Panasonic FP Series Programming Manual page 422

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The function calculates the tangent of BCD code angular data (input s) and stores the result

(output d) as a BCD value in an array with three elements.

BCD values for input s lie in the area from 0° to 360° (16#0 to 16#360) in 1° steps. With this output

d yields a result in the range of -57.2900 to 57.2900. The result is returned as follows:

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 F302_BTAN (see page 1324)

ARRAY [0..2] of

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.

BCD type Tangent operation

preceding sign (0 when input is +, 1 when input is -)

whole number before the decimal point as BCD value (16#0 to

numbers after the decimal point with 4 significant figures as BCD

value (16#0000 to 16#9999)

area where angle data is stored

result stored in 3 words

for an instant

for an instant

 the input value for s is not a BCD value

 s = 90° (16#90) or 270° (16#270)

 the result is 0.

 the result causes an overflow.

Arithmetic instructions

dec. or hex.