25 Jul
2025
25 Jul
'25
11:05 a.m.
On 7/24/25 23:09, Devin via cctalk wrote:
Greetings,
Been a long while since i have posted in on here. I usually discuss my pdp 11 and vax
systems. I have decided to pivot my career to scada syatems. The company i am with has
some interesting stuff that goes pretty far back. Our custom in house tech is a plc pump
controller with a radio connection for data logging and control. Pretty cool, 8051 based,
with a version of basic in rom that has scada functions added. The backend servers are
just linux systems, although in a modular backplane for easy replacement.
I have not read much about this tech outside of what we have in house. Are there other
historic scada system computers or technologies that are similar, easily found on ebay for
example?
Ive seen some mention of old allen bradley stuff, but not much notes on how it would be
used remotely in the field, as a remote
terminal unit.
Allen-Bradley made a bunch of SCADA gear that was used in
power substations.
I think theirs MIGHT have been the one that was responsible
for the Y2K scare, but it might have been somebody else's unit.
Also, way back, there was a case where a SCADA manufacturer
thought some of their gear was being bought for the
trans-Siberia pipeline, and couldn't be sold for that under
trade restrictions. Somebody at that company got in touch
with a contact at the CIA, and asked if they wanted to
insert a "feature" into those units. They put in a time bomb
that was essentially the same as the Y2K shutdown, and blew
up the entire pipeline when all the valves slammed shut at
the same time. This info was reported by the famous Jack
Anderson in the Washington Post.
Jon