Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Uživatelský manuál stáhnout pdf (Strana 648)

100

101

Paramacros

Chapter 20

20-4

Table 20.B

Mathematical Functions

Function Meaning

SIN Sine(degrees)

COS Cosine (degrees)

TAN Tangent (degrees)

ATAN ArcTangent (degrees)

ASIN Arc Sine(degrees)

ACOS ArcCosine (degrees)

SQRT Square Root

ABS Absolute Value

BIN ConversionfromBCD to Decimal

BCD Conversion fromDecimal toBCD

ROUND RoundingOff (nearestwhole number)

FIX Truncation Down

FUP Truncation Up

LN Logarithms(base e)

EXP Exponent

When programming these functions, the value on which that function is to

be performed must be included in brackets. For example, SIN [10]. The

exception to t his is the arc tangent function. The format for ATAN requires

the division of two values. For example, ATAN [10]/[2] is used to

calculate the arc tangent of 5.

The functions in Table 20.B are executed from left to right in a program

block. These functions are executed before the control executes any

mathematical operators such as addition or subtraction. This order of

execution can be changed only by enclosing operations in brackets [].

Operations enclosed in brackets are executed first.

Example 20.3 illustrates the format for the mathematical functions found in

Table 20.B.

Example 20.3

Format for functions

SIN[2]

This evaluatesthesineof 2 degrees.

SQRT[14+2]

This evaluatesthesquareroot of16.

SIN[SQRT[14+2]]

This evaluatesthesineof thesquareroot of16.

LN[#2+4]

This evaluatesthelogarithmofthevalue ofparameter #2 plus 4.

Example 20.4 illustrates the results obtained when using the functions in

Table 20.B.

1 2 ... 643 644 645 646 647 648 649 650 651 652 653 ... 819 820

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