TrendStorageReader.Read (METH)

METHOD Read : ETrendStorageReaderErrors

Reads data from the trend storage.

InOut:

Scope	Name	Type	Comment
Return	Read	ETrendStorageReaderErrors	A ETrendStorageReaderErrors value indicating, whether the processing has been completed successfully or not: ETrendStorageReaderErrors.NoError: Completed successfully ETrendStorageReaderErrors.NotInitialized: Call to method Initialize has not been done ETrendStorageReaderErrors.WrongParameter: If the ITrendStorageReaderConsumer instance is invalid ETrendStorageReaderErrors.AdditionalReadCallRequired: Reading has been completed successfully, but there is additional call of method ContinueReading necessary to read the rest of the data
Input	liTimstampFrom	LINT	The absolute timestamp of the 1st sample
	liTimstampTo	LINT	The absolute timestamp of the last sample
	itfTrendStorageReaderConsumer	ITrendStorageReaderConsumer	An instance of ITrendStorageReaderConsumer, to which the data read from the trend storage will be passed.