On 4 Feb 2008 at 20:44, Jeff Latta wrote:
> It's a long shot but ........
> 
> Has anyone seen interface cards/circuits for sale to provide this 
> protection to a microcontroller?
> I'm thinking of a small multi-port add-in board that would provide a 
> level of protection similar to what a typical PLC has.

Opto 2 is a company that does modules like that I think. Pretty sure you can build a 
system using their I/O blocks with your own processor (or theirs).

http://www.opto22.com/

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