duagon D517 and D532 gateways

While gateways are generally used to interconnect different communication technologies such as networks or protocols, in railway environments they can enable a multiservice communication platform. The duagon gateways D517 and D532 are designed for the harsh rolling stock environment; they are EN 50155 certified to meet corresponding vibration and emission requirements and offer an extended operating temperature range.

The D517 acts as a secure Ethernet-to-Ethernet firewall between vital and non-vital networks. It consists of two M12 Ethernet interfaces, a serial interface and a JTAG interface for software update and debugging purposes. The integrated firewall implements a configurable packet filter, together with IP mapping. Most settings can be managed by a configuration file, which is stored in the internal flash memory. The packet filter configuration may be frozen for series production.

When integrated in onboard services, the gateway should reduce the risk of attacks via non-vital networks such as PIS/CCTV on the train communication network. It is integrated in a stainless steel housing and can be mounted on a DIN rail.

The D532 is a compact multipurpose communication module, designed for the harsh traction environment. It supports a set of communication interfaces, including MVB, RS485, RS422, CAN and current loop. A powerful 32-bit CPU enables customer-specific communication protocols and applications. The combination of fieldbus interfaces can be configured according to the application-specific requirements. A wide range of applications can thus be flexibly covered with one module, such as the connection of several subsystems to an MVB network or the integration of CAN/RS485-based sensors.

The module supports line redundant EMD and ESD+ physical layer. The MVB interface complies to the TCN standard IEC 61375 and supports devices up to class 4, including process and message data, and can act as bus administrator.