SIMATIC STEP 7 Professional Software Update Service (SUS) for STEP 7 in TIA Portal; within scope of this agreement you will receive for one year all up-to-date software versions. The contract is extended automatically by 1 year if it is not canceled 3 months prior to expiry. Period of delivery and service: 1 year from date of invoice. Requirement for conclusion: current version of the software -- content: set (4x DVD + 1x USB)