Re: 'best' control network? Devicenet vs Lonworks vs CAN vs Fieldbus vs Ethernet ???

From: Jim Stewart (jstewart_at_jkmicro.com)
Date: 07/23/04 

Date: Thu, 22 Jul 2004 16:48:06 -0700

perfb wrote:
> no doubt this is a FAQ oft beat to death, but, assuming
> one wanted to control a network of about 10 i/o modules each
> with maybe 100 i/o digital/analog points, at maybe a 100Hz
> maximum rate (e.g. an automatic industrial processing machine of some kind)
> ...
>
> which control network would be, ahem, for lack of a better word, 'best'?
>
> (i.e. in terms of price/node, support, ease of development, availability
> of second-sources, availability of developers etc.?)
>
> Personally, being somewhat naive and ignorant of the field,
> I would go for ethernet, for sheer availability of tools and
> peripherals. But would I be making a gross faux-pas in doing so?
>
> is ethernet gaining ground as a general-purpose control network
> over e.g. CAN etc.?

Ethernet. Development costs might be a
little higher the first time through, but
the bandwidth per $ and the infrastructure
availability can't be beat.

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