Panasonic FP Series

Arithmetic instructions
72
Part II IEC Instructions
COS
Cosine
To add an enable input and enable output to the instruction, select [With EN/ENO] from the
"Instructions" pane (LD, FBD or IL editor). To reuse an instruction select "Recently used" from the
context menu or press <Ctrl>+<Shift>+<v> in the programming window.
 The accuracy of the calculation decreases as the angle data specified
in the input variable increases. Therefore, we recommend to enter
angle data in radians  -2 and  2.
 The number of steps may vary depending on the PLC and parameters
used, see also Table of Code Intensive Instructions in the online help.
PLC types Availability of COS (see page 1318)
Data type I/O Function
REAL input input value, angle data in radians
REAL output as input cosine of input value
No. IEC address Set If
R9007 %MX0.900.7 permanently
R9008 %MX0.900.8 for an instant
 input variable does not have the data
type REAL or input variable  52707176
R900B %MX0.900.11 permanently  output variable is zero
R9009 %MX0.900.9 for an instant  processing result overflows the output
variable
This example uses variables. You can also use a constant for the input variable.
Description
COS calculates the cosine of the input variable and writes the result into the output variable. The
angle data has to be specified in radians (value < 52707176).
Data types
Error flags
Example
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.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
The cosine of input_value is calculated and written into output_value.
LD
ST
When programming with structured text, enter the following:
output_value:=COS(input_value);