Fieldbus applications have developed over the past decades from simple analog communication to digital communications over serial networks. These serial networks often operate over a single twisted pair. With the increasing scrutiny on security of fieldbus systems and the increasing desire to simplify the data flow from sensor to cloud, the advent of Single Pair Ethernet technology seems both well-timed and well-planned. Single pair cabling with LC-style connectors make sense, adding simplicity and reducing time to work for data transmission to the edge.

There are four areas where SPE generally can match or improve upon fieldbus technology: topology, security, power, and data.

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