Manufacturing & Industrial folks pay attention to the emerging IEEE P802.3cg standard targeted for publication in less than a year, late 2019. This standard has been in the works for a while, IEEE approved the initial project documents in late 2016. It’s known as Single-pair or BASE-T1 Ethernet; 10 Mb/s Ethernet, with power delivery out to at least 1000 meters, over 1 pair of copper.
Here is a great article from our friends at Siemon:
IEEE P802.3cg, “Physical Layer Specifications and Management Parameters for 10 Mb/s Operation and Associated Power Delivery over a Single Balanced Pair of Conductors” addresses the emerging application commonly referred to as single-pair or BASE-T1 Ethernet. This game-changing application is positioned to fill the gap in industrial automation and other low-speed connections with non-proprietary cabling, while also providing a path for them to merge with the Internet of Things (IoT). Single-pair Ethernet will offer several advantages, including reduced cost, operation over distances greater than 100 meters, delivery of dc power, and potential compatibility with traditional four-pair network cables and connectivity, making it an attractive alternative to traditional fieldbus communication protocols.
In response to this emerging technology, both TIA and ISO/IEC standards organizations are developing single balanced twisted-pair cabling specifications, and both recently selected the single-pair connector form factor specified in IEC 63171-1 based on the LC optical fiber form factor for use in enterprise and intelligent building commercial environments and the ruggedized form factor specified in IEC 60176-3-125 for use in light and heavy industrial environments.