FDT – A Brief Introduction
FDT Tools
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ifak system GmbH
Figure 3: Interaction of the Comm-Objects
If the check was successful, what means that the channel and the
DeviceDTM speak in the same "language" (HART, Profibus DP/
V1 etc.), the communication between channel and DTM can be
established. To achieve this the channel supports the interface
IFdtCommunication. The interface contains the fieldbus access
functionality (connection establishment, termination, data trans-
fer). The communication between both components is now estab-
lished.
If the DeviceDTM invokes a communication request via IFdt-
Communication the channel is responsible for the handling of the
request. The response of the device is transmitted to the DTM
through its IFdtCommunicationEvents interface.
