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The Powerline PLUS Train Backbone (PTB) enables deterministic, train-wide communication for the Full Digital Freight Train (FDFT) – without additional data contacts and without separate communication cabling.
PTB transmits Ethernet- or CAN-transparent data over the train’s existing power distribution cable, eliminating on-train infrastructure complexity at its root.
Validated across two European demonstrator programmes and in continuous rail freight operation since March 2023, PTB delivers proven backbone performance — not projected capability.
Freight wagons operate under mechanical shock, vibration, ice, dust and extreme temperature variations – across hundreds of wagon types and under severe cost pressure.
Architecture must minimise complexity and interfaces. Every additional electrical contact or cable increases both operational risk and lifecycle cost.
A backbone for the Full Digital Freight Train must reduce interfaces, not introduce them.
PTB uses the train power distribution cable for data transmission with Powerline Communication. This enables a very simple backbone architecture without a separate data network with additional cable harnesses and data contacts in the Digital Automatic Coupler (DAC).
Switzerland’s rail innovation philosophy is based on a clear principle: Technologies are validated in operation before large-scale deployment.
Within the Swiss DAC+ demonstrator programme, PTB has been installed on freight wagons and operated continuously under real rail freight conditions.
Extensive testing across coupling cycles, shunting operations, long-distance routes and varying environmental conditions has confirmed stable and predictable system behaviour.
This validation approach reduces rollout uncertainty and anchors decisions in measured performance.
PTB reuses the existing train power distribution cable as communication backbone. One cable for power and data. No additional data network needs to be installed along the train.
Avoiding such a second network reduces installation effort, limits certification risks and significantly lowers material and lifecycle costs compared with architectures requiring dedicated data cabling.
•Rail freight operators – Reliable automation without increasing operational risk
•Wagon keepers – Fast, repeatable retrofit across diverse wagon fleets
•Authorities & regulators – Field-validated technology with predictable behaviour
•System integrators – Ethernet-transparent IEC 61375 or CAN compliant backbone without added complexity
By eliminating additional on-train infrastructure and validating performance in real operation, PTB reduces technical, economic and deployment risk for large-scale DAC rollout.
PTB provides the simplest validated backbone architecture for digital rail freight automation.
© plc-tec AG
plc-tec is a Swiss high-tech SME, driving the future of digital and automated systems with our cutting- edge Reliable Power Line Communication (PLC) solutions, ensuring robust, reliable, and efficient communication networks.
Contact
Email: info@plc-tec.ch
Tel: +41 79 330 4151
Postal: 5607 Hägglingen/Switzerland