Re: [Xenomai-help] CAN driver

[Roland Tollenaar <rwatollenaar@domain.hid>]

> Ethernet must surely be here for the long term - Many people have predicted 
> USB usurping ethernet, but it lacks the abilty to drive long cables.. For 
> industrial environments, one crucial part missing from most (all ?) USB - 
> That of electrical isolation. One accident with a floating earth, or one 
> device that is "hot", and the whole system ends up being toasted.

I do believe that PEAK USB CAN adapters come optically isolated for just
this reason. I know because its and option and more expensive than the
ones we purchased. At that stage we were only using them for testing bus's.



>> AFAIK there is no obvious successor for USB? Firewire made some noise
>> for a while but the way I understand it, not really that beneficial?
> 
> It really depends on what you need to interface, and also how deterministic 
> the communications needs to be - For most users, the USB "sometime today" 
> model is sufficient, for others who need a "now DAMIT" time frame, there are 
> alternatives.
Besides firewire (1394 was it not?) what else are the options? Become
vendor driven things, ProfiBus, Devicenet (variant of CAN), anything else?

By the way, what is CANOpen going to do long term. Stick around or is it
already being driven out by other protocols?

Regards,

Roland.




> 
> 
> Regards, Paul.
>