Device Communication Profibus Pa - Siemens SITRANS LG250 Operating Instructions Manual

Connection of the feeding power supply
unit
Altitude above sea level
Ʋ by default
Ʋ with connected overvoltage protection up to 5000 m (16404 ft)
Pollution degree
6)
Protection class
11.2 Device communication Profibus PA
In the following, the necessary device-specific details are shown. You can find further information of
Profibus PA on www.profibus.com.
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 output 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.
ID 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. Optionally in ad-
dition to this manufacturer-specific GSD file, PNO also provides a general so-called profile-specific
GSD file. 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.
When using the instruments on a segment coupler SK-2 or SK-3, no special GSD files are required.
SI0181B9
The following table shows the instrument ID and the GSD names for the SITRANS LG sensor series.
Device name
SITRANS series LG
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.
When used with fulfilled housing protection
6)
IEC 61010-1
7)
80
Instrument ID
Siemens Instrument class in
profile 3.02
0x81B9 0x9702
SITRANS LG250 - Operating Instructions
Networks of overvoltage category III
up to 2000 m (6562 ft)
4
III
7)
Siemens
SI0181B9.GSD
GSD file name
Profile-specific
PA139702.GSD
PBD-51041053