This read-write enabled/disabled flag controls whether the PDU records to the PDU's internal event log for current draw on a branch circuit breaker climbing to a critical high level, close to the breaker's trip point. Enabling it lets an admin review the device's own event-log history after the fact, even without a monitoring server watching in real time. For example, when current draw on a branch circuit breaker climbing to a critical high level actually happens on this unit, an admin auditing the PDU's local event log during a post-incident review is exactly the effect this setting produces.