Rockwell-automation 8520-GUM 9/Series CNC Grinder Operation and Progra Uživatelský manuál stáhnout pdf (Strana 71)

100

101

Chapter 2

Operating the Control

2-51

The control executes functions in Table 2.F 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 2.2

Format for [CALC] Functions

This expression: Evaluates the:

SIN[2] sineof2 degrees

SQRT[14+2] square rootof 16

SIN[SQRT[14+2]] sine ofthesquare rootof 16

Example 2.3

Mathematical Function Examples

Expression Entered Result Expression Entered Result

SIN[90] 1.0 F IX[12.7] 12.0

SQRT[16] 4.0 FUP[12.2] 13.0

ABS[-4] 4.0 FUP[12.0] 12.0

BIN[855] 357.0 LN[9] 2.197225

BCD[357] 855.0 EXP[ 2] 7.389056

ROUND[12.5] 13.0 ATAN[2]/[5] 21.801413

ROUND[12.49] 12.0

Important: Take precautions when performing calculations within the

brackets [ ] following a mathematical function. The control performs

operations within the bracket first, and then the mathematical function is

performed on this resultant.

For example:

Ifyo ur mathematicalfunction is: Thenthe resultis:

ROUND[2.8+2.6] 5.0

The values in the brackets are added together first and then rounded, not

rounded and then added together.

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