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  1. MikeKnight

    Melsec NPN I/O

    Hi, one of our japanese customers plans to replace our standard "Siemens" PLC control by his own PLC make "Melsec" (no idea what type). Now he requests to have 2-wire NPN type wiring (instead of our standard 3-wire PNP design). Is that normal (or possibly required) for this type of PLC? It...

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