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Even more common in the world of industrial automation. Lots of old early-gen PLCs from the 70s/80s still ticking, with no documentation and the techs/engineer
by TrackerFF 3y ago
Even more common in the world of industrial automation.
Lots of old early-gen PLCs from the 70s/80s still ticking, with no documentation and the techs/engineers/companies long gone.
We worked on one such PLC, around 3 decades old at the point, and it came down to probing I/O, reverse engineering the functionality.
But at some point, if there hasn't been enough legacy support, there comes a time where people just have to bite the bullet and re-build a system from the ground up - and integrate it in parallel with the old system running, until it can be removed completely.
Too bad many of the old and forgotten systems are still running and integral, so they get put inside a glass cage with "DON'T TOUCH!" warning sticker.