COMES Logon is the basic module of the system providing user management (access rights administration, login of users) and administration of COMES in whole. In the module can user create the plant module structure of assets (production equipment, units, machines, lines ...) in acc. with the international standard ANSI/ISA-S95. All configuration changes are stored in audit trail records. Modul serves to other COMES modules for its integration and their diagnostics.