Without question, the and safest source for any Siemens software is the Siemens Industry Online Support (SIOS) .
If you are moving to a newer software version (e.g., from STEP 7 V5.6 to V5.7), you can use the ALM to perform a "License Key Upgrade" provided you have the necessary upgrade key. Downloading Top Siemens S7 Software keys7 siemens download top
(formerly Industry Mall and Online Support) is the primary resource. Registration Without question, the and safest source for any
Open your TIA Portal or STEP 7 software. Go to Help > License Information . You should see the product marked as "Licensed." from STEP 7 V5.6 to V5.7)