Panasonic FP Series Programming Manual page 694

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The function rounds off the decimal part of the real number data and returns it at output d.

If the first post-decimal digit is between 0..4, the pre-decimal value is rounded down. If the first

post-decimal digit is between 5..9, the pre-decimal value is rounded up.

This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which

is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the

"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears

under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming

area to open the list of recently used elements.

Availability of F334_FRINT (see page 1324)

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.

When the variable start is set to TRUE, the function is carried out. It rounds off the input_value =

1234.567 after the decimal point and returns the result (here: 1235.000) at the variable

output_value.

Rounding the first decimal point off

for an instant

for an instant

 the value at input s is not a REAL

 the result is 0.

 the result causes an overflow.

Conversion instructions

dec. or hex.