IMAQ1394 Read Registers

NI-IMAQ for IEEE 1394 Cameras VI

IMAQ1394 Read Registers

Accesses registers on the camera and reads an array of contiguous 32-bit quadlets from the camera. Data is byte-swapped for little endian alignment after transfer.

IMAQ1394 Session In is a unique reference to the camera, which you can obtain with IMAQ1394 Init.
address is the register location to access. Refer to the camera documentation for more information about camera-specific register ranges.
Note  Use the Property Node Properties»Camera Information»Base Address to get the base address for your camera.
Number of quadlets is the number of 32-bit quadlets to read. The default is 1.
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.
block is an array of 32-bit quadlets returned from the camera.
Quadlet is the first element of block. This output is convenient when performing single-quadlet register reads.
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.