VEGA VEGACOM 557 Profibus FMS - Manual (Page 5)

VEGACOM 557 Profibus FMS 5
Product description
The data set is transferred from this buffer
memory into a process image. The protocol
conversion software enquires the stored data
cyclically from the individual storage areas.
The data sets are checked and converted
into the PROFIBUS data format. After the
conversion, the data are transferred into
emission memory and are sent from there to
the PROFIBUS. The PROFIBUS transmits the
data to the PROFIBUS master, loading them
via a special connection component.
The data communication between VEGACOM
557 and PROFIBUS master must be initiated
by the master which can enquire the re-
quested information by special commands.
Configuration
The component is compatible with 19" tech-
nology with 5 TE width (1 TE = 5.08 mm) acc.
to DIN 41 494. It can be used
- in carrier BGT 596
- in VEGALOG 571 carrier
- in housing type 505
The electrical connection is made via a plug
connector acc. to DIN 41 612 on the rear of
the component. The connection to LOGBUS
is made via an additional 5-pole plug connec-
tion mounted to the DIN plug connector.
There is a 9-pole D-SUB plug in the front
plate. It is used for connection of a PC via
RS 232 C to VEGACOM 557.
The component consists of two boards:
- the basic board
- the additional board
The power supply unit, the PC RS 232C inter-
face as well as the DISBUS/LOGBUS inter-
face are located on the basic board.
PC
interface
Connections of VEGACOM 557
PROFIBUS
LOGBUS
DISBUS
Supply
DISBUS
Buffer
memory Process
image
LOGBUS
Emis-
sion
memory PROFIBUS
Function of VEGACOM 557
Test
conver-
sion
By means of VEGACOM 557, as well as a PC
in conjunction with the adjustment software
VEGA Visual Operating (VVO), the con-
nected signal conditioning instruments can
be easily set up and configured. Further-
more, measured values and fault signals can
be shown graphically with the visualisation
software Visual VEGA (VV).
In a planned extension level, the PROFIBUS
master can also enquire, in addition to the
measurement data and status information,
the parameters of VEGAMET/VEGALOG,
receive them, and if necessary, modify and
return them. This strategy enables the com-
plete control of the behaviour of level and
process pressure measuring systems via
the PROFIBUS master.
The additional board is screwed to the basic
board and contains the microcontroller as
well as the PROFIBUS interface.