ABB CI570 主现场总线控制器

现场总线控制是工业 .aspx" title="设备" style="text-decoration:underline;color:blue">设备自动化控制的一种计算机局域网络。它是依靠具有检测、控制、通信能力的微处理芯片，数字化仪表（设备）在现场实现彻底分散控制，并以这些现场分散的测量，控制设备单个点作为网络节点，将这些点以总线形式连接起来，形成一个现场总线控制系统。它是属于最底层的网络系统，是网络集成式全分布控制系统，它将原来集散型的DCS系统现场控制机的功能，全部分散在各个网络节点处。为此，可以将原来封闭、专用的系统变成开放、标准的系统。使得不同制造商的产品可以互连，是DCS系统的更新换代，大大简化系统结构，降低成本，更好满足了实事性要求，提高了系统运行的可靠性。不同通信协议的现场总线控制系统一般通过工业PC机内总线插槽的PC接口板与现场总线网段连接。

Fieldbus control is an industrial. aspx "title=" device "style=" text decoration: underline; Color: blue ">A computer local area network for device automation control. It relies on microprocessors with detection, control, and communication capabilities, as well as digital instruments (devices) Implement complete decentralized control on site, and use these scattered measurements and control devices as network nodes to connect these points in a bus form to form a fieldbus control system. It belongs to the lowest level network system and is a network integrated fully distributed control system. It disperses the functions of the original distributed DCS system on-site control machine at various network nodes. To achieve this, the previously closed and dedicated system can be transformed into an open and standard system. Enabling the interconnection of products from different manufacturers is an update to the DCS system, greatly simplifying the system structure, reducing costs, better meeting practical requirements, and improving the reliability of system operation. Fieldbus control systems with different communication protocols are generally connected to the fieldbus network segment through the PC interface board in the industrial PC bus slot.