SIMATIC S7, STEP 7 Basic, Software Update Service Compact for multiple orders on one position, these deliveries are grouped. Minimum order quantity: 3 units Within the framework of this contract, 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 (3x DVD + 1x USB)