Description: Whether this bus is currently operating with its primary configuration or its backup configuration. The returned value of this variable depends on the settings of the first eight variables in the Hot Failover group: Bus A Primary Backbone Slot #, Bus A Primary Backbone Media, Bus B Primary Backbone Slot #, Bus B Primary Backbone Media, Bus A Backup Backbone Slot #, Bus A Backup Backbone Media, Bus B Backup Backbone Slot #, and Bus B Backup Backbone Media. This variable returns not-in-use(200) if both internal and external hot failover detection are disabled for this bus, or if there is a problem in the configuration for the bus, which might be due to contradictory settings of some of the variables in the Hot Failover group.