Figure 31: Fdt/Dtm Communication Principle - WAGO 753-482 Manual

WAGO I/O System 750
753-482 2AI 4-20mA 12 Bit S.E. HART
In order to establish communication with the individual devices in an FDT
application and from there to be able to access the adjustable device parameters,
the application requires an addition in the form of a software component for each
field device.
The specific functions and dialogs of a field device for parameterization,
diagnosis and maintenance, including the user interface, are reproduced in such
a software component, which is referred to as a DTM (Device Type Manager).
Comparable with device driver software, the DTM is supplied with the device by
the device manufacturer and installed on the PC by the user. The DTM is
subsequently loaded into the FDT frame application from where it is executed.
FDT/DTM is an open concept, which encourages a uniform operating concept
within an overall control program in which individual components from different
manufacturers can work together.
WAGO provides a simple and convenient FDT frame application in the form of
the "759 370 WAGOframe FDT Frame Application" software.
Additional Information about WAGOframe
Please read the "759 370 WAGOframe FDT Frame Application" manual for
detailed information on the installation and use of the "759-370 WAGOframe"
Software. You will find this on the Internet at:
www.wago.com
By means of special gateway DTMs, the frame application is additionally
provided with further communications functions for connecting the host system to
the particular fieldbusses used (e.g., HART, PROFIBUS).
WAGO provides gateway DTMs for PROFIBUS (759-360 Profibus/HART
Gateway DTM) and MODBUS TCP (759-359 ModbusTCP/HARTGatewayDTM)
for this purpose.

Figure 31: FDT/DTM Communication Principle

Operating Modes 61
Manual
Version 1.2.0