News 2023 04 SPE Kabel

Single-Pair Ethernet

The network infrastructure for the industrial IoT

The increasing digitalisation of industrial systems requires further development of existing Ethernet cabling. Especially when it comes to sensors and local, modular control devices, conventional cabling concepts are no longer able to cope with the new challenges in terms of space requirements and installation effort. Single-Pair Ethernet (SPE) was developed to simplify and improve data transmission in industrial applications. It offers a simple and cost-effective way to build Ethernet networks using the existing cabling infrastructure.

Consistent network connections up to the field level

Single-Pair Ethernet (SPE) is an Ethernet standard for data transmission over a single pair of wires (2-wire Ethernet) and is perfect for integrating intelligent sensors, RFID systems or high-resolution cameras into the existing industrial IP network. 

When developing new industry standards, Datwyler and its partners rely on innovative Single-Pair Ethernet technology. SPE enables the consistent and economical connection of a large number of end devices in the Industrial IoT – from sensors in the field to the cloud.

As a member of the SPE System Alliance, Datwyler offers a wide SPE cable portfolio: all of our cables meet the SPE transmission properties according to IEC 611156-11 and -12, from AWG 18 to AWG 26, in rigid and flexible versions as well as with various sheaths in PUR and LS0H. The products are available with both UL/CSA certification and the necessary fire resistance rating (CPR).

SPE Transmission Classes

The IEEE 802.3 has already published various SPE standards that can be used for applications with SPE.  The standard ISO/IEC 11801-1 specifies the requirements for the SPE transmission classes T1-A, T1-B and T1-C  (generic SPE cabling).

The table shows which Datwyler CU SPE 1P cable type can be used to achieve the maximum intended transmission distance (Channel). When using PoDL at the same time over the same pair of wires, the transmission length must, among other things, be shortened depending on the remote power supply class. 

You will find further information in our Single-Pair Ethernet selection guide.