2
PROFIBUS PA
8
VFC 200
www.krohne.com
06/2019 - 4005059401 - AD VFC200 PB-PA R01 en
2.5 PROFIBUS PA Profile implementation
The PROFIBUS PA Profile 3.02 defines standardised parameters and functions for PROFIBUS
devices used for process control. It describes a PROFIBUS device as a function block application,
i.e. parameters and functions are grouped into different blocks. In the Vortex PROFIBUS device
the following blocks are implemented:
The Analog Input Function Block and the Totalizer Function Blocks provide the data interface
towards a process control system (e.g. a PLC); i.e. their input/output data can be read/written by
the control system. In a PROFIBUS network this is done via cyclic communication services.
From the PROFIBUS point of view the device is designed as a compact device with 8 slots.
While the Analog Input function blocks are assigned to slot 1, 2, 5, 6, 7 the Totalizer Function
Blocks are assigned to slot 3 and 4 and the Analog Output Block is assigned to slot 8.
This assignment is fixed and cannot be modified by the user. Nevertheless during network
configuration the user can choose which function block data shall be transferred between the
PROFIBUS master and the PROFIBUS device.
2.6 GSD files
The GSD file contains information that will be needed for configuration of the PROFIBUS DP
communication network. Supplementary files (e.g. ___.bmp and ___.dib) contain icons which will
represent the PROFIBUS devices in the view of the bus configuration system/master system.
The files must be loaded into the configuration program before. Follow the instructions in the
manual of the host supplier when installing GSD file and supplementary files.
A PROFIBUS GSD ZIP file including both all GSD files of all devices with PROFIBUS PA interface
and all additional data files mentioned above are available at the manufacturer internet site.
Block
Usage
1 Physical Block (PB)
Contains identification and diagnosis parameters of the device.
1 Flow Transducer Block (TB-Flow)
Contains parameters and functions to control the flow measurement.
1 Auxiliary Transducer Block - manufacturer
specific (TB-AOut)
Contains parameters and functions to control an AO function block
used for input of external measuring values.
5 Analog Input Function Block (AI-FB)
Contains parameters and functions to control the measuring output;
provides the measuring value(s).
2 Totalizer Function Blocks (TOT-FB)
Contains parameters and functions to control/provide the counter
value(s).
1 Analog Output Function Block (AO-FB)
Contains parameter and functions to control the measuring input;
provides external measuring values to be used in the device.
Table 2-5: Implemented blocks
INFORMATION!
If it is supported by the host configuration tool the device entry for the PROFIBUS device will be
located within the slave family "PROFIBUS PA".
