FAQS

Where will SPE be used in buildings and commercial settings?

In business and commercial settings, SPE can be deployed for physical security door controllers, surveillance cameras, motion detectors, smart lighting, building- or city-wide automation and elevator control systems.

How can SPE be used in manufacturing facilities?

In manufacturing plants, SPE can be used to network automation and process control systems. In many situations, this would be a major upgrade on the plant floor away from serial bus technologies that have been in use for decades.

What are the advantages of a one network protocol?

Legacy plant and facility automation systems typically operated using one of several serial bus technologies as opposed to Ethernet. This created fully isolated networks. One for the manufacturing or facility network – and another for the corporate data network. 802.3cg will allow these networks to be combined natively. This is especially important as Industrial IoT and building automation systems begin to be managed from the public cloud.

Is SPE cabling easy to install?

One immediate advantage of SPE over 4-pair cabling is that it shrinks the cabling size and weight to 1/4 of a typical CAT6 cable. It will also be less expensive to purchase and install.

Can you reuse existing cable with SPE?

Migrating to single twisted pair offers a critical advantage in that it allows you to reuse existing cables, and especially Foundation H1, HART, PROFIBUS PA and 4-20mA connections. Benefits include an enormous installed base of Single Twisted Pair, usually shielded and sometimes certified, in the field that can be leveraged. Lengthy fieldbus cables are expensive to install (often in filled conduit) and end nodes would be easier to replace.

What is the goal of SPE technology?

The goal of new SPE technology is to connect devices at 10 Megabits per second over up to at least 1,000 meters, and offer the option of Power over Data Lines technology (PoDL) for remote power that would be especially useful in hazardous environments.

What are the advantages of SPE?

Single Pair Ethernet technology will be integral to the collection of OT and IoT data in buildings. Some of the advantages that SPE brings include:

    • Supporting more devices (sensors) in a link
    • Extending the physical reach of the cable beyond 100 meters
    • Taking up less space in cable pathways
    • Supporting power over data line (PoDL)
    • Standardizing to one network protocol
    • Adding security through 802.3
    • Offering wired connectivity to run simultaneous data and power over a single media
What is Single Pair Ethernet and why do we need it?

Traditional Ethernet copper cabling, which uses an 8-conductor, 4-pair (8C4P) cable construction, has been used for decades to transmit data over local area networks and more recently to deliver low power via remote powering methods such as Power over Ethernet (PoE).

However, with the rapid growth of the Internet of Things (IoT) and the need to provide cost-effective power, connectivity and security to billions of connected devices, there are gaps that exist in the current Ethernet wiring and application standards that limit the number of devices that can connect to the network via category-rated twisted-pair cabling. The most notable gap is that the physical reach of twisted-pair cable cannot exceed 100 meters (328 ft.) For example, there are numerous non-Ethernet protocols and devices used in industrial automation networks that have application distances up to 1 km that cannot be supported by the current Ethernet standards.

To address the emerging IoT and IIOT markets, the IEEE 802.3 formed the 802.3cg Task Force to develop a standard to address device support for twisted-pair cabling beyond 100 meters. The standard — IEEE 802.3cg 10 Mb/s Single Twisted-Pair —envisions a unified network based on single-pair Ethernet as an alternative to the hugely fragmented fieldbus landscape. The goal of new SPE technology is to connect devices at 10 Megabits per second over up to at least 1,000 meters, and offer the option of Power over Data Lines technology (PoDL) for remote power that would be especially useful in hazardous environments.

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