"GSD file(type file):WELLE__X.200"
I cant find this name or file in the web!

How can I find this GSD file?
I want to install this GSD file,compile the HW and then download to the plc
s7-300.
the name of slave in drowing=synchronizing system III.
Slave tag=
electronic
syncro 3 profibus Dp
Gewerbestr/75015 Bretten
PLZ help as soon as possible