Reply to post: Ancient PLCs

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Will Godfrey Silver badge

Ancient PLCs

These chug along for far more than 20 years! I know of several that are still running 24/7 and are getting on for 30, and last year I repaired an ancient TTL forerunner that's something like 40 - the I/O modules are 2x10x8... inches!

Fortunately none of these have any network access (that I know of)

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