Until now, two twin wires for fast Ethernet (100 MB) or 4 twin wires for Gigabit of Ethernet were necessary to achieve high-speed data-rate transmission. Molex’s T1 SPE Connector System and Cable Assemblies enable the transmission of data by Ethernet using only two wires and the simultaneous power supply for terminals via power over data line (PoDL) up to 50W.

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Manufacturers are increasingly reliant on the internet of things (IoT) and the industrial internet of things (IIoT) to run their production facilities. To optimize the benefits of IIoT, a cost-effective and reliable method for integrating sensors/actuators from the field to the cloud is crucial. Therefore, a continuous and future-proof network philosophy is needed. Molex’s T1 SPE Connector System and Cable Assemblies permit a barrier-free connection of equipment, sensor/actuator technology and much more via end-to-end IP-based communications.

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As the sizes of sensors and other devices needed for IIoT shrink to accommodate the increased use of smart equipment on factory floors, cabling and interfaces must shrink too. Also, the proliferation of smart devices and sensors in industrial setting means that cable management is becoming more difficult. Molex’s T1 SPE cable assemblies use only 1 twisted pair with a gauge as small as 26 AWG (T1 SPE IP20) and 22 AWG (M12 T1 SPE IP65/67).

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Until now, two twin wires for fast Ethernet (100 MB) or 4 twin wires for Gigabit of Ethernet were necessary to achieve high-speed data-rate transmission. Molex’s T1 SPE Connector System and Cable Assemblies enable the transmission of data by Ethernet using only two wires and the simultaneous power supply for terminals via power over data line (PoDL) up to 50W.

Manufacturers are increasingly reliant on the internet of things (IoT) and the industrial internet of things (IIoT) to run their production facilities. To optimize the benefits of IIoT, a cost-effective and reliable method for integrating sensors/actuators from the field to the cloud is crucial. Therefore, a continuous and future-proof network philosophy is needed. Molex’s T1 SPE Connector System and Cable Assemblies permit a barrier-free connection of equipment, sensor/actuator technology and much more via end-to-end IP-based communications.

As the sizes of sensors and other devices needed for IIoT shrink to accommodate the increased use of smart equipment on factory floors, cabling and interfaces must shrink too. Also, the proliferation of smart devices and sensors in industrial setting means that cable management is becoming more difficult. Molex’s T1 SPE cable assemblies use only 1 twisted pair with a gauge as small as 26 AWG (T1 SPE IP20) and 22 AWG (M12 T1 SPE IP65/67).

This is not a definitive list of applications for this product. It represents some of the more common uses.

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This is not a definitive list of applications for this product. It represents some of the more common uses.

Why does Industry 4.0 need single-pair Ethernet (SPE) technology?
rnThe digitization of industrial plants has led to an increased need for Ethernet cabling. In fact, while transmission rates are fine in most instances, Industry 4.0 and the IIoT present new requirements for longer cable runs and miniaturization. Consequently, SPE technology is being embraced by standardization committees and has become a fixture in the next generation of communication architecture.

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For the very first time, SPE ensures the cost-effective use of Ethernet in every aspect of industrial automation. The technology uses 1 pair of wires to transmit data at speeds from 10 Mbps up to 1 Gbps and can work well in a cable run up to 1,000m making SPE ideal.

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What are the advantages of SPE over conventional Ethernet?
rnConventional Ethernet requires two or four pairs of wires; SPE requires only 1 pair. This newer arrangement reduces cabling costs and weight. Slim cables and connectors allow comprehensive connection of the most sophisticated sensors at field level, including PoDL with an output of up to 50W which means the sensors can be supplied with a both power and data interface even in extremely cramped conditions.

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What data rate can be transmitted over SPE?
rnThe single-pair Ethernet technology based on IEEE 802.3bp 1000BASE-T1, a standard for industrial sensors, delivers 1 Gbps transmission speed over only 1 pair of copper wires. IEEE professionals are currently working on a standard for even higher data rates of up to 10 Gbps (IEEE 802.3ch), which is required for high-resolution sensors and video transmissions.

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In addition, a standard for 10 Mbps (IEEE 802.3cg) is being developed. This standard enables transmission distances of up to 1,000m and can therefore replace almost all fieldbus types.

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Why does Industry 4.0 need single-pair Ethernet (SPE) technology?
The digitization of industrial plants has led to an increased need for Ethernet cabling. In fact, while transmission rates are fine in most instances, Industry 4.0 and the IIoT present new requirements for longer cable runs and miniaturization. Consequently, SPE technology is being embraced by standardization committees and has become a fixture in the next generation of communication architecture.

For the very first time, SPE ensures the cost-effective use of Ethernet in every aspect of industrial automation. The technology uses 1 pair of wires to transmit data at speeds from 10 Mbps up to 1 Gbps and can work well in a cable run up to 1,000m making SPE ideal.

What are the advantages of SPE over conventional Ethernet?
Conventional Ethernet requires two or four pairs of wires; SPE requires only 1 pair. This newer arrangement reduces cabling costs and weight. Slim cables and connectors allow comprehensive connection of the most sophisticated sensors at field level, including PoDL with an output of up to 50W which means the sensors can be supplied with a both power and data interface even in extremely cramped conditions.

What data rate can be transmitted over SPE?
The single-pair Ethernet technology based on IEEE 802.3bp 1000BASE-T1, a standard for industrial sensors, delivers 1 Gbps transmission speed over only 1 pair of copper wires. IEEE professionals are currently working on a standard for even higher data rates of up to 10 Gbps (IEEE 802.3ch), which is required for high-resolution sensors and video transmissions.

In addition, a standard for 10 Mbps (IEEE 802.3cg) is being developed. This standard enables transmission distances of up to 1,000m and can therefore replace almost all fieldbus types.