As industrial performance improvement initiatives such as Industry 4.0 and the industrial internet of things (IIoT) become commonplace, the need for a resilient and site-wide networking infrastructure is paramount. Single-pair Ethernet takes the enterprise-class networking protocol and implements robust and reliable device communication over a single twisted pair. Reducing the number of pairs by a quarter reduces cable weight, reduces cable cost, and uses robust industrial-grade widely available connectors. Unlike the serial-based IO-Link, SPE functions as a standard networking protocol and can operate over distances of up to 15 meters using unshielded cables and 40 meters using shielded cables.

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