DESCRIPTION AND OPERATION SYSTEM DESCRIPTION WBPEEUI350001B0 2 - The Ethernet server database requires configuration to define tag names that supervisory computers will access for reading and writing values, and receiving exception reports. The configuration defines a correspondence of INFI 90 OPEN addresses, indexes and tag names to the tag names in the Ethernet server database. Thus, the Ethernet server database configuration (in conjunction with the semAPI interface) allows application programming development to be independent of the interface to the INFI 90 OPEN control system. Ethernet server database configuration is done via one of the supervisory computers (online configuration only) or from a keyboard and monitor attached to the Ethernet server module (offline configuration). System operation on the INFI-NET side of the Ethernet server is typical of INFI-NET communication interface operation. Refer to the INFI-NET to Computer Interface (INICI01/03) instruction fora description of operation for this portion of the open systems manager.