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PROFIBUS Power Hub Segment Coupler 3 (SK3)
PROFIBUS Commissioning
If manufacturer-specific GSD files are used, e.g., to define functionalities outside the profile,
proceed as follwos to identify whether it is a DP or PA GSD file:
■
If not already done, load the GSD file in your configuration tool.
■
Check which baud rates your configuration tool supports.
If a baud rate of 31.25 kBd is supported, this indicates a PA GSD file. The PA GSD file usually
only supports the baud rates 31.25 kBd, 45.45 kBd and 93.75 kBd.
If the data transfer rates are supported according to the PROFIBUS specification IEC 61158,
i.e., the baud rates 9.6 kBd to 1.5 MBd or 12 MBd, this indicates a DP GSD file.
Some PROFIBUS PA field device manufacturers do not offer PROFIBUS DP GSD files. In this
case, existing PROFIBUS PA GSD files must be converted. A suitable conversion software (a
GSD file converter) is available free-of-charge at www.pepperl-fuchs.com. The conversion
software enters the missing data transfer rates and sets necessary bus parameters to values
that enable the PROFIBUS DP to operate correctly.
When the GSD file is converted, several functions that were previously supported by the
original GSD file are restricted. The following functions can be affected:
■
FREEZE function is disabled.
■
SYNC function is disabled.
These functions are used with PROFIBUS DP to synchronize sensors/actuators. It is possible
that these functions do no longer work correctly because operations at the PROFIBUS DP end
(host end) run at data transfer rates of up to 12 MB/s and operations at the PROFIBUS PA end
(field end) run at a data transfer rate of 31.25 KB/s.
At present, many PROFIBUS functions are not supported yet. In case a field device does not
support a function, a message appears to inform you that these functions are no longer
available after conversion. The following functions are affected:
■
Master class 1 acyclic access
■
PROFIBUS DP V2 function: Data Exchange Broadcast (publisher/subscriber)
■
PROFIBUS DP V2 function: Isochronous mode, i.e., synchronous cyclic transmission
5.2.2
GSD Converter
If you need a conversion tool in order to convert PA GSD files into DP GSD files, you can use
the Fuchs GSD converter free of charge.
Using the Fuchs GSD Converter
In order to convert GSD files, proceed as follows:
1. Start the program PFGSDCX.EXE
The following dialog window appears:
Tip
Download Free Software Tool
If needed, download the Fuchs GSD converter from the product information page of
the device you obtained at www.pepperl-fuchs.com.
Note!
The advisory board of the PROFIBUS user organization has agreed not to rescind the
certification of GSD files that are modified using Fuchs GSD converter software.
