Cognex DataMan 200Q Series, Краткое руководство пользователя

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18 DataMan 200 Quick Reference Guide DataMan 200 Quick Reference Guide 19
DataMan 200 Triggering Trigger Modes
Trigger the reader using any of the following methods:
• Press the trigger button on the reader.
• Send a pulse on the I/O cable:
T (blue), Trigger - (black)
• Send a trigger command over the RS-
232 connection or Ethernet connection.
• Click the Trigger button in the Setup
Tool:
• Press <CTRL>-T on the keyboard.
DataMan supports a variety of trigger modes:
• 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.
• Presentation: Repeatedly scans for a symbol and decodes it
whenever one is detected. The reader relies on an internal timing
mechanism to acquire images.
• Manual (default): Begins acquiring images when you press the
trigger button on the reader, and continues acquiring images until a
symbol is found and decoded or you release the button.
• Burst: Performs multiple image acquisitions based on an external
trigger and decodes any symbol appearing in a single image or
within a sequence of images, or multiple symbols in a single image
or within a sequence of images when multicode is enabled. You can
control the number of images within each burst and the interval
between image acquisitions.
• 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.
• 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 speciied in multicode mode are located, or until the trigger is
released.