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Leroy Automation News
LEROY Automation presents Innovative Solutions for On-board Signalling
LEROY Automation offers field-bus communication gateways specifically designed for the railway market in order to interconnect these types of equipment while respecting the required levels of requirements.
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The architectures of embedded electronic equipment for on-board signalling in railway rolling stock vehicles are becoming increasingly complex due to various factors. These factors include the evolution towards more efficient systems like the European Rail Traffic Management System (ERTMS) and European Train Control System (ETCS), the integration of heterogeneous equipment, and the need to ensure compatibility with both legacy and innovative solutions.
Key Challenges in On-board Signalling
- Several challenges shape the design and development of on-board signalling systems:
- The evolution towards increasingly efficient systems, such as the European Rail Traffic Management System (ERTMS) and European Train Control System (ETCS) ;
- Integration of heterogeneous equipment and devices from multiple suppliers ;
- Mixing the interoperability of legacy product generations with up-to-date innovating solutions ;
- Interfacing and connecting multiple media and communication protocols often linked to manufacturers : Ethernet with PROFINET, EtherCAT and EtherNetIP, CAN and CANopen, serial links with PROFIBUS and ModBus, current loops, etc
Furthermore are security, operational safety and availability requirements specific to the railway market, as well as the need to be able to upgrade older systems as part of technical upgrades and retrofits.
The Role of Communication Gateways in Railway Systems
LEROY Automation’s Communication Gateways
In this context, communication gateways are necessary in order to make these different electronic devices to communicate with each other. LEROY Automation offers field-bus communication gateways specifically designed for the railway market in order to interconnect these types of equipment while respecting the required levels of requirements.
LEROY Automation designs and manufactures two types of such communication gateways, specifically designed for the railway market and fully compliant with the EN 50155 standard:
1. Serial Link Gateway (SLG) Product Family
Serial Link Gateway (SLG) product family is a comprehensive range of DIN-rail field-bus communication converters for on-board railway applications.
2. BRIO – Decentralized Remote I/O Module
BRIO is an Ethernet-based decentralized-remote input/output module designed to be embedded into on-board rolling stock vehicles. It features multiple communication links such as Ethernet, MVB, CANopen, RS-485/RS-422 serial links, and can also integrate protocol converter functions with I/Os capabilities. It is fully compatible with IEC 61131-3 STRATON PLC programming solution for process control and monitoring applications.
Below are 3 examples of such communication gateways:
The Role of Communication Gateways in Railway Systems
LEROY Automation’s Communication Gateways
In this context, communication gateways are necessary in order to make these different electronic devices to communicate with each other. LEROY Automation offers field-bus communication gateways specifically designed for the railway market in order to interconnect these types of equipment while respecting the required levels of requirements.
LEROY Automation designs and manufactures two types of such communication gateways, specifically designed for the railway market and fully compliant with the EN 50155 standard:
1. Serial Link Gateway (SLG) Product Family
Serial Link Gateway (SLG) product family is a comprehensive range of DIN-rail field-bus communication converters for on-board railway applications.
2. BRIO – Decentralized Remote I/O Module
BRIO is an Ethernet-based decentralized-remote input/output module designed to be embedded into on-board rolling stock vehicles. It features multiple communication links such as Ethernet, MVB, CANopen, RS-485/RS-422 serial links, and can also integrate protocol converter functions with I/Os capabilities. It is fully compatible with IEC 61131-3 STRATON PLC programming solution for process control and monitoring applications.
Below are 3 examples of such communication gateways:
1. SLG_003 : Physical RS-422/Current Loop Converter: SLG_003 converts an RS-422 communication port into a 20mA Current Loop interface without interfering with the format of transmitted data. It is particularly used to interface ATESS equipment or RIOM devices. For more information : here
2. BRIO ATB/DMI : EtherNet/IP - CIP SCANNER Gateway with Input/Output capabilities: In ETCS use cases with secure communication between ATB speed control system using I/Os and DMI (Driver Machine Interface) using EtherNet/IP – CIP communication protocol, the BRIO ATB/DMI facilitates the integration of push-buttons, contacts and various signals in cab cars. For more information. here
3. SLG_004: Serial Link / PROFIBUS Gateway: This product features a bidirectional RS-422/RS-485 to PROFIBUS communication gateway, used for EVC (European Vital Computer) and STM (Specific Transmission Module) protocols conversion. The SLG_004 is a key device in on-board ETCS architectures to facilitate the integration of heterogeneous systems. For more information: here
MIOS Elettronica’s Turn-Key Signaling Solutions
In addition to the products designed and marketed by LEROY Automation, our Italian sister company MIOS Elettronica (AGÔN Electronics group) specializes in turn-key signaling solutions too :
EVR-1000 and CPSM-1000: Event Recorder & Crash-Protected Memory Devices
The EVR-1000 & CPSM-1000 are modular platforms designed to easily support project-based customization requirements.
Those platforms are compliant with all the main international standards worldwide (CHMM7000 for US market) according to 49 CFR Part 229 rule – IEEE 1482.1 and IEC 62625-1.
They include a variety of hardware interfaces available as commercial-off-the-shelf (COTS) devices : Ethernet, CAN, MVB, GPS/GNSS receiver, digital and analogue I/Os, USB, RS-232/485/422… On those interfaces, the wide range of train communication protocols supported includes : MVB, CANOpen, IEC 61375-2-3 TRDP, IPTCom, EtherNet/IP – CIP, ModBus, and many more.
Those modular platforms are typically deployed to serve as:
1. Juridical Recording Unit (JRU) function to record data from ERTMS/ETCS fully compliant with to EU TSI. Such data and event recorders are vital to analyze the root causes of a train traffic accident ;
2. Network Attached Systems (NAS) and Data recording units of specific national data from on-board train control systems ;
3. Crash-Protected Memory Modules supporting Ethernet with PoE (Power-on-Ethernet) interfaces to store up to 32 GBytes of data directly from the on-board Ethernet networks.
