FLOOR

FLOOR 1:

The FLOOR function determines a integral value from a floating point number that is a fraction smaller than or equal that number. The resulting number is of type LREAL and is therefore not limited to the value range of integer variables.

Examples

FLOOR(2.8) = 2

FLOOR(-2.8) = -3

Similar functions: TRUNC, LTRUNC

Note: Unlike FLOOR, the LTRUNC function always determines the integral part of a number. For positive values, this number is smaller than or equal the input parameter, for negative values it is greater than or equal the input parameter.

FUNCTION FLOOR : LREAL

VAR_INPUT
    lr_in  : LREAL;
END_VAR

lr_in : Function parameters of type LREAL

Development environment	Target system type	PLC libraries to be linked
TwinCAT v2.9.0 build 1000 onwards	PC or CX (x86)	TcMath.Lib
TwinCAT v2.10.0 Build >= 1301	CX (ARM)	TcMath.Lib