Math Conversion Instructions

The math conversion instructions convert values.

Available Instructions

Ladder Diagram and Function Bock

Conversion

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 math conversion 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 conversion instruction.