Feature: SPE 6-part series
Article 2: What Are the Single Pair Ethernet Standards?
By Ruud Van Den Brink, product manager industrial communications and Manuel Ruter, senior principal engineer
IEEE, IEC standards Single Pair Ethernet (SPE) is an emerging communication standard that offers numerous benefits over traditional Ethernet connections. Te technology enables the use of more integrated strategies, such as the Industrial Internet of Tings (IIoT), to unlock significant gains in productivity and efficiency. As SPE technology becomes more widely used for Ethernet
connections in industrial applications, it is important to understand the industry standards that govern the technology. SPE can offer many benefits for cost savings and efficiency in industrial applications, but standardisation is essential for new technologies and helps ensure interoperability for likely every company, every customer, and a wide range of markets. In this second article in our six-part SPE series, learn more about standards that govern the technology.
SPE standards Te connectivity standardisation of SPE is covered in IEC 63171-6 (or -6 for short) and 63171-7 (or -7 for short). Inside the -6 and -7 specifications, there are different standardised connectors that are used in the SPE ecosystem as supported by the SPE industrial partner network. Tese range from IP 20 solutions to IP67 M12 hybrid connectors.
IEEE standards For decades, Ethernet technology has been standardised by the Institute of Electrical and Electronic Engineers (IEEE). Tis is also the body that sets standards for SPE technology. IEEE 802.3 Standards for SPE cover transmission speed and
transmission length. Te current standards are: • 2.5/5/10 Gbit/s: IEEE 802.3ch – MultiGigBASE-T1 = 15 meters shielded (link segment details) at 4 GHz bandwidth
• 1 Gbit/s: IEEE 802.3bp – 1000BASE-T1 = 40 m shielded (STP) or 15 m unshielded (UTP) at 600 MHz bandwidth
• 100 Mbit/s: IEEE 802.3bw – 100BASE-T1 = 15 m unshielded (UTP) at 166 MHz bandwidth
• 10 Mbit/s: IEEE 802.3cg – 10BASE-T1L = 1 km (“L”ong reach) • 10 Mbit/s: IEEE 802.3cg – 10BASE-T1S = up to 25m (“S”hort reach”) One key issue in industrial uses is the limited range of distance
that SPE can cover, which is typically up to 40 meters. In non- industrial uses this may not be a limiting factor, since the technology is oſten used in smaller spaces. However, in many industrial applications — especially those involving large manufacturing facilities or plants — there may be distances of 100 to 500 meters between equipment and systems. To address this, organisations such as IEEE are looking to extend
SPE standards to that level. For example, proposed IEEE 802.3 standards for SPE transmission speed and length would increase to: • 2.5/5/10 Gbit/s: IEEE 802.3ch – MultiGigBASE-T1 = Approximately 50 m added
• 1 Gbit/s: IEEE 802.3bp – 1000BASE-T1 = Approximately 100-250 m added
• 100 Mbit/s: IEEE 802.3bw – 100BASE-T1 = Approximately 200- 500 m added
Understanding the standards Understanding the SPE standards for your application and facility is critical to optimising performance when implementing this technology for automated systems. In the next article of this six-part series, get more details about what is necessary to implement SPE in an industrial facility.
Note: Tis article is the second instalment of a six-part series that will also include the following information: an introduction to SPE technology; what is necessary to implement SPE technology; answers to common questions about SPE; different types of SPE integration (brownfield vs. greenfield); and available solutions and components when implementing SPE. Read the previous articles here.
To learn more about SPE infrastructure solutions offered by TE Connectivity, visit:
https://www.te.com/en/
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42 November 2024
www.electronicsworld.co.uk
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