A computer system independently maintains states of multiple condition indicators as logical state data, each indicator for a different respective condition and having at least an active and inactive state. Multiple condition indicators share a single human-perceptible physical indicator having at least (N+1) states, where N is the number of condition indicators, the physical indicator states including a state for all conditions inactive, and a respective separate state for each respective condition active. Preferably, the conditions comprise a fault condition and an identify condition, and the physical indicator is a light which is off if neither condition is active, is constant on if the fault condition is active, and is flashing if the identify condition is active.