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For starters:
CAN
- max speed 1Mbit/sec
- All messages get broadcasted and there can be many recipients
- Max length at full speed 30-40 Meters
- non-destructive arbitration, even at high load, the highest priority still gets transmitted.
Ethernet
- max speed 10/100/1000 Mbit/sec
- source and destination for a message, not broadcast
- Ethernet can go very long distance
- arbitration is destructive, if network has a high load, it is possible to stall the whole thing.
If you need to decide which one to use, tell us about your application and you can get more help.
Hi Bob
as i am new to CAN protocol, i would like to know about CAN over Ethernet. i have not yet selected any application. collecting details about CAN only. thank u
As you probably know, CAN was primarily deigned for short distances in electrically noisy and general hostile automotive applications. It runs at relatively slow speeds, but with high reliability, often using unbalanced power plus data wiring. No sure about over ethernet, unless of course you just mean the cable. Interesting idea though. You could possibly convert to balanced for longer runs, but there are better methods if you want higher speeds or longer distances.
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