A read-only CwrCwConsecutiveSevErrSecond value giving the cumulative count of Codeword Consecutively Severely Errored Seconds detected since the link was last administratively brought up, at 1-minute granularity. Because CSES specifically captures sustained back-to-back severe errors, a rising count here points to outage-like conditions rather than isolated bad seconds scattered over time. For example, a link reporting significant p2mpSu1MinConsecSevErrSeconds but comparatively few plain SES would suggest the errors are occurring in a small number of longer bursts rather than being spread evenly across many separate seconds.