Rockwell Automation 5370-CUPK Color CVIM USER-PAK Option - Manual (Page 99)

Chapter 8
Defining Strings for Serial Ports and Viewports
8 – 10
% Formula Indicator
You can use the result from a formula for a character code, color code, or line
drawing parameter instead of entering a fixed numeric value. To do this,
enter the formula indicator in the place of the numeric value within the
respective code. The formula indicator takes this form:
% fn
where fn is a number from 1-56 which specifies the respective formula
result (you must have installed the MATH-PAK option, Cat. No.
5370–CMPK).
Note: The fractional portion of the formula result, if any, is ignored within
the context of this feature.
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 Color CVIM module replaces the # in the output with
the current index value.