Product code: TKE SCS-10
CAN Switch / Bridge
The CAN Switch divides a single logical network into several physical networks. With the CAN Switch mixed topology (eg. Star or Tree) can be used at all baudrates.
The switch has total of five CAN-ports, where one is used for configuration. The switch can be configured with CANopen SDO:s and error handling is done in accordance to CANopen EMCY.
The CAN Switch can be equipped with different types of connectors, such as M12 or D-SUB9. The CAN switch is also equipped with filters which can be set up individually for each bus. The SCS-10 is a robust unit with acid proof IP-67 rated housing designed for the toughest environments on the planet.
How the TKE CAN Switch Works
A CAN switch, or CAN bridge is an intelligent repeater that allows connecting several CAN buses, even with different bitrates. The buses are not electrically connected but messages are read from one CAN bus, optionally filtered, and then retransmitted on one or several of the other CAN buses.
Benefits of the TKE CAN Switch
The benefits of a switch/bridge are many. When the bus segments are electrically separated, short circuits and other electrical disturbances are isolated to the segment where they occur, letting the other branches of the network continue operation normally. Bus load can be reduced if not all messages are retransmitted to all of the branches. One branch can use a lower bitrate to allow increasing the bus length to a few remote nodes.
The TKE CAN switch/bridge has four switched CAN ports and an additional CAN port for configuration.
Configuration over CAN
The TKE CAN switch/bridge can be configured and actively monitored using CANopen on the additonal fifth CAN port. This allows connecting the CAN switch to a separate CAN bus for network monitoring, if available. The configuration port can also be connected to the switched network, allowing configuration and monitoring from the CAN connected HMI or bus master node. The separate CAN port for configuration also allows locating the configuration port far away from the actual switch, which might be appreciated in case the CAN switch is located in a difficult or dangerous environment.
The TKE CAN switch does not contain any DIP switches, as these often malfunction after a few years in industrial environments. CAN bitrates and other settings are configured through the configuration CAN bus using the included software, or any standard CANopen configuration tool.