TransferFromDevice initiates the transfer of values from the physical device to corresponding Parameters in the offline representation of the Device. This Method has no input arguments. Which Parameters are transferred is based on Server-internal knowledge.

Once the transfer has been started successfully, the Method returns immediately with InitTransferStatus = 0. Any status information regarding the transfer itself has to be collected using the FetchTransferResultData Method.

The signature of this Method is specified below. Table 47 and Table 48 specify the arguments and AddressSpace representation, respectively.

Signature

TransferFromDevice(

[out] Int32 TransferID,

[out] Int32 InitTransferStatus);

Table 47 – TransferFromDevice Method arguments

Argument	Description
TransferID	Transfer Identifier. This ID has to be used when calling FetchTransferResultData.
InitTransferStatus	Specifies if the transfer has been initiated. 0 – OK -1 – E_NotLocked – the Device is not locked by the calling Client -2 – E_NotOnline – the Device is not online / cannot be accessed

Table 48 – TransferFromDevice Method AddressSpace definition

Attribute	Value
BrowseName	TransferFromDevice
References	NodeClass	BrowseName	DataType	TypeDefinition	ModellingRule
HasProperty	Variable	OutputArguments	Argument[]	PropertyType	Mandatory