Equipments (Devices) > CVW500G2 > Ladder > Math > Math Trigonometry

Block that calculates the cosine of Angle, storing the result in Result.

Ladder Representation

Block Structure

Variable Type	Name	Data Type	Description
VAR_INPUT	EN	BOOL	Block enabling
VAR_INPUT	Angle	REAL	Angle (in radians)
VAR_OUTPUT	Done	BOOL	End of operation
VAR_OUTPUT	Result	REAL	Variable that stores the result of the operation

Operation

When this block has a TRUE value in EN, it sends to the Result output the cosine of Angle. If no errors, the Done variable is set. If there is any error in the operation, Done is not set, staying in FALSE status, while Result remains with its value unchanged.

When EN has FALSE value, Result remains unchanged and Done remains in FALSE.

Block Flowchart

COS_flowchart

Example in Ladder

COS_example01

The above example calculates the cosine of the ANGLE variable, interpreted in radians, storing the final result in RESULT. The block ends with success and Done output is activated.

COS_example02

The above example calculates the cosine of the ANGLE variable, interpreted in radians, storing the final result in RESULT. The block ends with success and Done output is activated. Notice that the block accepts negative input values and greater than one turn.

Example in ST

The example below displays the instructions for applying the example above in the ST language.

VAR

ANGLE : REAL := -21.99115;

RESULT : REAL;

END_VAR

RESULT := FB_COS(EN:=DI1, Angle:=ANGLE, Done=>DO1);