Rockwell-automation 5370-CVIM2 Module User Manual download pdf (Page 430)

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101

Chapter 7

Inspection Tools

7–192

The Gage Threshold panel contains a separate adjustment for the “rising”

and “falling” edges of an object in the image field. The rising edge is a

transition from a dark to a light area; the falling edge is a transition from a

light to a dark area.

The threshold settings are both 32 by default. This means that an edge will be

detected wherever the gray scale value changes by at least 32 (within the

number of pixels specified by the Kernel setting). For a rising edge, the gray

scale value must increase by 32 or more; for a falling edge the value must

decrease by that amount.

A threshold value can be adjusted by sliding the appropriate cursor up or

down, or by clicking the “box” containing the threshold value. In that case,

the calculator pad will appear, and a value between 0 and 127 can be entered.

For more detailed information about thresholds, refer to the Threshold and

Kernel Settings section on page 8–6.

When you pick the Gage Label field in the multiple gages tool edit panel,

the keyboard panel appears, as shown in Figure 7.154.

Figure 7.154 Gage Label Keyboard Panel

You can use the keyboard to enter an appropriate name or “label” for the

selected sub–gage. The label can contain up to eight characters. When you

click the Enter key to enter the label, the label will appear in the

Sub–Gages result list box and adjacent to the sub–gage. Whenever you

move (“pick and place”) the sub–gage, the label will move with it.

Gage Label Function

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Rockwell-automation 5370-CVIM2 Module User Manual Page 430

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