Rockwell-automation FactoryTalk Report Expert User Guide Manual do Utilizador descarregar pdf (Página 172)

Chapter 10 Glossary of Fields

172 Rockwell Automation Publication RPTEXP-UM001H-EN-P-June 2014

Min. Duration/Event Severity

The shortest event or state occurrence (for grouping rows). / The

numeric severity level assigned to the event (for detail rows).

MTBF

MTBF = Uptime ⁄ FaultCount

Mean Time Between Failure (MTBF) is the ratio of running time to

the total number of failures. It measures the average amount of time

when a piece of equipment was in a running state between failures.

MTBF is a derived field that contains aggregate functions and, as

such, can only be used in summary report objects and cannot have

aggregate functions applied.

MTTR

MTTR = FaultTime ⁄ FaultCount

Mean Time to Repair (MTTR) is the ratio of the time spent in a

failure state to the total number of failures. It measures the average

amount of time when a piece of equipment was in a failure state.

MTTR is a derived field that contains aggregate functions and, as

such, can only be used in summary report objects and cannot have

aggregate functions applied.

OEE %

The product of Uptime, Throughput, and Quality. The calculation

for this field is:

OEE % = Uptime x Throughput x Quality.

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Rockwell-automation FactoryTalk Report Expert User Guide Manual do Utilizador Página 172