62 Operating Modes
WAGO I/O System 750
753-482 2AI 4-20mA 12 Bit S.E. HART
Manual
Version 1.2.0
Additional Information about the Download of the HARTGatewayDTMs
The gateway DTMs for PROFIBUS (759-360 Profibus/HARTGatewayDTM) and
MODBUS TCP (759-359 ModbusTCP/HARTGatewayDTM) are available for
downloading free of charge from the Internet at:
www.wago.com
Additional Information about the FDT Technology
You will find more detailed information on FDT technology on the FDT-Group
website at:
www.fdt-group.org
8.3
HART on PROFIBUS
The PROFIBUS specification provides an open solution especially for
incorporating HART in PROFIBUS systems. Here, the HART protocol is taken
into account in the specification as a PROFIBUS profile, which is also referred to
as “HART on PROFIBUS” for short.
This solution includes the use of the PROFIBUS communications mechanisms
without change to the PROFIBUS protocol and services, the PDUs or the state
machines and functional characteristics.
The HART client application is integrated within a PROFIBUS master and the
HART master within a PROFIBUS slave, the latter serving as a multiplexer and
handling the communication with the HART devices.
Figure 32: Operation of HART Devices via PROFIBUS
