VEGA VEGASON 63 Profibus PA - Manual (Page 44)

44
10 Supplement
VEGASON 63 • Profibus PA
28786-EN-130417
10.2 Profibus PA
Instrument master file
The instrument master file (GSD) contains the characteristic data of the Profibus PA instrument.
These data are, e.g. the permissible transmission rates as well as information on diagnostics values
and the format of the measured value outputted by the PA instrument.
A bitmap file is also provided for the Profibus network planning tool. This file is installed automati-
cally when the GSD file is integrated. The bitmap file is used for symbolic indication of the PA instru-
ment in the configuration tool.
Ident number
Each Profibus instrument gets an unambiguous ident number (ID number) from the Profibus user
organisation (PNO). This ID number is also included in the name of the GSD file. For VEGASON 63
the ID number is 0x0770(hex) and the GSD file "SN__0770.GSD". As an option to this manufactur-
er-specific GSD file, PNO provides also a general so-called profile-specific GSD file. For VEGASON
63 you have to use the general GSD file "PA139701.GSD". If the general GSD file is used, the
sensor must be set to the profile-specific ident number via the DTM software. By default, the sensor
operates with the manufacturer-specific ID number.
Note:
When using the profile-specific GSD file, the PA-OUT value as well as the temperature
value are transmitted to the PLC (see block diagram "Cyclical data traffic").
Cyclical data traffic
The master class 1 (e.g. PLC) cyclically reads out measured values from the sensor during opera-
tion. The below block diagram below shows which data can be accessed by the PLC.
m(d) % Lin%
Min-Max
adjustment
Linearization
PROFIBUS PA-output
Primary
Value
Secondary
Value 1
Secondary
Value 2
Target
Mode
Failure
mode
Alarms Scaling
Source for
scaling
t
i
Damping
Sensor
characteristics
PA-Out
TB
FB
Select additional cyclic
value
Fig. 28: VEGASON 63: Block diagram with AI (PA-OUT) value and additional cyclical value
TB Transducer Block
FB Function Block