Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 82)

Operating Functions

Chapter 5

5–45

We divide the unary operators into three groups; general purpose, log

functions and trig functions.

5.5.2.1

General Purpose Operators

Following are the general purpose operators.

5.5.2.1.1 ABS([expr])

Returns the absolute value of the expression.

Examples:

uPRINT ABS(5) uPRINT ABS(–5)

5.5.2.1.2 NOT([expr])

Returns a 16 bit one’s complement of the expression. The expression must

be a valid integer (i.e. between 0 and 65535 (0FFFFH) inclusive).

Non-integers are truncated, not rounded.

Examples:

uPRINT NOT(65000) uPRINT NOT(0)

535 65535

5.5.2.1.3 INT([expr])

Returns the integer portion of the expression.

Examples:

uPRINT INT(3.7) uPRINT INT(100.876)

3 100

5.5.2.1.4 SGN([expr])

Returns a value of +1 if the argument is greater than zero, zero if the

argument is equal to zero and –1 if the argument is less than zero.

Examples:

uPRINT SGN(52) uPRINT SGN(0) uPRINT SGN(–8)

10 –1

5.5.2.1.5 SQR([expr])

Returns the square root of the argument. The argument may not be less

than zero. The result returned is accurate to within +/–a value of 5 on the

least significant digit.

Examples:

uPRINT SQR(9) uPRINT SQR(45) uPRINT SQR(100)

3 6.7082035 10

5.5.2

Unary Operators

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 166 167

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 82