CAN@net II/Generic, Version 1.5
Functional Concept
7
2.2 Bridge Setup
The picture below shows the standard "Bridge" setup for the CAN@net
II/Generic.
The bridge setup allows you to connect two CAN systems over an
Ethernet/TCP/IP network, e.g. the local intranet or even the internet. For the
bridge setup one of the CAN@net II/Generic takes over the role of the client
which connects to a CAN@net II/Generic in the role of a server.
Intranet
Internet
Ethernet
Ethernet
CAN
CAN@net II/
Generic
(Client)
CAN
CAN@net II/
Generic
(Server)
Figure 2-2 Bridge configuration
2.3 CAN ID Filtering
The CAN@net II/Generic application firmware includes a filtering mechanism
based on CAN Identifiers. The basis for the filtering is a filter list, which contains
the CAN Identifiers of interest. A CAN message with an Identifier contained in
the filter list is forwarded; all other CAN messages are discarded.
Filtering only applies to the direction CAN system
TCP/IP network. In the
reverse direction, no filtering is available.
The CAN@net II/Generic provides functions to set or clear CAN Identifiers in
the filter list. It also allows you to write the filter list to the Flash memory so that
it can be loaded and used upon startup of the CAN@net II/Generic.
