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First a quick review: here is a PLC system on the left and a five/four system on the right. The programs are identical and switch is turned off – both lamps are off – no problems yet.

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2 Comments


  1. Muhammad
    Aug 29, 2013

    i am not able to see vedio lectures


    • Edvard
      Aug 29, 2013

      You don’t have flash installed in your browser. Get Google Chrome or Firefox and it will work like a charm ;)

      BR,
      Edvard

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