Products & Solutions

Single-pair Ethernet – the HARTING T1 Industrial

T1 connectivity makes Ethernet easy and affordable: in use from the cloud to the smallest sensor

One pair of wires is enough – Let's Twist!

Our little giant Tw1ster brings data and power on one pair of wires to previously unattainable locations, thus challenging existing bus systems. HARTING relies on an alliance of research, industry and standardisation for single pair Ethernet. As part of this alliance, international standardisation committees and in a multi-stage selection process have decided in favour of the Technology Group’s SPE mating face.  This also ensures planning security for the designers of new devices or sensor/actuator technology, permitting them to actively commence the implementation of SPE in the respective device technology.

Besuchen Sie TW1STER auf der Hannover Messe 2019 vom 01.-05. April

Tw1ster doesn’t just have superhero visions with its single-pair Ethernet transmission, it also has an industry standard IEC 61076-3-125 to its name. After a multi-stage selection process, the international body of standards, the IEC, has elected the HARTING T1 Industrial as the future of single-pair Ethernet mating face for industrial applications. We congratulate our hero and we will continue to work to ensure it remains as the industry standard for the forthcoming future.

Brilliant! Tw1ster is now standardised according to IEC 61076-3-125

The development towards ever smaller and more efficient devices in the IT world is well known. Yet, this trend is also found in other lines of business. Despite higher transmission rates and the parallel transmission of power (remote power feeding), cabling components need to be ever smaller and lighter. Based on transmission standards in accordance with IEEE 802.3, the new single-pair Ethernet technology SPE has just been integrated into new generations of automobiles and replaces CAN and other bus systems there. Controls, communication and safety functions are going to run uniformly on Ethernet in the future. This is a basic prerequisite for networked or later also autonomous driving.

SPE is now making possible the transmission of data by Ethernet using only two wires and also a simultaneous power supply of terminals via PoDL – Power over Data Line. Until now two twin wires for Fast Ethernet (100 MB) or four twin wires for gigabit of Ethernet were necessary to achieve this. One would like to use these advantages also in industrial automation. Here SPE permits the barrier-free connection of equipment, sensors/actuator technology and much more via end-to-end IP based communication up into the field level. This simple sensor or camera equipment, reading and identification equipment and similar with Ethernet interfaces help to implement Integrated Industry and IIoT.

Single-pair cables and connectors save space as well as weight in the application

Here SPE delivers the decisive difference compared with bus systems or electric current interfaces, as, they still can be found in the field level today. This makes the field level  smart and reduces the effort with regard to parameter setting, initialisation and programming. Set-up, operation and maintenance of equipment becomes more efficient and more cost-effective. SPE in machines, robots and in rail technology contributes in addition to weight and space-savings. The complete wiring is simpler and moreover considerably faster to install.

End-to-end compatibility of devices, cables and connectors

The end-to-end compatibility of devices, cables and connectors is a prerequisite for the widespread use and consequently the successful marketing of SPE technology. This is ensured by the international standardisation (ISO/IEC and IEEE 802.3). At the beginning of 2018, there was a selection process held internationally by ISO/IEC for the cabling and the selection of a standardised SPE mating face, in which more than 20 national expert committee participated. This selection has seen two mating faces prevail:

With SPE and a miniaturised interface, HARTING opens up completely new possibilities in automation
  • For building wiring, the mating face according to IEC 63171-1: this mating face is based on the proposal from the company CommScope and is known under the synonym variant 1 (LC style) for M1I1C1E1 environments
  • For industrial and industry-related applications, the mating face according to IEC 61076-3-125: this mating face is based on the proposal of HARTING and is specially designed for use in up to M3I3C3E3 ambient conditions and is known as variant 2 (industrial style). This SPE connector concept can achieve 1 GBit/s for shorter cables and 10 MBit/sec for longer distances with a mating face that is plug-compatible with each other.

MICE (mechanical, ingress, climatic, electromagnetic) describes environmental conditions for installations and therefore provides planners and users with valuable information on the specification of technical equipment and cabling/wiring. As part of this, the essential requirements for mechanical robustness (M), IPxx degree (I), chemical and climatic resistance (C) and electromagnetic safety (E) are described. M1I1C1E1  describes an environment just how it can be found in an office building and M3I3C3E3 describes a very extreme environment just how it can happen in industry or outdoors.

For HARTING, SPE is a technology topic and a start for many new product developments.

For the user, however, SPE is not only an opportunity but also a challenge. Is the new technology just as safe as the existing solution? Can SPE also be used in process automation with line lengths of 1000 m? How much power can the end device use? When will SPE connectors and cables be available and are these adequately standardised? HARTING takes these questions very seriously and has decided to answer them as part of a technology partnership.

The initiative helps the Federal Ministry for Economic Affairs and Energy with the WIPANO programme - "knowledge and technology transfer through patents and standards". HARTING, the University of Reutlingen and LEONI are working in the multipurpose project NG200 on the pressing questions of SPE and are introducing the results into the international standardisation simultaneously. Recently this has been an important step in the direction of weight- and space-saving wiring with the IEC 61076-3-125 for an industrial-suited single-pair mating face.

Continued work is being done in the IEC 61156-xx on the SPE cables and in the ISO/IEC JTC 1/SC 25/WG 3 and in the IEC SC 65/JWG 10 on the associated cabling standards ISO/IEC 11801 and IEC 61918 with installation guidelines and limit values for SPE. In a further step within the multipurpose project, the question of where the technical limits of SPE communication channels lie will be pursued. As of 2019, the user for SPE will have not only products but also valid standards as well as guidelines on installation and the testing of the components. The HARTING technology partnership provides support to the customers with implementing SPE and therefore real competitive advantages. On the basis of this mating face, HARTING is preparing a comprehensive product range for the industry.

Besuchen Sie TW1STER auf der Hannover Messe 2019 vom 01.-05. April

Check out here the technical article about the T1 Industrial.