MPICaptureConfig

Definition

typedef struct MPICaptureConfig {
    MPICaptureTrigger         source[MPICaptureSourceCOUNT];
                                   /* use MPICaptureSource to index */
    MPICaptureEdge            edge;
    MPICaptureTriggerGlobal   global;
    MPICaptureType            type;
    long                      captureMotorNumber;
    long                      feedbackMotorNumber; /* the same as 
                                  captureMotorNumber for POSITION capture */
    MPIMotorEncoder           encoder;
    long                      captureIndex;    /* 0,1,... */
} MPICaptureConfig;

Description

source[MPICaptureSourceCOUNT]	An array of capture trigger source inputs. The capture can be configured to trigger from one or more sources. See MPICaptureTrigger and MPICaptureSourceCOUNT.
edge	An enumerated index to the trigger edge type. The capture can be configured to trigger from a variety of logic. See MPICaptureEdge.
global	A structure to configure the global capture, to chain capture block triggering. See MPICaptureTriggerGlobal.
type	Specifies either postion-based or time-based capture. Use MPICaptureTypePOSITION for position-based capture and MPICaptureTypeTIME for time-based capture.
captureMotorNumber	The number of the motor whose "source" (MPICaptureTrigger) is used to capture position.
feedbackMotorNumber	The number of the motor whose position is being returned from the capture event. (It must be the same as captureMotorNumber for position capture).
encoder	Specifies the encoder feedback being captured.
captureIndex	A zero-based index that specifies which capture resource on an axis is to be associated with the capture object. Each axis on a node has a given number of captures associated with it. An axis may have up to 4 capture resources on it. At present, no vendor provides a node with more than one capture resource, therefore, captureIndex must be set to zero.

Remarks

Time-based capture will only work correctly if the speed of an axis is less than 344 million counts per second.