Square Root (SQR/SQRT)

The SQR instruction computes the square root of the Source and places the result in the Destination.

Available Languages
-    Ladder Diagram

-    Function Block

-    Structured Text
Use SQRT as a function.

Operands
-    Ladder Diagram

Operand	Type	Format	Description
Source	SINT INT DINT REAL	Immediate tag	find the square root of this value
Destination	SINT INT DINT REAL	tag	tag to store the result

-    Function Block

Operand	Type	Format	Description
SQR tag	FBD_MATH_ADVANCED	structure	SQR structure

-    Structured Text
Use SQRT as a function. This expression computes the square root of source and stores the result in dest.

dest := SQRT(source);

FBD_MATH_ADVANCED Structure

Input Parameter	Data Type	Description
EnableIn	BOOL	Enable input. If cleared, the instruction does not execute and outputs are not updated. Default is set.
Source	REAL	Find the square root of this value. Valid = any float

Output Parameter	Data Type	Description
EnableOut	BOOL	Enable output.
Dest	REAL	Result of the math instruction. Arithmetic status flags are set for this output.

Example
Calculate the square root of value_1 and place the result in sqr_result.

-    Ladder Diagram

-    Function Block

-    Structured Text
sqr_result := SQRT(value_1);

File name: PLC-22_IS_CMI-SQR-SQRT.pdf
File size: 408.99 KB