PID_Compact will scale the value of the analog input to the physical quantity if you use the analog input value directly.
You will need to write a program for processing if you wish first to process the analog input value. The process value is, for example, not directly proportional to the value at the analog input. The processed process value must be in floating point format.
Procedure
Proceed as follows to use the analog input value without processing:
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Select the entry "Input_PER" in the drop-down list "Input".
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Select "Instruction" as source.
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Enter the address of the analog input.
Proceed as follows to use the processed process value in floating point format:
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Select the entry "Input" in the drop-down list "Input".
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Select "Instruction" as source.
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Enter the name of the variable in which the processed process value is saved.