IMAQ1394 Init

NI-IMAQ for IEEE 1394 Cameras VI

previous page next page

IMAQ1394 Init

Opens a camera, queries the camera for its capabilities, loads a camera configuration file, and creates a unique reference to the camera. Use IMAQ1394 Close when you are finished with the reference.

Camera Control Mode is the control mode of the camera used during image broadcasting. Open a camera in controller mode to actively configure and acquire image data. Open a camera in listener mode on a different host or target computer to passively acquire image data from a session that was opened in controller mode. The default value is Controller.
Camera Name is the name of the camera you want to open. The name (cam0, cam1,...cam N) must match the configuration file name you used to configure the camera in Measurement & Automation Explorer (MAX). You can also open a camera using its 64-bit serial number (uuid:XXXXXXXXXXXXXXXX), where the number following uuid must be a 64-bit hexadecimal number representing the internal serial number of the camera.
Note   Specify "uuid:serial number in hexadecimal representation" for the camera name when opening in listening mode. The serial number must match the serial number used in MAX.
error in (no error) is a cluster that describes the error status before this VI executes. If error in indicates that an error occurred before this VI was called, this VI may choose not to execute its function, but just pass the error through to its error out cluster. If no error has occurred, then this VI executes normally and sets its own error status in error out. Use the error handler VIs to look up the error code and to display the corresponding error message. Using the error in and error out clusters is a convenient way to check errors and to specify execution order by wiring the error output from one subVI to the error input of the next.
status is TRUE if an error occurred before this VI was called, or FALSE if not. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code.

code is a number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. Use the error handler VIs to look up the meaning of this code and display the corresponding error message.

source is a string that indicates the origin of the error, if any. Typically, source is the name of the VI in which the error occurred.

IMAQ1394 Session Out is a unique reference to the camera. IMAQ1394 Session Out is the same as IMAQ1394 Session In.
error out is a cluster that describes the error status after this VI executes. If an error occurred before this VI was called, error out is the same as error in. Otherwise, error out shows the error, if any, that occurred in this VI. Use the error handler VIs to look up the error code and to display the corresponding error message. Using error in and error out clusters is a convenient way to check errors and to specify execution order by wiring the error output from one subVI to the error input of the next.
status is TRUE if an error occurred, or FALSE if not. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code.

code is a number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code is zero or a warning code. Use the error handler VIs to look up the meaning of this code and display the corresponding error message.

source is a string that indicates the origin of the error, if any. Typically, source is the name of the VI in which the error occurred.

Note  Refer to Error Handling for error input and output information and error codes.
previous page start next page