So that's why a 2 systems were getting crappy speeds. Yes, 2. It had been used only to split a single drop from another switch between two systems.
New drop, happy clients.
Some stuff here is museum material.
this post was submitted on 20 Jun 2025
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At least the lathe isn't running punch tape.
Don't upgrade or mess with the control. Disconnect from the network if it's on it. It should have RS-232. Throw a Pi or other SBC that does serial and a 12V level shifter; use that to feed it programs.
Also, make an image of the hard drive if it has one and start looking for a spare drive on ebay.
I've got it covered :) - whole duplicate set of hardware & drive image. Recapped the board last year & replaced PSU too.
I won't touch the DOS software it uses to actually run the plant, the lads can have at that.