Panasonic FP Series Programming Manual page 616

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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 -10.0 and 10.0 are assigned to the inputs s2_Min (lower limit) and s3_Max (upper

limit). You may, however, declare two variables in the POU header instead. When the variable

start is set to TRUE, the function is carried out. The values of special internal relays R900A (>

flag), R900B (= flag) and R900C (< flag) are transferred to the variables larger_area, middle_area

and smaller_area. Since the input_value = 3.111 is within the range of the limits set (-10.0 to

10.0), the = relay and hence the variable middle_area are set to TRUE.

When programming with structured text, enter the following:

input_value:=3.111;

F346_FWIN( s1_In:=

END_IF;(* -10.0 =lower limit, 10.0 upper limit *)

larger_area:=TRUE;

middle_area:=TRUE;

smaller_area:=TRUE;

Comparison instructions