SIMATIC STEP 7 Basic. Version V12 (stock-no. 735-2907) for WIN XP (32 Bit) and WIN 7 (32 Bit). Version V13 (stock-no. 828-5268) for WIN 7 (32 Bit, 64 Bit) and WIN 8 SP1 (64 Bit). Engineering-SW for Configuration of SIMATC S7-1200 and Basic Panels. Single