SIMATIC WinCC Professional 512 Power Tags, SUS (Compact) Software Update Service, 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 expiration. Period of delivery and service: 1 year from date of invoice Requirement for conclusion: current version of the software