Leroy Automation

250 rue Max Planck
31670 Labege
Tel. +33 5 62 240 550




    LEROY AUTOMATION – Manufacturer of Rail Automation Components and Train Control and Monitoring System (TCMS) Specialists for fail-safe system architectures

    For nearly 35 years, LEROY AUTOMATION has been designing, manufacturing and integrating rail automation components for implementing train control and management systems (“TCMS”), computer-based train control (“CBTC”) and signaling solutions (“ETCS”).

    LEROY AUTOMATION offers commercial-off-the-shelf (COTS) products and turnkey bespoke design and integration services, covering a full range of control, communication, monitoring management and diagnostics in train and transit operations from speed sensing and automatic door control to heating, air conditioning, ventilation, brakes, fault indication, lighting control and traction power-pack automation...

    LEROY AUTOMATION holds ISO 9001:2008 and IRIS Rev.02 (international railway industry standard) certifications.

    LEROY AUTOMATION is also assessed as a sustainable and best-in-class corporate social responsibility practices company by ECOVADIS.

    LEROY AUTOMATION holds IRIS (international railway industry standard) certification based on ISO/TS 22163:2017.

    Embedded PLC for train control, communication, management and diagnostic systems

    LEROY AUTOMATION has manufactured more than 60,000 RIOM products deployed all around the world for use in railway automation applications under the most extreme conditions as Vehicle Control Units (“VCU”), Remote I/Os (“RIO”) and Communication Gateways.

    RIOM is an EN50155-compliant embedded programmable logic controller (PLC) designed to be integrated into train control and management systems (TCMS, CBTC and ETCS). Compatible with any train network interfaces (RS232, RS485/RS422, CAN2.0, MVB, LonWorks, Ethernet…), RIOM is a very versatile and flexible platform thanks to its multiple communication ports.

    Featuring very powerful processing capabilities, the RIOM is well-suited for real-time automation functions, to supervise train functions and operations or to drive communication gateways on any communication networks and protocols such as TCP and UDP sockets, EtherNet/IP – CIP, IPTCOM, MODBUS, PROFIBUS, PROFINET, IEC 61375 TRDP….

    Our PLC products can be programmed using the IEC 61131-3 STRATON workbench (PLCopen-compliant), or using C/C++ board support package for real-time Linux OS.

    Ethernet-based Remote I/O terminal for on-board rail and transit rolling stocks

    The BRIO product range is an EN50155-compliant remote I/O module for Ethernet-based networks embedded into railway applications.

    The specifications include:

    • Size-6U rack-mountable or standalone panel-mount solution
    • Full range power supply from 24Vdc to 110Vdc (train battery voltage-compliant)
    • Ethernet (M12) communication channel supporting the following protocols EtherNet/IP – CIP, UDP or Modbus/TCP.
    • I/O configurations:

    - 40 Digital Inputs and 10 Digital Outputs

    - 32 Digital Inputs and 16 Solid-State Relay Outputs

    - 2 Analog Voltage (±10Vdc) and 2 Analog Current type inputs (±20mA)

    - 1 Analog Output : 0-10Vdc and 0-20mA

    • Optional: RS485/CAN2.0 communication port

    Automation of electrical traction power substations

    The LT ENERGY product range is suitable for high-voltage switch management in electrical power substations. Input/output blocks are specially designed to control circuit-breakers, switches and isolating switches.

    The software programming tool is based on the IEC 61131-3 STRATON workbench from COPA-DATA.
    The main technical specifications are:

    • 1MB data storage
    • Embedded web server
    • FTP, NTP, SNMP V3…
    • MODBUS master and slave configurations
    • EtherNet/IP - CIP
    • IEC 61850 / IEC 60870
    • DNP 3.0 (Level 2)

    The secure input / output block can control four high-voltage switches. The command of the open relay outputs is four times redundant.

    Railway references

    RIOM products were embedded in high-speed trains, passenger trains, light rail vehicle, metros and transit rolling stocks as well as locomotives. The high-speed trains include the Alstom AGV world rail speed record train (574.8 km/h) and NTV (Italia).

    The passenger trains include PRASA in South Africa, West Coast Main Line and Juniper trains in the United Kingdom, Fortaleza in Brazil, Cercanias in Spain, DB Frame in Germany, Stockholm in Sweden and Copenhagen in Denmark, and Tage in Portugal.

    The tramways include Jerusalem, Lyon in France and Nantes in France as well as major international cities such as Istanbul and Ottawa. The metros include Budapest, Barcelona, Helsinki and Rennes with Siemens Mobility. Locomotive central control units have been deployed in Russia, Azerbaijan, Kazakhstan, and Middle-East countries.
    • Metro cars and driverless automatic metro cars in international capital cities and regional towns.
    • Suburban trains for the passenger rail agency of South Africa (PRASA)
    • Regional trains (Regiolis) through many French regions
    • Light rail vehicles (tram-train) for Ottawa in Ontario – Canada
    • Tramway cars (Citadis) for European cities
    • Locomotives (EP20, 2ES5, KZ8) for Russia and Kazakhstan
    • High-speed trains (TGV Euroduplex, AGV) for SNCF and RFF
    • and many more international projects.

    LT energy has been used by the 25kV French high-speed train lines (world FIP version) and the South Korean high-speed train network.



    A step forward to the new normal world...

    Post-pandemic insights from a reinvented mid-market player Eighteen months ago started an event that has dramatically changed the world, and all of us as individuals. Nobody could foresee nor anticipate how fast, and how far, the COVID-19 virus would spread as a global pandemic… The world health organization (WHO), national governments surrounded by committees of safety specialists and domain experts have been monitoring closely the virus evolutions worldwide, and all made pro-active emergency plans to contain the crisis as much as they could; but the coronavirus outbreak went “out of control”, creating major upheavals in politics, economics, environment, mobility, social behaviours and even philosophy.


    Rolling stock technology accelerated by IEC 61131-3 STRATON PLC On-board train control and monitoring systems (TCMS) applications

    LEROY AUTOMATION, a global leader and manufacturer of reliable rail automation components and on-board train control and monitoring systems (TCMS) architect, extends its software strategy with the IEC 61131-3 STRATON solution.

    As the preferred automation partner for international rolling stock manufacturers and railway subsystem integrators, Leroy Automation’s engineering teams support the railway industry and its operators for new built vehicles, as well as for mid-life train overhaul or modernization projects, with innovative on-board TCMS and rail automation solutions.



    Big Data, Cloud computing, Internet of Things (IoTs), Artificial Intelligence (AI)… Progress in the field of digital electronics have led in the recent years to a technology shift towards evermore “intelligent” embedded systems, able to control a wider spectrum of functions and subsystems in daily exploitation.

    This leads to an increased quality of service, faster and safer mobility solutions, and ultimately easier commuting for passengers from the departure point to destination.


    Highly-Reliable TCMS and Rail Controls by Leroy Automation
    Next stop – 61st RSSI C&S Exhibition!

    Toulouse, France – April 8th, 2022

    Have you also been waiting for the 61st edition of RSSI C&S trade show for a while now? So, guess what? It is finally happening! It will take place in Kansas City (MO) on May 16-18, 2022. This is a great opportunity to meet Leroy Automation at their stand #1418 located in Court “B”.
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    Train Control and Monitoring Systems (TCMS) and Fail-safe Rail Automation

    Toulouse, France – September 10th, 2019

    LEROY AUTOMATION, a global leader and manufacturer of reliable rail automation components and on-board train control and monitoring systems (TCMS) architect, will demonstrate its cutting-edge EN 50155-compliant products and high-end safety critical solutions at Railway Interchange (RI) 2019.
    Read full article

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