Field buses are special local area networks, dedicated to data acquisition and the control of sensors and actuators. They typically run over low-Ccost twisted pair cable. They differ from many traditional LANs (such as Ethernet) in that they are optimised for the exchange of short point-Cto-Cpoint status and command messages. There are many Fieldbus standards that exist, each developed for a specific purpose.
KeywordsPreventative Maintenance Resource Block Controller Area Network Distribute Control System User Layer
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