CAN is also one kind of fieldbus. Originally, it's applied in the control systems of cars.
CAN 总线也是现场总线的一种，它最初被应用于汽车的控制系统中。
Nowadays, the technology of Fieldbus has become the hotspot in the research field of automatization and become the main method of communication and exchange of information in the DCS systems.
作为自动化领域的热点之一，现场总线已成为自动化系统与分散的现场设备间信息交换的主要技术。
Next, the paper discusses the communication mode of the current integrated Substation Automation Systems (ISA) and describes the hardware structure and the functions of the ISA with fieldbus.
其次，论述了目前变电站综合自动化系统（ISA）的沟通模式，并介绍了硬件结构和现场总线在ISA的职能。
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