Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Uživatelský manuál stáhnout pdf (Strana 39)

Chapter 4

Defining Formulas

4–24

Absolute value operator: ABS

Format/Usage: The absolute value operator (ABS) provides the absolute

value of the operand or expression enclosed in the following parentheses. To

use the absolute value operator, enter the ABS operator – which includes the

open parenthesis “(” – then enter the operand or expression, and then enter

the close parenthesis “).”

The absolute value operator can be used with 1) single operands, 2) operator/

operand expressions, such as arithmetic expressions, 3) operator/operand

portions of the formula – that is, operators of the type that are followed by a

parenthetical listing of operands.

Example usage: Use the absolute value operator with a parenthetical

subtraction operation, to ensure a positive result value:

ABS (GAGE2

–

GAGE1)

Square operator: SQ

Format/Usage: The square operator (SQR) computes the square (an

operand multiplied by its own value) of an operand or expression enclosed in

the following parentheses. To use the square operator, enter the SQ operator

– which includes the open parenthesis “(” – then enter the operand or

expression, and then enter the close parenthesis “).”

The square operator can be used with 1) single operands, 2) operator/

operand expressions, such as arithmetic expressions, 3) parenthetical

operator/operand expressions, and 4) operator/operand portions of the

formula – that is, operators of the type that are followed by a parenthetical

listing of operands.

Example usage: Use the square operator with a linear gaging measurement to

calculate the area of a square object.

SQ (GAGE2) – WINDOW1.11

Square root operator: SQR

Format/Usage: The square root operator (SQR) computes the square root of

the operand or expression enclosed in the following parentheses. To use,

enter the SQR operator – which includes the open parenthesis “(” – then

enter the operand or expression, and then enter the close parenthesis “).”

Negative operand value: If the operand used returns a negative value, the

square root operator result is zero (0).

The square root operator can be used with 1) single operands, 2) operator/

operand expressions, such as arithmetic expressions, 3) parenthetical

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Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Uživatelský manuál Strana 39