Latching is where the frame grabber board (such as the IDS Eagle) or digital camera (such as the IDS uEye) signals a digital IO line connected to the motion controller (normally through the SLC or VisionBox switching hardware). This latch signal is sent via a separate six pin Hirose type connector on the IDS Eagle or uEye.
Latching allows the camera frame data and stage position to be more accurately synchronized which allows for faster and more accurate focus operations.
Vision systems (other than CMMV / HP-C-VE) with an FDC controller require latching. Other controller configurations, such as the Metronics QC5000, Heidenhain IK5000, or Hexagon Embedded/Mycrona, do not support latching.
For systems that do not support latching, the FrameGrabber_LatchingMode value in the PC-DMIS Settings Editor must be set to 0.
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