Rockwell-automation FactoryTalk Metrics User Guide Manuel d'utilisateur Page 127

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Collecting Performance Data Chapter 3
supposed to?” and “What are they doing when they are not
running?” Downtime tracking can answer these questions for you.
The word “downtime” is frequently used, but may mean different
things to different people. All of the following are possible
definitions of downtime:
Any time the machine is not running.
Any on-shift time the machine is not running.
Any on-shift time when predefined conditions cause the
machine to stop (this excludes other conditions from
downtime).
Any on-shift time, except certain conditions (like blocked or
starved) when predefined conditions cause the machine to
stop.
Any time the machine is in a predefined fault condition.
Further, when someone says they want to see downtime reports,
they may want to see:
All the time, divided into categories like running and
downtime.
All the downtime.
The downtime divided into predefined categories.
The downtime divided into predefined categories with reason
codes entered by the operator.
The downtime by machine, shift, part, operator, etc.
It is important that you carefully consider the definition of
downtime and the reporting requirements of your organization,
before you start a downtime tracking project. In addition, there are
three distinct approaches to downtime tracking with FactoryTalk
Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014 127
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