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现场总线是指安装在制造或过程区域的现场装置与控制室内的自动装置之间的实现数字式、串行、多点通信的数据总线,它以数字通信替代了传统4～20mA模拟量信号及普通开关量信号的传输。但在工厂的实际使用中,因施工质量、电磁干扰等因素,会影
Fieldbus refers to the data bus that implements digital, serial, multipoint communication between field devices in the manufacturing or process area and automation devices in the control room. It replaces the traditional 4-20 mA analog signals with digital communications and General switch signal transmission. However, the actual use of the factory, due to construction quality, electromagnetic interference and other factors, will be shadow