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CTD

Home/ CTD

Count Down (CTD)

The CTD instruction counts downward each time the rung-condition-in transitions from false to true. Ladder DiagramOperand Data Type Format DescriptionCounter COUNTER tag Counter structurePreset DINT immediate Value of Counter.PRE.Accum DINT immediate Value of Counter.ACC.COUNTER ...

Timer and Counter Instructions

Timers and counters control operations based on time or the number of events.Bellow commands that can be used in ladder diagramTON TOF RTO CTU CTD RESBellow commands that can be used ...