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Part Finding Sensors and Trigger Types
Part Finding Sensors are used differently for different trigger types.
With an Internal Trigger, a Part Finding Sensor is • required. The Part Finding Sensor tells
Checker that a part is present.
With an External Trigger, a Part Finding Sensor is optional. If you do not use a Part Finding •
Sensor, then the presence or measurement sensors will run in xed positions. If you use
a Part Finding Sensor, then both the Part Finding Sensor and the External Trigger must
indicate a part before Checker will check it.
In Free Running mode, a Part Finding Sensor is optional. If you do not use a Part Finding •
Sensor, then the presence or measurement sensors will run in xed positions. If you use
a Part Finding Sensor, then the Part Finding Sensor must detect a part in an image before
Checker will check it.
In all cases, if a Part Finding Sensor is used, then Checker uses the part’s detected location to
position the presence or measurement sensors.
Modifying a Part Finding Sensor
You can change the location where Checker looks for the part by simply moving the Part
Finding Sensor search region.
To change what a Part Finding Sensor looks for, you must either
Create a new Part Finding Sensor in Setup mode.•
Use the External Retrain feature in Setup mode or Run mode.•
1 The feature Checker is looking for.
2 The Search Region (where Checker looks for the feature).
Part Finding Sensor
A Part Finding Sensor detects and locates your part in the image. You create a Part Finding
Sensor by drawing a box around a feature of part that is present on both good and bad parts.
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