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From: rbowman <bowman@montana.com>
Newsgroups: comp.os.linux.misc
Subject: Re: LOTS of US Water Plants Hit by Hacks
Date: 5 Aug 2026 14:07:45 GMT
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On Wed, 5 Aug 2026 03:52:07 -0400, c186282 wrote:

>    Modern PLCs do not involve placing wires.
> 
>    HAVE done that, but the new paradigm is more 'software" or "software
>    defined"

That was my point.  PROGRAMMABLE logic controllers were PROGRAMMABLE and 
replaced solid state controllers that were a TTL version of relay logic. 

Of course, when you are interfacing with the real world some wiring is 
necessary unless you go full wireless but that's another story.