Re: EMC compatable computers

[Jon Elson <elson-at-pico-systems.com>]

John Sheahan wrote:

>sorry for the abbreviation  GbE == Gigabit Ethernet
>often run on fibre - which may be appropriate for noise reasons here.
>
>I don't see the extra speed as a bonus for this app.
>
>  
>
Note that ALL ethernets, thick-wire, thin-wire and twisted-pair, are 
electrically isolated
by transformers.  If there was no other traffic on the ethernet segment, 
I think even
10 Megabit/sec ethernot would work for this application.  100 MB/S would 
definitely
be sufficient.  With proper attention to keeping the protocol simple, I 
would think a
message to each axis drive would only be a couple of bytes, so each 
message could
be just tens of microseconds long.

Jon