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EULYNX Gateway

Protocol conversion module from any protocol to EULYNX

Relesoft EULYNX Gateway is a plug-and-play protocol conversion module that converts any protocol to EULYNX. It is ideal for infrastructure managers or OEM signalling suppliers who need to implement EULYNX by adding a conversion layer over their existing legacy systems. While it can handle other protocol conversions, its original purpose was EULYNX SCI conversion, and it is most effective in projects where EULYNX is part of the requirements.

Design Principles and Benefits

  • Flexible with extensive configuration
  • Installable by a field technician
  • Transparent to easily locate issues
  • Safe with comprehensive pre-validation and safety checks
  • Can be installed in 2oo2 redundant setup
  • Implemented and documented according to DIN_VDE_RaSTA_0831-200, EN_50126:2017, EN_50716:2023 and EN_50129:2018

Core Components

The EULYNX Gateway consists of four core components:

  1. Network Protocol Layer (RaSTA / UDP / TCP)
  2. EULYNX Protocol Layer (SCI)
  3. EULYNX Conversion Logic (formally proven compiler to ensure correctness)
  4. Adjacent System IO Protocol (e.g., Modbus, physical wires)

Simple commissioning and configuration
The system is configured using a human-readable and documented format. It can be configured even under operation.

Verified compliance
Automated verification ensures EULYNX Gateway always meets systems requirements. Each component is tested individually and as part of the whole system. The complete system can always be simulated before deployment.

Source code is available
Full access to the source code allows independent review, updates, and configuration.

Comprehensive documentation
The documentation covers all necessary knowledge for commissioning, configuration, and maintenance.

Recommended Project Plan for Protocol Conversion

The following high-level project is recommended to deliver potential customisations and to satisfy possible requirement to validate the delivery with the customer.

  1. Planning: Assess national requirements and targeted specifications.
  2. Test plan: Align tests to match acceptance criteria considering requirements.
  3. I/O Configuration and Mapping: IO mapping depends on the Adjacent System IO interface. This is often a proprietary protocol that Relesoft implements during the project. The required translation functionality is configured simultaneously and the different IO indications and commands are mapped with their counterparts in the EULYNX protocol.
  4. Testing and Simulation: Conduct FAT by simulating the deployed system with Adjacent Systems to validate correct behavior.
  5. Device installation: Prepare and deliver necessary devices for installation.
  6. Commissioning for Operational Use: Finalise with FAT/SIT/SAT before going operational.

Reference Delivery

EULYNX Gateway was successfully deployed in Finland’s POKA project for the Finnish Transportation Infrastructure Agency (FTIA), contracted by GRK Infra Oyj. The project involved enabling EULYNX SCI-CC protocol communication between TMS and a total of 55 relay interlockings. The project began with IO configuration mapping against protocol counterparts, with total software delivery costing approximately 20k€ per interlocking (including architecture, development and documentation). Devices were prepared for contractor and field engineer complete with installation and configuration instructions. Testing followed a structured plan including FAT/SIT/SAT phases, with maintenance services available upon request after commissioning.