Information on STEP 7 Versions
For programming controllers of the latest generation S7-1200, S7-1500, ET 200SP CPU and S7-1500 Software Controller you need STEP 7 (TIA Portal) Engineering Software. Of course you can program the older S7-300, S7-400 and SIMATIC WinAC controllers with this software as well.
Siemens offers a Combo License of STEP 7 Professional which enables the user to do the engineering within traditional STEP7 V5.x environment or by employing the STEP 7 Professional V15 (TIA Portal) platform. For further information see the section "Licensing" at the bottom of the page.