This OPC UA ObjectType represents an optical verifier device (1D or 2D codes). It defines additional methods and properties required for managing optical code verifiers or to get additional information on their scan events.

Figure 9 shows an overview for the OpticalVerifierDeviceType with its Methods and related ObjectType. It is formally defined in Table 13.

Figure 9 – OpticalVerifierDeviceType overview

The OpticalVerifierDeviceType is formally defined in Table 13.

Table 13 – OpticalVerifierDeviceTypeDefinition

Attribute	Value
BrowseName	OpticalVerifierDeviceType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Modelling Rule
Subtype of OpticalReaderDeviceType defined in 6.3.
HasComponent	Method	Scan			Optional
GeneratesEvent	ObjectType	OpticalVerifierScanEventType	Defined in 7.5.

The OpticalVerifierDeviceType ObjectType is a concrete type and can be used directly.

This method starts the scan process of the optical verifier device synchronous and returns the scan results. It overwrites the Scan method of the OpticalReaderDeviceType defined in 0.

Signature

Scan (

[in]ScanSettings Settings

[out]OpticalVerifierScanResult [] 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 OpticalVerifierScanResult DataType is defined in 9.3.11.
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.