Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Uživatelský manuál stáhnout pdf (Strana 52)

Chapter 4

Defining Formulas

4–37

current value of formula 4, then formula 4 is set to the current value of

window 3. The result of this shifting of window 3 results is that the formula

1 result equals the window 3 result from four inspections ago.

The fault range limit for formula 1, in this example, is set to the appropriate

parameters for window 3. The output of formula 2 can be assigned to a

results output and used to trigger a signal the event window 3 failure.

This application example is particularly useful where indexing of parts

occurs, and where the action taken on a part failure occurs further down the

line (in this example “further down” means “four triggers down”).

Once you have defined a formula’s contents, you can name the formula using

the Set Name box on the Config. Results menu. Entering descriptive

names for formulas can be useful – during run mode, for example, formulas

can be displayed according to their pass/fail status. It may be easier, when a

formula is displayed, to identify a formula’s function if it has a name relating

to its content or functionality.

Default name: In case you do not name a formula, a default name is entered

automatically, when you define the formula. The default name for a formula

is F#, where # is the formula number.

Define formula first: The Set Name box for a selected formula is disabled

until the formula has been defined. Thus you cannot enter a formula name

until you enter a valid definition (see “Defining a Formula” in this chapter).

Figure 4.19 Using the keyboard to set the formula name

To enter a formula name:

• Pick Set Name on the Config. Results menu. The keyboard appears

(see Figure 4.19).

Naming a Formula

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Rockwell-automation 5370-CMPK Color CVIM Module MATH-PAK Uživatelský manuál Strana 52