IMAQ Init VI

NI-IMAQ VI

IMAQ Init VI

Installed With: NI Vision Acquisition Software

Loads an NI-IMAQ configuration file and configures the image acquisition device.

IMAQ Init

Interface Name is the name of the interface to be loaded. The name must match the configuration file name used in Measurement & Automation Explorer (MAX).

Note Interface Name always identifies a single port of an image acquisition device. A port identifies a single independent data stream from a camera. All NI image acquisition devices support at least one port. Devices that support multiple ports can sustain independent and asynchronous acquisitions from the cameras on each port.

The port number may be explicitly identified by using the :: operator to append the port number suffix to the interface name. Port numbers are zero-based. For example, img0::1 opens port number 1 of the image acquisition device identified by img0. Interface names that do not have a port number suffix default to port 0. img0::0 and img0 are equivalent in meaning.

error in (no error) describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node.

	status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE.
	code code is the number identifying an error or warning. If status is TRUE, code is a non-zero error code. If status is FALSE, code can be zero 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 describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

IMAQ Session Out identifies the initialized device.

error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error.

	status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred.
	code is the error or warning code. If status is TRUE, code is a nonzero error code. If status is FALSE, code is 0 or a warning code.
	source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.

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