S7 200 PLC still been the star in this class of mini PLC. And MicroWIN as the programming software is always developed by Siemens as the maker. Step7 MicroWIN 4 is now support Windows 7 in both platform, 32 bit and 64 bit operating system.
All type of S7 200 (CPU21x and 22x) PLC fully supported by Micro WIN 4. And all program made by previous Micro WIN (Version 3.x) will be editable by Version 4, except you were use version 2.x, you must first save in STL in Micro WIN Version 2 then reopen/edit with Micro WIN Version 4.
STEP 7 MicroWIN V4.0.8.06 SP8.rar
Operating System: Windows (XP, Vista, Windows 7)
Platform: x86 & x64
Year: 2012 Released
Size: ~ 700 MB