Siemens Software. Free LOGO, S7-200, S7-300, S7-400 and S7-1200 Software. Step7 Micro/Win: Use With: S7-200 PLCs. Restrictions: Link Shows you how to. Happy to hear this - STEP 7 MicroWIN V4.0 SP8 and SP9 - Available for DownloadDidn't expect that this will happen this soon. SIMATIC S7-200 SMART PLC is designed to suit the needs of developing markets that have higher pressures of price and demands on performance. Providing an excellent performance-to-price ratio, SIMATIC S7-200 SMART PLC when combined with other SMART drive products from Siemens helps in building extremely cost effective efficient automation solutions.