KROHNE UFC 400 PROFIBUS PA-PROFIBUS DP - Manual (Page 9)

PROFIBUS DP
2
9
UFC 400
www.krohne.com 05/2014 - 4003118502 - AD UFC 400 PROFIBUS R02 en
2.5 PROFIBUS PA Profile implementation
The PROFIBUS PA Profile 3.02 defines standardized 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 UFC 400 PROFIBUS device
the following blocks are implemented:
The Analog Input Function Blocks 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 UFC 400 device is designed as a compact device with 9
slots. While the Analog Input function blocks are assigned to slot 1, 2, 6, 7, 8 and 9 the Totalizer
Function Blocks are assigned to slot 3, 4 and 5. 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 KROHNE devices with PROFIBUS PA
interface and all additional data files mentioned above are available at the KROHNE download
page.
Block Usage
1 Physical Block (PB) contains identification and diagnosis parameters of the device
1 Flow Transducer Block
(TB)
contains parameters and functions to control the flow measurement
6 Analog Input Function Block
(AI-FB)
contains parameters and functions to control the measuring output;
provides the measuring value(s)
3 Totalizer Function Blocks
(TOT-FB)
contains parameters and functions to control/provide the counter
value(s)
INFORMATION!
If it is supported by the host configuration tool the device entry for the UFC400 PROFIBUS device
will be located within the slave family "PROFIBUS PA".