Rockwell Automation FactoryTalk Metrics User Guide - Manual (Page 128)

Chapter 3 Collecting Performance Data
Metrics that you should evaluate for your organization. Each
approach has its own advantages and considerations:
• Running versus downtime. (page 128)
• User-defined downtime events. (page 129)
• Machine state. (page 130)
This measure of downtime is suitable for the organizations that
consider downtime to be "any time a machine is available to produce
parts, but is not actually running".
By default, an activity area is assumed to be always available and
always running; however, this default configuration does not allow
you to collect downtime for the activity area. To collect downtime,
you need to provide a method to determine the machine availability
and a running indicator from the control system.
To define the monitored availability of an activity area, use the
Monitored Availability tab in the Configure Performance
Parameters dialog box.
You can set there the available time to be collected from the control
system, or to be defined by a time pattern (or a shift schedule), and
modified by the Monitored Availability setting. You can also define
a data point or a formula from the control system that indicates
when the monitored machine is running.
For more information, see "Configuring Monitored Availability
(page 73)".
To report on the difference between the available time and running
time (i.e., the time when the machine was available but not
running), use the Downtime Seconds column in the PlantMetrics
Workcell History report data source.
Running Versus Downtime
128 Rockwell Automation Publication PLTMT-UM001M-EN-P-June 2014