This method starts the scan process of the OCR reader device syncronous and returns the scan results. It overwrites the Scan method of the AutoIdDeviceType defined in 6.1.3.4.

Signature

Scan (

[in]ScanSettings Settings

[out]OcrScanResult [] Results

[out]AutoIdOperationStatusEnumerationStatus

);

Argument

Description

Settings

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

Results

Results of the scan execution. The OcrScanResult DataType is defined in 9.3.9.

Status

Returns the status of the scan operation.

The AutoIdOperationStatusEnumeration DataType is 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.