Interesting, I'd never heard of token-bus networks, or IEEE 802.4, which was indeed a token-bus standard.
CAN isn't a polled bus, doesn't have a master, and doesn't impose a performance hit. However, on a bus network, every device on the bus is a single point of failure: if it starts jabbering, the network stops working.
CAN isn't a polled bus, doesn't have a master, and doesn't impose a performance hit. However, on a bus network, every device on the bus is a single point of failure: if it starts jabbering, the network stops working.