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.
TransferFromDevice( [out] Int32 TransferID, [out] Int32 InitTransferStatus);
Table 47 – TransferFromDevice Method arguments
|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