞域，从而提高传输效率，典型代表就是MCS公司的MAX1000+系统；其三就是采用合理分段技术。这三种方法都各有其特点，在现有DCS中都得到了体现，鉴于前两种方法大家已经熟悉，这里就不再赘述，这里只简单讨论了第三种情况。

现货，现货，降降降，火火火，火火火……

现货，现货，降降降，火火火，火火火……

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◆ 企业名称：厦门泰尼电气有限公司

◆ 联系人： 小廖（女士）

◆ 电话：0592-6539066
   
◆ 手机：18965113601 

◆ 传真：0592-6890859

◆ QQ:1490371370

诚信经营，质量为首，服务至上，厦门泰尼小廖竭诚为您服务！！！

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