VEGA VEGACAL 62 Profibus PA - Manual (Page 43)

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10 Supplement
VEGACAL 62 • Profibus PA
30025-EN-130917
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 VEGACAL 62
the ID number is 0x076E(hex) and the GSD file CL__076E.GSD. Optionally to this manufacturer-
specific GSD file, PNO provides also a general so-called profile-specific GSD file. For VEGACAL 62
you have to use the general GSD file PA139700.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 oper-
ates with the manufacturer-specific ID number.
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.
pF % Lin%
Min-Max
adjustment Linearization
PROFIBUS PA-output
Primary
Value
Secondary
Value 2
Secondary
Value 1
Target
Mode
Failure
mode
Alarms Scaling
Source for
scaling
t
i
Damping
Sensor
characteristics
PA-Out
TB
FB
Select additional cyclic
value
Fig. 25: VEGACAL 62: Block diagram with AI (PA-OUT) value and additional cyclical value
TB Transducer Block
FB Function Block
Module of the PA sensors
For the cyclic data traffic, VEGACAL 62 provides the following modules:
•
AI (PA-OUT)