M&M FDT 1.2.1 Online Specification
 IDtmSingleInstanceDataAccess::Write() method information


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4.3.19.3 IDtmSingleInstanceDataAccess::Write()


This method can be called in the states:            

HRESULT Write (
[in] FdtXmlDocument itemList,
[out, retval] FdtXmlDocument* result
);


Description:
Write performs synchronous exchange of a data structure with a DTM.

Parameters:
itemListList of required items described by a DtmItemList specified by the DTMItemListSchema


Return Value:
resultData as DtmItemList that contains the device data of the successfully written data specified by the DTMItemListSchema (may differ to the written value due to e. g. rounding procedures within the device)


Behavior:
Via this method the Frame Application requests a DTM to write the specified data to its instance data set. The DTM has to check, whether it could manipulate the instance data set by requesting a lock. If the lock request fails the DTM has also to refuse the request. Furthermore the DTM has to apply the business rules in order to keep the instance data set consistent.

Comments:





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