Siemens SIMATIC PLC 6AV2103-0XA00-0AM0 SIMATIC WINCC PROFESSIONAL  MAX. POWERTAGS, SUS (COMPACT)  SOFTWARE UPDATE SERVICE,  WITH MULTIPLE ORDERS FROM ONE  ITEM SUPPLIES WILL BE COMBINED  INTO ONE PACKAGE.  MINIMUM QUANTITY ORDER: 3 PCS.  WITHIN THE FRAMEWORK OF THIS  CONTRACT, YOU WILL RECEIVE  UPDATED SOFTWARE VERSIONS  FOR A PERIOD OF ONE YEAR.  IF IT IS NOT CANCELED THREE  MONTHS PRIOR TO ITS EXPIRATION.  PERIOD OF DELIVERY AND  PERFORMANCE:  1 YEAR FROM DATE OF INVOICE  PREREQUISITE FOR CONTRACT:  CURRENT VERSION OF THE SOFTWARE 6AV21030XA000AM0