CAN Vehicle Bus Interface (CVB)

CAN Vehicle Bus Interface Module (CVB)

EKE Trainnet® CVB Front EKE Trainnet® CVB Side


EN 50155
EN 45545
IEC 61375-3-3

Dimensions (W x H x D):

4 TE x 3 U x 160 mm
165 g
Input Power:
5 V DC ± 5 % (500 mA nominal)
Temperature Range (operational):
-40 °C…+70 °C
MTBF (40 ºC ambient temperature):
600 000 h (CVB1521A CAN terminated)
600 000 h (CVB2456A CAN not terminated)
CAN Network Interface:
Two CAN interfaces
Data Rate:
Up to 1 Mbit/s
CAN 2.0 compatible
24 V compliant, optically isolated
9-pin sub-miniature D-type connector
AWG 20 STP cable recommended
Bus Termination:
On board 120 Ohm termination on request
VME Bus (IEC 821) Interface:
A24 Slave with D08(EO)/D16

module functions

The Trainnet® CAN Vehicle Bus Interface Module (CVB) is used to create up to two CAN Buses in the train. The 2 CAN ports can be independently configured as CAN 2.0 A/B or CANopen. The Trainnet® CVB module implements the CAN link layer functions. The routing between the CAN bus and other buses are implemented by the gateway CPU Module.

key features

The module has two CAN network connectors on the front-panel, one 9-pin sub-miniature D-type connector for each independent interface. Communication to the gateway is done through shared memory over the IEC 821 VME back plane bus. The CAN network access is implemented with two CAN controller chips, and the CAN link layer functions with the CAN module's local CPU. Multiple Trainnet® CVB modules can be controlled by a single Trainnet® CPU to implement physically separated CAN networks.

The Trainnet® CVB module has static shared RAM memory accessible from both the local CPU and the VME Bus interface.

The CVB module is realised through a highly efficient combination of local microprocessor, FPGA logic and two dedicated CAN controllers. The Trainnet® CAN Vehicle Bus Interface Module has the capability of carrying out some specific diagnostics functions. Interfaces are Dual CAN 2.0 B and ISO 11898 compatible with a CiA DS-102 standard pin assignment, implemented with SJA1000 standalone CAN controllers.


Bus interfaces: The Trainnet® CVB module is available as an option with integrated bus termination resistors.

Published on: 2017-03-02
EKE-Electronics Ltd
Piispanportti 7
02240 Espoo
Tel +358 9 6130 30