**When rung conditions are true, this output instruction calculates the square root of the absolute value of the source and places the rounded result in the destination.**

**This instruction calculates the square root of a negative number without overflow or faults.**

#### Example

Equation: F8:90 = SQR(-25)

#### Ladder Logic Solution

Computing the square root of (-25)

#### Example

Equation: F8:90 = SQR(-25)

#### Ladder Logic Solution

Computing the square root of (-25)

#### Note

- SQR instruction calculates the square root of a negative number without causing any overflow or fault.