Panasonic FP Series Programming Manual page 346

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In this example the function has been programmed in ladder diagram (LD) and structured text

(ST).The same POU header is used for all programming languages.

All input and output variables used for programming this function have been declared in the POU

When the variable start is set to TRUE, the function is carried out.

F21_DADD(value, output_value);

for an instant

 the calculated result is 0.

 the result exceeds the range of 32-bit

data (overflow or underflow).

Arithmetic instructions

dec. or hex.