What is the difference between the PID forward and backward operations when the PID FB package is used?

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  • GLOBAL > PLC > SPH > Function > What is the difference between the PID forward and backward operations when the PID FB package is used?
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  • Displayed Date : 2023/04/25 19:00
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What is the difference between the PID forward and backward operations when the PID FB package is used?

What is the difference between the PID forward and backward operations when the PID FB package is used?
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Answer

In the MV selection part in the PID FB, (1) the backward operation uses the internally calculated MV value (%) without processing it (as-is)_ and (2) the forward operation calculates '100 (%) - (Internally calculated MV value (%)).'

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