In the rapidly evolving world of Industrial Automation (IA), new software versions are released almost monthly. However, the backbone of many global manufacturing floors—especially those established in the 1990s and early 2000s—still runs on legacy Programmable Logic Controllers (PLCs). For Mitsubishi Electric’s legacy PLC series (such as the MELSEC F, F1, F2, and K series), one name remains sacred among maintenance engineers: .
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