If S7-300/400 master station with STEP 7 configuration PROFIBUS network. To configure the third-party DP slave, you need to install the GSD file. You can see it in the Hardware Catalog window after installation.
To delete STEP7 hardware catalog third party DP slave, first install the “S7DATA” in STEP7 folder> GSD file “GSD” subfolder deleted installation. Then execute the hardware configuration of STEP7 “Options” menu “update catalog” command .