Panasonic FP Series Programming Manual page 439

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Table of Contents

Arithmetic instructions

In this example, the same POU header is used for all programming languages. For an example

using IL (instruction list), please refer to the online help.

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

In this example, the input variable input_value is declared. However, you can write a constant

directly at the input contact of the function instead.

The constants 3.0 and 10.0 are assigned to the inputs s1_Min (lower limit of the deadband) and

s2_Max (upper limit of the deadband). However, you can declare two variables in the POU header

and write them in the function in the body at the inputs. When the variable start is set to TRUE, the

function is carried out. Since the input_value = 12.0 is larger than the value of the upper limit of

the deadband at s2_Max, the output_value = 12.0 -10.0 = 2.0.

 the values at inputs s1_Min, s2_Max,

for an instant

 the result is 0.

for an instant

 the result causes an overflow.

and s3_In are not REAL numbers or the

value at s1_Min > s2_Max.