>> What do you mean by time critical ? Is your network localized?
>> What I'm getting at is this -- depending on what your data rates
>> are and how your data communication is set up you may have no
>> problems using the non-realtime networking.
>>
>> My personal expericence is that We have 8 embedded CPUs with
>> 100BaseTX ethernet and 5 other computers needing data from the 8
>> embedded CPUs. And the 100BaseTX is fine, a human can't tell the
>> difference. For the small amount of really time critical data (6
>> bytes from each of the 8 embedded CPUs every 30 Hz), I'm setting
>> up an RS485 net and scheme.
Unless that Fast Ethernet is quite busy, I wonder what the benefit is
of stringing a separate net for that low rate time critical traffic.
What's the loading on the Ethernet? What's the acceptable delay bound
on the real time data?
If the peak load is under 50% or so, you should be able to get real
time data across the Ethernet in well under a millisecond.
paul
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