EKE-Electronics EKE-Trainnet MVB - Functionality Diagram; MVB Features; Duplicated Line

Overview of the MVB module
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The board test label indicates that the board has gone through the required testing
cycle.
The serial number identifies the module. It is found on the back side of the front panel.
This is the serial number of the entire module, and the board has its own serial number.
The Module ID, located on the front panel handle, indicates an ID for this module. Again
note that the board has its own Board ID.
2.3 Functionality diagram
The following figure presents a general diagram of the MVB module functionality. For
a more detailed block diagram, see Appendix B.
Figure 2.1: General functionality diagram
2.4 MVB features
The MVB module is designed to ensure reliable data transmission on board a train. The
following sections present some MVB features intended for this purpose.
2.4.1 Duplicated line
To ensure uninterrupted functionality of the Multifunction Vehicle Bus, the bus is
duplicated: there are two lines (A and B) through which devices transmit data. In case
one of the lines is temporarily out of order, the other line can take over, and full
redundancy is ensured. This way, the flow of important data can continue without
interruption even in case of potential problems.
MVB MAU
VME bus
MVB
Configuration
MVB
Manager
(Z180)
PST Interface
Trainnet® Download
VME bus
Slave Logic
MVB line A
MVB line B
MVB MODULE