Rockwell Automation 5370-CMPK Color CVIM Module MATH-PAK - Manual (Page 27)

Chapter 4
Defining Formulas
4–12
Operands
With respect to MATH-PAK formulas, an operand is a symbol (such as
GAGE 1 or WINDOW 3.2 or 32.45 ) that represents a mathematical or
logical value. Operands represent such values as tool results, statistics,
constants, or formula results (see Table 4.C, starting on page 4–14, for
operand listings and descriptions).
Figure 4.6 Operand keys
Initial
key set
Operand keys
To enter a particular operand in a formula:
•
Pick the appropriate operand key on the formula entry keyboard – the
corresponding operand symbol appears in the display area of the
keyboard (see Figure 4.6).
•
Typically you must then pick additional keys (decimal point and/or
numeric keys) to complete the operand entry.
For example, to enter the operand for gage 5 numerical results (number of
pixels, number of edges, and so on), enter the operand
GAGE5 , as follows:
•
Pick G on the formula entry keyboard – this will initially display the
operand GAGE0 in the formula display area:
= ? GAGE0
Formula:
•
Pick 5 – this will change the operand to GAGE5 .
= GAGE5
Formula: