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M&M FDT 1.2.1 Online Specification |
Interfaces and Methods - Schemas - FDT Specification - Quicklinks - Abbreviations
4.5.1.1 IFdtChannel::GetChannelParameters()
| This method can be called in the states: |       |
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HRESULT GetChannelParameters ( [in] FdtXPath parameterPath, [in] FdtUUIDString protocolId, [out, retval] FdtXmlDocument* result ); |
Description:
| Returns an XML document with fieldbus dependent channel specific parameters. |
Parameters:
| parameterPath | FdtXPath within the XML document |
| protocolId | UUID of a fieldbusprotocol. This UUID may be - one of the UUIDs returned by GetSupportedProtocols() and specified by DTMProtocolsSchema - a UUID defined within the appropriate <ChannelReference> element of the DTMParameter document returned by the DTM |
Return Value:
| result | XML document with the channel specific parameters specified by a schema e.g.like FDTHARTChannelParameterSchema or FDTProfibusChannelParameterSchema |
Behavior:
| Returns an XML document with the channel specific parameters specified by a fieldbus specific schema. The fieldbus is selected by the parameter protocolId. The returned parameters are especially used for channel assignment. The document can be empty for devices without fieldbus master. Channels that do not have any process related data (e.g. a pure Communication-Channel) should return a document based on FDTBasicChannelParameterSchema. It is recommended, to return instead of an empty document a document based on the FDTBasicChannelParameterSchema. If the requested protocol UUID is not supported by this channel it is recommended to return a document based on the FDTBasicChannelParameterSchema. This at least gives some basic info for the caller. |
Comments:
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