Rockwell-automation 2711 PANELBUILDER SOFTWARE USER MANUAL Manual de usuario descargar pdf (Pagina 297)

The Objects

Chapter 10

10-32

If you are displaying a number with a decimal point, the decimal point

occupies the space of one digit. For example, if you want to display a

fractional number and you specify eight digits, the Numeric Data Display

will show seven numeric digits, plus the decimal point.

Displays with Polarity

Enabling polarity extends the range of values that can be displayed. There

is only an implied relationship between the numeric value and the minus

sign. If the bit at the Polarity Address is 0, the minus sign is not displayed;

if the bit at the Polarity Address is 1, then the minus sign is displayed.

If the object is configured with just the polarity bit, 2 to 8 digits can be

configured (the default is 6), depending upon the field size. If both the

decimal point and polarity point are used, from 3 to 8 digits are allowed

(the default is 7).

If you are displaying negative numbers, the minus sign occupies the space

of one digit. For example, if you want to display a negative fractional

number and you specify eight digits, the Numeric Data Display will show

six numeric digits plus the minus sign and the decimal point.

There are two ways to display negative values—one uses “No Polarity”

and the “Signed Integer” data type. This automatically inserts the minus

sign when the signed integer bit value is negative. The other way is to

select “Polarity”.

Scaled Numeric Data Display

The Numeric Data Display object supports two types of numeric displays,

Standard and Scaled. Choose Scaled if you want to scale the PLC value

(for example, convert the raw PLC value into meaningful engineering units

such as gallons, inches, PSI, or inches per second).

Table 10.J

Scaled

Numeric Data Display Formatting and Addressing Options

Format Options Address

Options

Data Types Data Range

No. of Digits Displayed Value Binary 0 - 65,535

Fill Left With Zeroes or Spaces

Address BCD 0 - 99,999,999

Scaling Factor .0001 - 9999 Signed Integer -32,768 - +32,767

Offset Value -32,768 - +32767

Display Result

with

Decimal Point

or Roundoff

1 2 ... 292 293 294 295 296 297 298 299 300 301 302 ... 467 468

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