The control algorithms are based on scan values where the time interval between two consecutive scans should be taken into account. The function blocks calculate the value of this interval automatically, which means they can be placed anywhere in the section without having to take the time management into consideration.
Set time intervals provide the following advantages:
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Run time optimization of the PLC program by dividing the control operations into several cycles,
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improved control quality, where scanning the servo-loop too frequently is prevented
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Minimizing the demands on the actuators
For example, the SAMPLETM function block can be used, which should be attached to the input of the function block to be scanned.