Multifunction Vehicle Bus Interface Module
EKE-Trainnet® Multifunction Vehicle Bus (MVB) modules are used to create vehicle buses or more comprehensive train communication networks.
EKE-Trainnet® MVB implements the MVB link layer functions of the IEC 61375-3-1 Train Communications Network (TCN) standard. The TCN’s real-time protocols and the routing between the MVB and other buses are implemented by the gateway Central Processing Unit (CPU) module.
Key Features
The EKE-Trainnet® MVB module supports physical cable redundancy and full bus master functionality as specified in the IEC 61375-3-1 standard. Bus administrator redundancy is supported on the software level.
The EKE-Trainnet® MVB module has static shared RAM memory accessible from both the local CPU and the VME Bus interface. A separate memory area is reserved for message data and maintenance messages, as well as for Remote Procedure Call type access to the Link Layer primitives.
TCN standard’s D-9 type connectors are located on the front panel of the module. Communication to the gateway is conducted through shared memory over the IEC 821 VME back plane bus. The MVB link layer functions are implemented by the MVB module’s local processor. Multiple EKE-Trainnet® MVB modules can be controlled by a single EKE-Trainnet® CPU to implement physically separated MVB networks.
The EKE-Trainnet® MVB module is realised through a highly efficient combination of local microprocessor and FPGA logic. In addition to strict compliance with the IEC 61375-3-1 standard, the EKE-Trainnet® MVB module has the capability of carrying out some diagnostic functions.
Options
The EKE-Trainnet® MVB module offers the following physical interfaces:
- Electrical Short Distance with isolation (ESD+) and
- Electrical Medium Distance (EMD).
Both are equipped with two sub D-9 connectors.
