Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Manual de usuario descargar pdf (Pagina 19)

Chapter 4

Defining Formulas

4–4

To use the Jump box to select the formula number:

• Pick Misc → Config. Results to access the Config. Results menu.

• Pick the Jump box on the Config. Results menu. The calculator pad

appears (see Figure 4.2).

• Pick the appropriate numeric key boxes on the calculator pad to select the

desired formula number.

• When the desired formula number appears in the calculator pad display,

pick Enter on the calculator pad. This changes the selected formula to

the number on the calculator pad display.

Figure 4.2 Using the Jump box and calculator pad

Jump box

Calculator pad

Formulas can be defined in a variety of ways to perform a variety of

calculations.

Multiple operators, of different types, can be combined in different ways

within a formula. “Nesting” of operations within a formula can be employed

through the use of the parentheses. Or, a formula can consist of a single

operand, with no operators.

A first step in formula definition is to review the available operators and

operands – this information is listed in the sections “Entering Operands” and

“Entering Operators” in this chapter.

The next step in formula definition is to decide on the formula content, and

results desired from the formula – that is, determine what you want the

formula to do, based on your application requirements.

Once you have decided on the formula requirements, to define a formula, use

the formula entry keyboard, which is described in the following two sections.

Defining a Formula

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Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Manual de usuario Pagina 19