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M&M FDT 1.2.1 Online Specification |
Interfaces and Methods - Schemas - FDT Specification - Quicklinks - Abbreviations
4.5.6.1 IFdtChannelScan::ScanRequest()
| This method can be called in the states: |    |
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HRESULT ScanRequest ( [in] FdtUUIDString invokeId, [in] FdtXmlDocument request, [out, retval] VARIANT_BOOL* result ); |
Description:
| Requests the asynchronously scan of the sub topology. |
Parameters:
| invokeId | Unique identifier for the request |
| request | Information about the address range(s) to scan. FDTTopologyScanRequestSchema |
Return Value:
| result | TRUE Request of sub-topology scan accepted. FALSE The operation failed. IDtmEvents:OnErrorMessage() assumed. |
Behavior:
| This method requests the scan of the sub topology. More than one scan response (provisional, final or error) can be returned via IDtmScanEvents::OnScanResponse() |
Comments:
| The ability to provide provisional scan responses is intended especially for "slow" fieldbus protocols. The operator will see how the life list is growing. It is possible to stop the scan, if the operator received enough information. |
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Last updated 2015-02-05 15:17
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