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Recent content by CGehlhausen

  1. CGehlhausen

    SFC vs LL

    Ladder Logic will always be around. I'm in all sorts of factories, research facilities, pipelines, skids, cabinets, systems, cities - you name it, and LL is always there and usually predominant. Obviously the more complex, the more the other languages are used - rightly so. But you have to...
  2. CGehlhausen

    ASCII Checksum in a PLC

    Has anyone ever had to program a checksum subroutine in a PLC? I have to communicate with a proprietary Viscometer using RS-232 ASCII, basically like sending a CSV file with commas and alpha-numeric characters. I'm guessing that I'll need to program a lookup table to associate all of the ASCII...

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