Panasonic FP Series Programming Manual page 696

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The function changes the sign of the floating point value at input s and returns the result at output

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 F335_FSIGN (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.

The value 333.4 is assigned to the variable input_value. When the variable start is set to TRUE,

the function is carried out. The output_value is then -333.4.

Floating point data sign changes (negative/positive conversion)

for an instant

 the value at input s is not a REAL

 the result causes an overflow.

Conversion instructions

dec. or hex.