This FunctionalGroupis inherited from theAutoIdDeviceTypeand described in 6.1. Predefined runtime parameters for the OpticalReaderDeviceType are defined in Table 12.

The parameters TemplateNameand MatchCodeare described in 6.2.3.1.

For quality and testing purposes, the actual image taken by the optical reader can be accessed with this object. E.g. the picture might be checked by engineers if the optical decoding does not deliver the expected results.

The Images Objectwhen available shall contain the list of FileType Objects(see Table 12) with the images taken by the optical reader.

The MIME type of an image is provided through the MimeType Propertyof the FileType.

This method starts the scan process of the optical reader device synchronous and returns the scan results. It overwrites the Scanmethod of the AutoIdDeviceTypedefined in 6.1.3.4.

Signature

Scan(

[in]ScanSettings Settings

[out]OpticalScanResult [] Results

[out]AutoIdOperationStatusEnumerationStatus

);

Argument

Description

Settings

Configuration settings for the scan execution. The ScanSettings DataTypeis defined in 9.3.7.

Results

Results of the scan execution. The OpticalScanResult DataTypeis defined in 9.3.10.

Status

Returns the status of the scan operation.

The AutoIdOperationStatusEnumeration DataTypeis defined in 9.2.1.

Method Result Codes

ResultCode

Description

Bad_InvalidState

There is already a scan active

Bad_InvalidArgument

The scan setting contained an invalid value like infinite duration.

Other OPC UA status codes defined for the Call Service in OPC 10000-4.