Cognex DataMan 260, Справочное руководство

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External Triggering and Trigger Modes
If you are using external triggering, you can use any of the following methods to trigger your DataMan 260 reader:
1. Press the Trigger button (
) on the reader.
2. Send a pulse on the I/O cable: T (blue), Trigger - (black).
3. Send a serial trigger command over the RS-232 or the Ethernet connection.
4. Click the Trigger button (
) or press <Ctrl>-T in DataMan Setup Tool.
DataMan 260 supports a variety of trigger modes:
l
Single : Acquires a single image and attempts to decode any symbol it contains or more than one symbol in cases
where multicode is enabled. The reader relies on an external trigger source.
l
Presentation : Repeatedly scans for a symbol and decodes it whenever one is detected. The reader relies on an
internal timing mechanism to acquire images.
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Manual (default): Begins acquiring images when you press the trigger button on the reader or the discrete trigger
input is activated, and continues acquiring images until a symbol is found and decoded or you release the button
or the discrete trigger input is deactivated.
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Burst : Performs multiple image acquisitions based on an external trigger and decodes one or multiple symbols
appearing in the sequence of images.
l
Self : Similar to Presentation mode in that the reader perpetually scans for symbols and decodes them each time
one is detected. Unlike Presentation mode, however, Self mode supports multicode results and a decode attempt
occurs with every image. The main difference between Self and Presentation is the fixed and exact interval for
image acquisitions in Self .
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Continuous : Begins acquiring images based on a single external trigger and continues to acquire images until a
symbol is found and decoded, or until multiple images containing as many codes as specified in multicode mode
are located, or until the trigger is released.
Training and Trigger Modes
Training is supported for the following trigger modes:
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Single trigger
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Burst mode
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Self trigger
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Continuous mode
Training
Training your reader with the expected symbology may help increase decode yield. To train your reader, place a code in
front of the reader and do one of the following:
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Press and hold the trigger button ( ) for at least 3 seconds and the release it.
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Click and hold the trigger button in the DataMan Setup Tool ( ) for at least 3 seconds and then release it.
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Click Train Code in the Action ribbon of the DataMan Setup Tool.
If using Single trigger mode, upload the code through File -> Train Image .
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Using Your DataMan 260