
SYSTEREL
Hall 3.2
Booth 210-E
#safety #realtime
#critical #formal
#cybersecurity #interlocking
about us
Critical systems, Innovative engineering
For 25 years, Systerel has been supporting its clients to achieve performance and success in the fields of safety-critical software and functional safety by designing cutting-edge solutions that provide significant competitive advantages.
Systerel specializes in critical software and RAMS (Reliability, Availability, Maintainability, Safety).
Its expertise covers a wide range of skills:
- Development, verification and validation or software assessment at all safety levels
- Production of a complete safety case through to certification approval
- Related activities: methodology, architectural study, tools, etc.
Systerel competitive advantage lies in its ability to combine:
- Key technological expertise (B method, SCADE, Model Checking, Simulink + Design Verifier, Ada, PikeOS)
- Rigorous development processes that comply with standards (DO178B, CENELEC, IEC61508, MIL-STD, etc)
- Industry-specific RAMS techniques and methodologies.
Systerel offers highly innovative and competitive solutions;
- S2OPC: Open-source, secure and certified implementation of the OPC UA standard
- S3 (Systerel Smart Solver): Formal verification and safety proof of systems and software
- OVADO²®: Automatic formal generation and validation of critical configuration data
- BLAST: Automated balise layout assistance for railways
- B2BT: Back-to-Back Testing
- IXLBuilder: Safe control-command implementation on PLCs
- Railway Line Data Visualization Solution
Since its creation in 2001, Systerel has developed and consolidated strong expertise in the railway transportation domain (mainline rail, metro, and light rail), covering:
- Wayside equipment for signaling, interlocking and control systems
- On-board equipment embedded in locomotives and railroad cars
- Commissioning, Testing, and Maintenance tools used during system design, integration, and operational phases
We are primarily involved in critical systems engineering (up to SIL 4) on projects such as ERTMS, CBTC, interlockings, speed control systems, and onboard display systems.
We deliver solutions across all system lifecycle phases, from preliminary studies to deployment: requirements and specifications, development, V&V, and safety studies.
Whether in specification, design, development, or integration, Systerel is involved in projects such as:
- A full SIL 4 tramway interlocking implementation on a programmable logic controller (PLC), covering the entire process from software specification through certification authority approval.
- Functional and safety-related developments (Ada, B method, and formal proof) up to SIL 4, including equipment testing on target and host platforms, test simulators, functional interfaces, and other components interfacing with CBTC application environments
- Development of wayside Zone Controller (ZC) software for automatic CBTC metro systems using formal methods (SSIL 4)

IXL Builder — Safe Control-Command Implementation on PLCs
Turnkey solution for the development and certification of safety-critical railway control-command systems, up to SIL4, in compliance with CENELEC EN 50126 / 50128-50716 / 50129 standards.
A proven methodology, from signaling principle to commissioning.
Dedicated tools for formal proof and automated test generation and execution on PLCs.
Proven deployments on industrial PLCs as HIMA, adaptable to the hardware platforms of major industrial suppliers.
Including HMI (beyond the core control-command layer) tailored to operational needs: non-safety HMI, and SIL2-certified HMI.
IXL Builder is designed for system integrators, infrastructure managers, and railway OEMs seeking a certifiable, fully tooled, and field-proven control-command solution.

SnS Family — Safe & Secure Interfaces for Railway Wayside Objects
The Safe and Secure product family is the outcome of a four-year R&D program aimed to replace analog cabling between control systems and wayside objects (signals, switches, and more) with a certified digital interface without compromising on safety or cybersecurity.
Built around a common motherboard, with interchangeable particularization boards, it enables modular deployment across various use cases.
Physical segregation, formal methods, security by design form the core of the architecture.
SnS StaR: Safe & Secure Static Relay (digitally controlled relay) to eliminate the need for dedicated safety cables across the architecture.
SnS IO Link: Safe & Secure IO Link to connect any IO-Link compatible field device, built-in OSSD outputs to natively support safety functions.

S2OPC, GDS, Aggregator
Our OPC UA solution is open source, certified and CSPN-certified by ANSSI (with cross-acceptance by Germany’s BSI/BSZ).
It ensures secure, interoperable data exchange and supports the implementation of Eulynx interfaces, enabling seamless integration of signaling systems and compliance with European standards.
The Global Discovery Server (GDS) simplifies OPC UA certificate management, automating trust, renewal, and revocation.
Aggregator serves as a single cybersecurity point, collecting data once from trackside or onboard systems and redistributing multiple times, thus reducing complexity and enhancing real-time monitoring for rail operators.
Our solutions empower secure, efficient, and standardized digital transformation in the railway sector.
OUR ECO-RESPONSIBLE COMMITMENTS
As an actor in the digital world, Systerel has taken active steps to minimize its environmental impact. The company is a proud signatory of the Planet Tech’Care manifesto, committing to measuring and reducing the environmental footprint of its services. In addition, Systerel has implemented initiatives for effective electronic waste management and actively encourages its employees to engage in environmental and community-focused activities. Furthermore, Systerel was awarded the Silver Medal from EcoVadis, the world’s leading provider of sustainability assessments.
CONTACT US

1115 rue René DESCARTES, 13100 Aix-en-Provence – FRANCE
Email : patricia.langle@systerel.fr
Mobile : +33 (0) 6 30 84 49 74
www.systerel.fr