The use of bridges and gateways opens up a large number of configuration possibilities. For example, CAN systems can be implemented over a larger area, devices without CAN interfaces can be connected to CAN systems or CAN systems can be coupled using different technologies, such as Bluetooth, Ethernet or PROFINET.
- Cost savings due to simple wiring
- Larger system expansion and increased system reliability
- Filter and conversion functionality
- Bridging of large distances and easy system access using Bluetooth, Ethernet, PROFINET…
How it works
CAN bridges and CAN gateways are infrastructure components with which complex network structures can be implemented.
A CAN bridge can connect CAN networks of different bit rates or protocols with each other. It is based on the store-(modify)-forward principle where CAN messages are received by a sub-network and then transmitted to the other sub-network. Translation and filter rules can also be used, allowing a protocol adaptation to be carried out between the sub-networks. Unlike the CAN repeater, the CANbridge enables the enlargement of the maximum network size so that the sub-systems are fully self-sufficient with regard to bus arbitration. Independent of each other in terms of their real-time behavior, CAN sub-networks connected by bridges are to be regarded as independent networks.
The bridge function can also be executed with the aid of other transmission systems. For example, the CAN-Ethernet-CAN bridge is connected via two Ethernet-TCP/IP gateways which enable connection to remote CAN networks.
As an extension to the CAN bridges, CAN gateways allow for access to CAN networks via other communication systems. In each case, the protocols of the connected bus systems are mapped to the other communication model.
Using the CANbridge, CAN systems within a building can be separated for every floor, due to this the maximum system expansion can be easily extended.