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Tag: Ladder Logic Instruction

  • Ladder Logic Bit Instructions – Part 1

    Ladder Logic Bit Instructions – Part 1

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    Following table shows the PLC Programming Ladder Logic Instructions. 1. Contact (NO) Contact instruction maintains its state same as present state of the Tag which is linked with it. Refer below diagram which shows Contact instruction with Tagname, Point “A” & Point “B”. Point “A” is the input side of the instruction and Point “B”…