The latest IEEE 802.3 standard has enhanced power capabilities and data transports for both industrial and automotive markets. With this breakthrough, PoDL and SPoE technologies have been making their way into the market. Learn more about these technologies in this brief overview.
What is PoDL?
PoDL stands for Power over Data Lines (PoDL) and delivers from 0.5 to 50 watts of power from 12, 24 or 48 volts DC power classes. This technology was originally designed to provide power to sensors, cameras, etc used most commonly in automotive markets. PoDL enhances Single Pair Ethernet (SPE) which is Ethernet over a single twisted pair of wires.
As opposed to previous IEEE 802.3 PoE standards for 4-pair category cabling, PoDL was designed to meet the needs of the automotive market, which demands greater flexibility when it comes to powering voltage classes.
With this technology, network cabling provides both power and data transport functions across a single cable which can reduce costs by enabling a more simplified deployment, through utilization of Ethernet standards throughout the entirety of a local network.
What is Single Pair Power over Ethernet (SPoE)?
In order to understand SPoE one must first understand the 10BASE-T1L variant of Single Pair Ethernet (SPE). 10BASE-T1L provides the necessary infrastructure for industrial applications. The 10BASE-T1L standard allows industrial data communications to reach higher speeds over longer distances over a simple one-pair balanced conductor. This improves and replaces decades of legacy protocols that have traditionally been used in this space.
SPoE is similar to PoE or PoDL but is targeted towards the industrial markets with both Power and Data over a single twisted pair of wires, and delivers from 1.23 to 52 watts of power from 30 or 50 volts DC power classes. SPoE-compliant switches and endpoints allow remote network additions and upgrades to be simple and fast, without requiring local device power.
Differences & Benefits of PoDL and SPoE?
PoDL spans short range (up to 30-40m) and is designed for the automotive industry by reducing the need for longer cabling, reducing costs, and overall weight reduction in vehicles.
PoDL delivers from 0.5 to 50 watts of power from 12, 24 or 48 volts DC power classes.
What PoDL means for the automotive industry
- PoDL enhances SPE which is Ethernet over a single twisted pair of wires.
- Network cabling provides both power and data transport functions across a single cable
- Allows remote network additions and upgrades to be simple and fast
SPoE spans a long range (up to 1000m) and is designed to support industrial markets. SPoE provides power and data, over a single twisted pair of wires. It offers standards-based testing for interoperability.
SPoE delivers between 1.23W and 52W, depending on output voltage, cable length and power demand.
What SPoE means for the industrial industry:
- Combines with 10BASE-T1L and future T1L for increased data bandwidth
- Allows power and data to exists on a single pair of ethernet, ultimately, reducing costs
- Easy to install and implement
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