Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual de usuario descargar pdf (Pagina 85)

Chapter 8

Defining Strings for Serial Ports and Viewports

8–9

Serial Ports: You can use the formula indicator with the character code

indicator (see “/ Character Code Indicator”).

Example – Use formulas and formula indicators to transmit a window result

in 16–bit binary code.

Definition of formula 1: WIN1 / 256 (Window 1 results  256)

Definition of formula 1: WIN1 % 256 (Window 1 modulo 256)

For a window 1 result of 780:

Formula 1 = 3 (decimal portion disregarded)

Formula 2 = 12

This code

transmits these two bytes (shown in binary below):

/%1 /%2 0 0 0 0 0 0 1 1 0 0 0 0 1 1 0 0

Viewports: You can use the %fn code in your string text coding in a variety

of ways – as the numeric part of the character code (see “/ Character Code

Indicator”), as a parameter in drawing a line or placing text (see “Draw Line

Codes” and/or “Plot Line Codes”), or as a parameter for color coding (see

“Change Color Codes”). Refer also to “Text and Tool Viewport Examples”

for an example of using the formula indicator.

You can add the “–” (minus) sign as a prefix (as in –%5) to the formula

indicator, in order to use the negative of the specified formula result value

(this can be practical, for instance, if you are using a formula result as a

parameter in drawing or plotting a line).

# (Index) Character

The # (index) character is intended to be used along with the Repeat String

feature (see also Repeat String later in this chapter). When the # is placed

in the string text, the CVIM module replaces the # in the output with the

current index value.

You can use the # (index) character in two ways:

• Place the # in the string to take the place of the tool number designation in

a data code – for example, G#, or W#.

• Place the # by itself in the string to transmit or display the current index

number.

You can, at your option, specify the format of the index “field” in the output.

You specify the index field format by including an optional formatting code

in parentheses immediately following the index character in the text string

you are defining (see “Field Format Codes”).

Using an Offset with the # (Index) Character – You can include an

“offset” with the index character, by placing either the “+” or “–” sign after

the “#,” followed by the offset value.

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Rockwell-automation 5370-UPK CVIM USER-PAK Option Manual de usuario Pagina 85