Cognex In-Sight 1721, User Manual

Page: 41 / 156

In-Sight
®
1700 Series Wafer Reader Section 3: Configuring a Wafer ID Application
31
3.5.11 Character Spacing
When ‘Chars, SEMI’, ‘Chars, IBM’ or ‘Chars, Triple’ is the selected Mark, the Character
Spacing setting controls the tolerance of the spacing between adjacent characters and
the vertical alignment of the characters.
NOTE The current Character Spacing setting is used during tuning (Section 3.5.16).
SELECTION DESCRIPTION
Standard Spacing Reads the characters using standard SEMI specifications for character spacing and vertical
character alignment.
Relaxed Spacing Reads the characters with more tolerance for deviations from the specifications for character
spacing and alignment.
3.5.12 Color
The Color setting specifies the expected color of the wafer mark. In-Sight automatically
determines the correct color of the mark as imaged during the tuning process if the Color
checkbox in the Tune dialog is enabled.
SELECTION DESCRIPTION
Black Specifies a black mark on a light background. Use when Light Mode is set to Bright Field.
White Specifies a light mark on a dark background. Use when Light Mode is set to Dark Field.
NOTE The Color setting is ignored when the selected Mark is a barcode.
3.5.13 Retry
The Retry drop-down list specifies the tuning behavior of the Config during the retry
sequence at runtime. The retry order for Configs is specified in the Options tab (see
Section 3.6).
SELECTION DESCRIPTION
Disable (default) The Config will be tried, but not fine tuned*; fine tuning differs from the more exhaustive tuning
process during setup (see Section 3.5.16).
Enable The Config will be tried, and fine tuned.
Enable & Apply The Config will be tried and can be fine tuned. If tuned successfully the new settings will be
applied to the Config, overwriting the previous settings.
*Fine tuning adjusts the Light Power by
±
.5ms, in increments of .2ms. It also adjusts the Size region
±
1 pixel, both high and wide.
This continues on all enabled Configs until there is either a read or the timeout is exhausted.
NOTES
■ Enabled must be checked for a Config to be included in the retry sequence, regardless of the Retry
selection.
■ If Retry is enabled for multiple Configs that have identical settings, only one Config will be retried.
■ The Retry setting is ignored when the In-Sight protocol TUNE(<Config>) command is issued.