Trigonometric Instructions

The trigonometric instructions evaluate arithmetic operations using trigonometric operations.
Available Instructions
Ladder Diagram
If you want to:
Use this instruction:
Take the sine of a value.
Take the cosine of a value.
Take the tangent of a value.
Take the arc sine of a value.
Take the arc cosine of a value.
Take the arc tangent of a value.
Compute the arc tangent of the Source and return the FLOAT result.
You can mix data types, but loss of accuracy and rounding error might occur and the instruction takes more time to execute. Check the S:V bit to see whether the result was truncated.
The
bold
 data types indicate optimal data types. An instruction executes faster and requires less memory if all the operands of the instruction use the same optimal data type, typically DINT or REAL.
A trigonometric instruction executes once each time the instruction is scanned as long as the rung-condition-in is true. If you want the instruction evaluated only once, use an ONS instruction to trigger the trigonometric instruction.
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