Suddenly, the multi-million dollar assembly line was a collection of expensive paperweights. The PLC now sat with a frantically blinking red STOP LED, unable to read the card he’d just "cleaned."
Ten minutes later, the card was back in the CPU. The STOP LED went solid, then transitioned to a steady, rhythmic green. The "ghost" was back in the machine, and the assembly line roared back to life.
: Always ensure you have the legal right to access the software on an MMC. Unlocking "Know-how Protection" without permission may violate intellectual property agreements.