Cognex In-Sight 1721, User Manual

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Section 3: Configuring a Wafer ID Application In-Sight
®
1700 Series Wafer Reader
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To tune a Config:
Choose the tune options to try by enabling/disabling the checkboxes. By default, Color,
Light and Size are enabled. Disabling a checkbox causes tuning to use the current
definition for the corresponding setting in the Config.
When the Color checkbox is enabled, both black and white mark colors are tried
during the tuning process.
Light Mode and Light Power are automatically tuned if the Light option is
enabled. If the Light option is disabled, the current Config settings for Light Mode
and Light Power are used.
When the Size option is enabled, tuning will try sizes ± 10 pixels from the current
Size setting in the Config.
During tuning:
Click Pause to pause tuning. Click Continue to resume tuning from where it left
off.
Click Accept to stop tuning and update the Config with the settings of the best
read so far (the Accept button will be grayed out until the first passed read).
Click Reset to stop tuning and discard the tuning results.
Click Back to stop tuning, discard the tuning results, and return to the Config
settings.
After tuning is completed:
Click Accept to apply the tuned settings to the Config.
Click Reset to re-initialize all tuned settings. Select a different combination of
tuning options, then click the Start button to tune again.
Click Back to return to the Config settings. The Config will be updated with the
tuned results if Accept was clicked previously. Otherwise, the tuned settings will
be discarded.
TUNING TROUBLESHOOTING TIPS
■ Make sure the Field String contains the correct number of characters, and any dots, dashes, and
spaces are in the correct positions.
■ Make sure the correct Checksum is selected (for Chars).
■ Make sure Region and Size settings are reasonable before tuning.
3.5.17 Read
The Read button, below the Config settings, acquires an image and performs a “test”
read on the wafer mark using the current Config. The String and Score results are
reported to the right. If the read passes, the String appears on a green background; failed
reads appear on a red background.