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来自ABB在比利时Zaventem的Flavio Tolfo解释了数字技术如何带来了诸多好处,以及公司在提供产品时如何运用这一优势。历史上,现场设备和控制系统之间的通信不是对等的,需要用4～20mA电流回路接口。这种广泛运用的技术运行良好,并允许正确传输测量的过程变量,以及有效的闭环回路控制。现场总线使用数字技术——在技术上,它是一种用于仪器仪表和其它工厂自动化设备的数字化、双向的多点通信系统,因此它们有足够的潜力来提高工业控制系统和现场仪器仪表之间的通信。它明显地简化系统结构,相应地节约了现场的布线、控制
Flavio Tolfo from ABB in Zaventem, Belgium, explains how digital technology offers many benefits and how companies use it to deliver their products. Historically, communication between field devices and control systems was not equivalent and required a 4-20 mA current loop interface. This widely used technology works well and allows the correct transmission of measured process variables as well as effective closed-loop control. Fieldbus uses digital technology - technically it is a digital, two-way, multi-point communication system for instrumentation and other factory automation equipment, so they have the potential to improve industrial control systems and field instrumentation Communication between. It significantly simplifies the system structure, saving on-site wiring and control accordingly