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Groups > comp.os.linux.misc > #89576
| From | rbowman <bowman@montana.com> |
|---|---|
| Newsgroups | comp.os.linux.misc |
| Subject | Re: LOTS of US Water Plants Hit by Hacks |
| Date | 2026-08-05 06:14 +0000 |
| Message-ID | <ndg2mjF4198U41@mid.individual.net> (permalink) |
| References | <AeOcndDc0Jq_quz3nZ2dnZfqn_GdnZ2d@giganews.com> <nddhj3F4198U31@mid.individual.net> <S3Kdnbzan-dFX-_3nZ2dnZfqn_GdnZ2d@giganews.com> |
On Wed, 5 Aug 2026 00:58:46 -0400, c186282 wrote: > On 8/4/26 03:10, rbowman wrote: >> On Mon, 3 Aug 2026 20:50:24 -0400, c186282 wrote: >> >>> Anyway, hardware PLCs are pretty stupid - you don't actually hack >>> them directly. They're basically a replacement for a box of relays >>> or equivs. Software PLCs - a uC or even better - are more >>> "computers", >>> oft net-connected these days. An Ard Uno would make a fair >>> software PLC. A low-end PI even better. >> >> https://www.realpars.com/blog/plc-hardware >> >> What's a hardware PLC? > > There ARE 'chips' ... or, cruder, boards with a lot of transistors. Semantics. A transition device was Square D's NorPak system. There were a number of different cards that that mounted in a frame similar to a backplane. NOR gates are the simplest so those were the basic building blocks. Working with NOR, NAND, and NOT gates leads to brain bleed. https://www.ebay.com/itm/Norpak-Square-D-8852-L-19-Counter-4-Input-NOR-20- Pack-Series-A-FREE-SHIPPING-/282588704448 'Programming' was done by stripping wire, crimping on a tapered pin, and seating it with a too like an automatic center punch. Solid state relay logic...
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LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-03 20:50 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 07:10 +0000
Re: LOTS of US Water Plants Hit by Hacks "Carlos E. R." <robin_listas@es.invalid> - 2026-08-04 10:44 +0200
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 17:53 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 02:47 -0400
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-04 11:14 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-04 18:07 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 02:55 -0400
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:42 +0100
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 14:09 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:40 +0100
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 00:58 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 06:14 +0000
Re: LOTS of US Water Plants Hit by Hacks c186282 <c186282@nnada.net> - 2026-08-05 03:52 -0400
Re: LOTS of US Water Plants Hit by Hacks rbowman <bowman@montana.com> - 2026-08-05 14:07 +0000
Re: LOTS of US Water Plants Hit by Hacks The Natural Philosopher <tnp@invalid.invalid> - 2026-08-05 11:46 +0100
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