IFdtCommunication::DisconnectRequest() method information

M&M FDT 1.2.1 Online Specification
IFdtCommunication::DisconnectRequest() method information

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4.5.3.3 IFdtCommunication::DisconnectRequest()

This method can be called in the states:

HRESULT DisconnectRequest (
[in] FdtUUIDString invokeId,
[in] FdtXmlDocument fieldbusFrame,
[out, retval] VARIANT_BOOL* result
);

Description:

Releases a communication link to a device by an asynchronous function call. For more than one connection to the same device, the link is identified by the communication reference which is part of the fieldbus frame.

Parameters:

invokeId	Unique identifier for the request
fieldbusFrame	Fieldbus-protocol-specific information how to release the connection specified by a fieldbus specific schema e.g. like FDTHARTCommunicationSchema or FDTProfibusCommunicationSchema

Return Value:

result

TRUE Request sent FALSE Request refused

Behavior:

The method passes an XML document with communication parameters specified by a fieldbus specific schema. Based on this information the method sends the request to the next communication component or to the connected device, terminates all pending requests and returns without waiting for the result. The response will be provided by OnDisconnectResponse().

Comments:

See also chapter FDT ‘Use Cases and Scenarios’.

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Last updated 2015-02-05 15:17
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