Siemens SIMATIC S7-200 System Manual page 460

S7-200 Programmable Controller System Manual
PROFIBUS--DP
Master
PROFIBUS--DP
Figure A-30 PROFIBUS- -DP/MPI Network
Device Database File: GSD
Different PROFIBUS devices have different performance characteristics. These characteristics
differ with respect to functionality (for example, the number of I/O signals and diagnostic
messages) or bus parameters, such as transmission speed and time monitoring. These
parameters vary for each device type and vendor, and are usually documented in a technical
manual. To help you achieve a simple configuration of PROFIBUS, the performance
characteristics of a particular device are specified in an electronic data sheet called a device
database file, or GSD file. Configuration tools based on GSD files allow simple integration of
devices from different vendors in a single network.
The device database file provides a comprehensive description of the characteristics of a device
in a precisely defined format. These GSD files are prepared by the vendor for each type of device
and made available to the PROFIBUS user. The GSD file allows the configuration system to read
in the characteristics of a PROFIBUS device and use this information when configuring the
network.
The latest versions of the COM PROFIBUS or STEP 7 software include configuration files for the
EM 277 PROFIBUS--DP Module. If your version of software does not include a configuration file
for the EM 277, you can access the latest GSD file (SIEM089D.GSD) at website
www.profibus.com.
If you are using a non-Siemens master device, refer to the documentation provided by the
manufacturer on how to configure the master device by using the GSD file.
446
S7-300
XPUTS/XGETS
STEP 7--Micro/WIN
Functions
MPI
PROFIBUS--DP
MPI
EM 277
PROFIBUS--DP
Module
S7-22x CPU
1 1,2
TD 200
MPI MPI
PROFIBUS--DP/MPI
1) Communications are possible only to the
S7-200 CPUs and the EM 277.
2) TD 200 must be Rel 2.0 or greater.