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FDT/DTM – The standard solution for device conguration
FDT/DTM – The standard solution for device conguration
Field Device Tool (FDT)
FDT technology species and standardises the integration
of communicating devices from different manufacturers. It
makes use of a superimposed device management program.
The key feature is its independence from the communication
protocol and software used by the device and the host
system. FDT allows access to any device from any host using
any protocol.
Device Type Manager (DTM)
Device manufacturers make available a Device Type
Manager (DTM) software driver for each device or device
group. The DTM species all device-specic information,
functions and rules (such as the device structure,
communication capabilities, internal dependencies and the
human-machine interface (HMI)). DTMs dene functions for
access to device parameters, troubleshooting, conguration
and operation of devices. DTMs are available which can be
simple GUIs for setting device parameters or more complex
applications that are capable of carrying out calculations for
diagnostic or maintenance purposes.
There are several different types of DTMs:
• Device DTM
This is a “normal“ eld device that uses communication
channels to communicate with the connected physical
device.
• Communication DTM
This is a communications device that provides
communication using communication channels.
Communication channels provide access to the
communications infrastructure (such as PC interface cards
or modems). They are used by device DTMs or gateway
DTMs for communication services.
• Gateway DTM
This is a gateway device. It allows data to be exchanged
between two communication channels. For example,
this could be a gateway between PROFIBUS-DP and
PROFIBUS-PA.
The DTM is loaded and started up within a FDT container
program or “frame“ application.
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Technical appendix/Glossary
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