SIMATIC STEP 7 Prof. V15.1 Upgrade V11..V14-> V15.1 or V11/2010..V14/2017-> V15.1/2017 SR1 or 2006..2010-> V15.1/2017 SR1 Combo Floating License DL; Engineering Software in the TIA Portal; also applies for upgrade from V11 single licenses; software, documentation and license key for download; Class A; 6 languages: de, en, fr, es, it, zh; executable in Windows 7 (64 bit), Windows 10 (64 bit), Windows Server 2012/16 (64); ******************************* E-mail address required for delivery