5. Set the test parameters to set the pass/fail criteria.a) On the Test tab, select the Count - Good checkbox to enable the test parameter.This option sets the number of good beads that must be present with the tool parameters so that a part passes.b) Expand Count - Good and move the sliders or enter the minimum and maximum as 1 and 1.This means that the inspection must find one and only one bead within the ROI that meets the Good Bead Width definition.c) Select the Count - Narrow/Gap checkbox to enable the test parameter.This option sets the allowable number of gaps in the bead.d) Move the sliders or enter the minimum and maximum as 0 and 0.This means that no gaps are allowed. If gaps are found, the inspection fails.Figure 94. Test Criteria6. Test a complete range of good and bad samples to make sure that the sensor accepts good parts and rejects bad parts.Figure 95. Bad Part—Narrow Bead Width Figure 96. Bad Part—Gap8.3 Blemish ToolUse the Blemish tool to determine whether flaws are present on a part (for example, scratches on a disc), or to make sure that a featureexists on a part.Although finding features is more commonly an application for a Blob tool, the Blemish tool may be a better option to find a featurewhen dealing with variable materials or inconsistent lighting.Example applications:• Check for scratches on a part, and reject parts where the scratches are too numerous or larger than acceptable• Check for the presence of a label or marking on a part that may vary in brightness levelVE Series Smart Camerawww.bannerengineering.com - Tel: 763.544.3164 65
