The WiCAN bridge connects the physical CAN-bus via a 802.11b/g/n Wi-Fi radio network. Such a network runs at layer-2 level consist of multiple bridges in order to join two or more CAN-bus segments to each other. Additionally these devices can operate in TCP/IP mode. This allows for bridging of two devices over existing network infrastructure using an encrypted TCP tunnel.
- Wireless bridge for CAN-bus data
- Operates as CANopen® device with device monitoring & configuration and SYNC regeneration
- Transparent for J1939 or other 29-bit CAN applications
- Transparent for CAN-FD
- Supports up to 8 clients in the wireless domain in Layer-2 mode
- Supports encrypted point-to-point link in TCP/IP mode
- Configuration via CANopen, embedded webserver or using PC application via (internal) micro-USB port
- Internal button activates radio association; if no ‘coordinator’ is found, then it becomes the coordinator. Otherwise it pairs when the found coordinator.
Wireless performance & limitations
Connecting CANopen devices over a wireless link strips some of the reliability and ruggedness features of the CAN bus protocol. Additionally, there are bandwidth limitations that are less easily defined than with a wire-line approach. Use of more than 2 bridge devices in a network results in multicast transmissions, which decreases effective bandwidth proportionally to the number of bridges. When the wire-line feed bit-rate and message rate exceed the available RF bandwidth, increased message latency may occur and ultimately message loss.