NI 5431 Composite Video Generator
IMAQ VI Error Clusters

IMAQ Vision VIs use a standard control and indicator (error in and error out) to notify you that an error has occurred.

error in (no error) is a cluster that describes the error status before the VI executes. If error in indicates that an error occurred before the VI was called, the VI might choose not to execute its function but just pass the error through to its error out cluster. If no error has occurred, the 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 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 the VI was called or FALSE if not. If status is TRUE, code is a nonzero error code. If status is FALSE, code can be 0 or a warning code. code is the number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code can be 0 or a warning code. Use the Error Handler VIs to look up the meaning of this code and to display the corresponding error message. source is a string that indicates the origin of the error, if any. Usually, source is the name of the VI in which the error occurred.

error out is a cluster that describes the error status after the VI executes. If an error occurred before the VI was called,error out is the same as error in. Otherwise,error out shows the error, if any, that occurred in the VI. Use the Error Handler VIs to look up the error code and to display the corresponding error message. Using error in anderror 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 can be 0 or a warning code. code is the number identifying an error or warning. If status is TRUE, code is a nonzero error code. If status is FALSE, code can be 0 or a warning code. Use the Error Handler VIs to look up the meaning of this code and to display the corresponding error message. source is a string that indicates the origin of the error, if any. Usually, source is the name of the VI in which the error occurred.